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Dell OpenManage Server Administrator Version 6.2 User's Manual

1. Disconnected Available In this case the enclosure status is displayed in warning mode The Enclosures page displays all enclosure components EMMs Fans Physical Disks Power Supplies and Temperature to be in normal condition Select the Information Configuration subtab of the enclosure This page displays the Path Failure message to indicate that the enclosure has lost a communication path to the controller thereby indicating that the enclosure is no longer in redundant path mode For more information see Path Health Clearing the Redundant Path View Consider a case where you reboot your system and Storage Management displays the Logical Connector with a path failure message It is possible that you may have intentionally unplugged the second connector In this case the path failure message is not relevant Else there could be a fault in the connected cable or the cable may not be connected properly to the controller In both cases Storage Management displays that the system was in redundant path configuration before reboot and is no longer in this configuration If you are sure you do not want the redundant path mode clear the existing redundant path view using Clear Redundant Path View provided in the Change Controller Properties controller task Selecting this option clears the redundant path view and the connectors are represented on the user interface as Connector 0 and Connector 1 Related Topics 1 Log
2. Cancel Initialize Virtual Disk Enclosure Support Table A 58 Enclosure Support on the Non RAID Controllers Enclosure Support Non RAID SCSI Non RAID SAS Can an enclosure be attached to this controller yes No Enclosure and Backplane Features This section identifies the features supported by the enclosure or backplane 1 Enclosure and Backplane Tasks Enclosure and Backplane Support for Smart Thermal Shutdown For information on controller supported features see 1 Supported Features on the PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4 Di 4e Si 4e Di 4e DC CERC ATA100 4ch and 4 1M Controllers 1 Supported Features on the PERC 3 Si 3 Di CERC SATA1 5 2s and CERC SATA1 5 6ch Controllers 1 Supported Features on the PERC 5 E PERC 5 i PERC 6 E PERC 6 1 PERC 6 I Modular and CERC 6 1 Controllers 1 Supported Features on the SAS 5 iR SAS 6 iR and PERC H200 Controllers 1 Supported Features on the PERC 100 and S300 Controllers Enclosure and Backplane Tasks Table A 59 Enclosure Tasks Enclosure and Backplane PowerVault 20xS PowerVault 220S PowerVault PowerVault PowerVault Tasks and 21xS and 221S MD1000 Storage MD1120 MD1200 Storage Enable Alarm Ino Yes Disable Alarm Ino Yes Set Temperature Probe Values Yes Set Asset Data includes asset Yes tag and asset name Blink Enclosure Table A 60 Backplane Tasks Enclosur
3. Storage Management PERC BIOS Configuration Utility for the 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di and CERC ATA100 4ch Controllers Controller Adapter Virtual Disk Logical Drive Physical disk Physical Drive BIOS Terms and the PERC 3 Si 3 Di CERC SATA1 5 6ch and CERC SATA1 5 2s Controllers Table 15 2 Naming convention differences between Storage Management and PERC BIOS Container Configuration Utility CCU Storage Management PERC BIOS CCU for the 3 Si 3 Di CERC SATA1 5 6ch and CERC SATA1 5 2s Controllers Back to Contents Page Back to Contents Page Connectors Dell OpenManage Server Administrator Storage Management User s Guide Channel Redundancy and Thermal Shutdown Channel Redundancy on PERC 3 DC 3 QC 4 DC 4e DC 4 Di and 4e Di Controllers Creating a Channel redundant Virtual Disk Connector Health Connector Properties and Tasks Logical Connector Properties and Tasks A controller contains one or more connectors channels or ports to which you can attach disks A connector is externally accessible for attaching an enclosure with external disks to the system A connector may also be attached to the system s backplane for internal disks The controller s connectors are displayed by expanding the controller object in the tree view Channel Redundancy and Thermal Shutdown It is possible to create a virtual disk that uses physical disks tha
4. Virtual Disk Specification PERC PERC PERC PERC PERC PERC PERC PERC PERC CERC ATA PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4 DI 4e Si 4e DI 4e DC 100 4ch 4 1M Maximum Number of Virtual Disks 40 40 40 per Controller Minimum Virtual Disk Size Maximum Virtual Disk Size 2TB Maximum Number of Spans per Virtual Disk Maximum Number of Physical Disks 32 32 32 32 per Span Minimum Stripe Size Maximum Stripe Size 128k 128k 128k 128k 128k Maximum Number of Virtual Disks 16 16 per Disk Group T wW 128k 128k 128k 16 Maximum Number of Physical Disks that Can Be Concatenated N Maximum Number of Physical Disks 32 32 ina RAID O Maximum Physical Disks in a Maximum Number of Physical Disks ina RAID 5 Maximum Number of Physical Disks in a RAID 10 Maximum Number of Physical Disks in a RAID 50 Minimum Number of Physical Disks that Can Be Concatenated Minimum Number of Physical Disks in a RAID 0 Minimum Number of Physical Disks in a RAID 1 Minimum Number of Physical Disks in a RAID 5 Minimum Number of Physical Disks in a RAID 10 Minimum Number of Physical Disks in a RAID 50 Maximum number of physical disks in a RAID 6 Maximum number of physical disks in a RAID 60 Minimum number of physical disks in a RAID 6 Minimum number of physical disks in a RAID 60 Supported RAID Levels Table
5. If the disk is not part of a redundant virtual disk 1 Back up data from the virtual disk 2 Delete the virtual disk 3 Replace the disk that is receiving SMART alerts 4 Create a new virtual disk Make sure that the new virtual disk is the same size or larger than the original virtual disk For controller specific information on creating virtual disks see Virtual Disk Considerations for PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di 4e Si 4e Di CERC ATA100 4ch PERC 5 E PERC 5 i PERC 6 E and PERC 6 Controllers and Virtual Disk Considerations for PERC 3 Si 3 Di CERC SATA1 5 6ch and CERC SATA1 5 2s controllers 5 Restore the backed up data from the original virtual disk onto the newly created virtual disk Related I nformation Monitoring Disk Reliability on RAID Controllers Other Disk Procedures See the following sections 1 Replacing a Failed Disk 1 Recovering from Removing the Wrong Physical Disk Moving Physical and Virtual Disks from One System to Another 1 Troubleshooting Physical Disk Properties and Tasks Use this window to view information about physical disks and execute physical disk tasks Physical Disk Properties The following table describes properties that may be displayed for physical disks depending on the controller Property Definition Status Name State Capacity Certified Failure Predicted Thes
6. Remove Dead Segments Does my controller support this feature See Supported Features The Remove Dead Segments task recovers disk space that is currently unusable A dead or orphaned disk segment refers to an area of a physical disk that is unusable for any of the following reasons The dead segment is an area of the physical disk that is damaged The dead segment is included in a virtual disk but the virtual disk is no longer using this area of the physical disk The physical disk contains more than one virtual disk In this case disk space that is not included in one of the virtual disks may be unusable The dead segment resides on a physical disk that has been disconnected from and then reconnected to the controller Prepare to Remove Does my controller support this feature See Supported Features Use the Prepare to Remove task to spin down a physical disk so that it can safely be removed from an enclosure or backplane It is recommended that you perform this task before removing a disk to prevent data loss This task causes the lights on the disk to blink You can safely remove the disk under the following conditions Wait for about 30 seconds to allow the disk to spin down Wait until you notice the initial blink pattern has changed into a different pattern or the lights have stopped blinking A physical disk is no longer in Ready state after doing a Prepare to Remove Removing the physical disk from
7. To preview the import of foreign configuration Click Foreign Configuration Operations from the Controller Tasks drop down menu Click Execute to display the Foreign Configuration Preview screen To locate this task in Storage Management For SAS controllers with firmware version 6 1 1 Expand the Storage tree object to display the controller objects 2 Select a controller object 3 Select the Information Configuration subtab 4 Select Foreign Configuration Operations from the Controller Available Tasks drop down menu 5 Click Execute Importing Foreign Configurations Some controllers enable you to import a foreign configuration so that virtual disks are not lost after moving the physical disks To be imported the foreign configuration must contain a virtual disk that is in either Ready or Degraded state In other words all of the virtual disk data must be present but if the virtual disk is using a redundant RAID level the additional redundant data does not need to be present For example if the foreign configuration contains only one side of a mirror in a RAID 1 virtual disk then the virtual disk is in Degraded state and can be imported On the other hand if the foreign configuration contains only one physical disk that was originally configured as a RAID 5 using three physical disks then the RAID 5 virtual disk is failed and cannot be imported In addition to virtual disks a foreign configuration may consist of a physica
8. 4 Select Set Check Consistency Rate from the Available Tasks drop down menu 5 Click Execute You can also locate this task from the Change Controller Properties drop down menu For more information see Change Controller Properties Related I nformation 1 Check Consistency 1 Cancel Check Consistency Set Reconstruct Rate Does my controller support this feature See Supported Features The Set Reconstruct Rate task changes the amount of system resources dedicated to the reconstruct task The reconstruct task remakes the virtual disk after you have changed the RAID level or otherwise reconfigured the virtual disk The reconstruct rate configurable between 0 and 100 represents the percentage of the system resources dedicated to running the reconstruct task At 0 the reconstruct will have the lowest priority for the controller will take the most time to complete and will be the setting with the least impact to system performance A reconstruct rate of 0 does not mean that the reconstruct is stopped or paused At 100 the reconstruct will be the highest priority for the controller will minimize the reconstruct time and will be the setting with the most impact to system performance To change the controller s reconstruct rate 1 Type a numerical value in the New Reconstruct Rate text box The value must be within the 0 100 range 2 Click Apply Changes If you want to exit and cancel your changes cl
9. Warn The Learn cycle is past the default 90 days NOTE Warn is available only on SAS controllers with firmware version 6 1 and later When the battery is in Warn mode the status of the controller is displayed as degraded Next Learn This property displays the number of days and hours left before the controller firmware initiates the next Learn cycle Time Maximum This property displays the maximum number of days and hours that you can delay the battery Learn cycle The controller firmware Learn Delay automatically initiates the battery Learn cycle You cannot stop or pause the Learn cycle but you can delay it See Battery Delay Learn Cycle and Start Learn Cycle for more information Recharge This property displays the number of times the controller s battery has been recharged Count Max Recharge This property displays the maximum number of times the controller s battery can be recharged Count Battery Tasks Do the following to execute a drop down menu battery task 1 Expand the Storage tree object to display the controller objects 2 Expand a controller object 3 Select the Battery object 4 Select a task from the Available Tasks drop down menu 5 Click Execute Drop down Menu Battery Tasks Recondition Battery 1 Start Learn Cycle Battery Delay Learn Cycle Recondition Battery Does my controller support this feature See Supported Features Some con
10. Better read performance but slower write performance 1 Increased redundancy for protection of data Two disks per span are required for parity RAID 6 is more expensive in terms of disk space Related I nformation See the following 1 Organizing Data Storage for Availability and Performance 1 Comparing RAID Level and Concatenation Performance 1 Controller supported RAID Levels 1 Number of Physical Disks per Virtual Disk 1 Maximum Number of Virtual Disks per Controller RAID Level 50 Striping over RAID 5 sets RAID 50 is striping over more than one span of physical disks For example a RAID 5 disk group that is implemented with three physical disks and then continues on with a disk group of three more physical disks would be a RAID 50 It is possible to implement RAID 50 even when the hardware does not directly support it In this case you can implement more than one RAID 5 virtual disks and then convert the RAID 5 disks to dynamic disks You can then create a dynamic volume that is spanned across all RAID 5 virtual disks Figure 3 6 RAID 50 RAID 50 Characteristics Groups n s disks as one large virtual disk with a capacity of s n 1 disks where s is the number of spans and n is the number of disks within each span Redundant information parity is alternately stored on all disks of each RAID 5 span Better read performance but slower write performance Requires as much par
11. DC and 4e DC controllers If you are using a PERC 3 DC 4 DC or 4e DC controller in a cluster configuration you must shut down and power off the other systems in the cluster before creating or deleting the virtual disk The following procedure describes the sequence of actions required to create or delete a virtual disk from a cluster enabled controller For the purposes of this procedure the system on which you are creating or deleting the virtual disk is identified as system A and the other system in the cluster is identified as system B K NOTE When creating a virtual disk on a controller that is in a cluster configuration you must specify the maximum virtual disk size 1 Stop the clustering services on system B 2 Shut down and power off system B 3 Create or delete the virtual disk on system A For more information on creating and deleting virtual disks see o Considerations Before Creating Virtual Disks o Creating Virtual Disks o Virtual Disk Task Delete 4 Reboot system A 5 Restart system B Integrated Mirroring and the PERC 4 I M Controller The PERC 4 IM controller enables you to mirror a physical disk that resides internally in the server This feature can be used to mirror the system s boot drive from one physical disk to another ensuring that the system remains running in the event that one of the physical disks fails The PERC 4 IM controller firmware maintains the mirrored data on both physica
12. Ifa user has taken the disk offline then return the disk to Online status by executing the Online disk task Rescan the controller This action updates the status of storage objects attached to the controller If the error status was caused by deleting or initializing a virtual disk rescanning the controller should resolve this problem Investigate whether there are any cable enclosure or controller problems preventing the disk from communicating with the controller If you find a problem and resolve it you may need to rescan the controller to return the disk to Online or Ready status If the disk does not return to Online or Ready status reboot the system If the disk is damaged replace it See Replacing a Failed Disk for more information A Disk is Marked as Failed When Rebuilding in a Cluster Configuration When a system in a cluster attempts to rebuild a failed disk but the rebuild fails then another system takes over the rebuild In this situation you may notice that the rebuilt disk continues to be marked as failed on both systems even after the second system has rebuilt successfully To resolve this problem perform a rescan on both systems after the rebuild completes successfully A Disk on a PERC 4 Di Controller Does not Return Online after a Prepare to Remove When you do a Prepare to Remove command on a physical disk attached to a PERC 4 Di controller you may find that the disk does not display in the Storage Managem
13. The Create Virtual Disk wizard may round up the size of the virtual disk to avoid rendering a portion of the physical disk space unusable NOTE When creating a virtual disk on the CERC SATA1 5 2s controller or on a controller that is in a cluster configuration you must specify the maximum virtual disk size Select a stripe size from the Stripe Size drop down menu The stripe size refers to the amount of space that each stripe consumes on a single disk See 3 What Is RAID for more information 4 Select the read write and disk cache policy These selections can vary depending on the controller See RAID Controller Read Write Cache and Disk Cache Policy for more information NOTE Read write and cache policies are not supported on the CERC SATA1 5 2s controller There is limited support for write policy on controllers that do not have a battery See Write Policy for more information The cache policy is not supported on any controller that does not have a battery See RAID Controller Read Write Cache and Disk Cache Policy for more information 5 Click Continue to go to the next screen If you want to cancel the virtual disk click Exit Wizard If you want to return to the previous screen and change your selections click Go Back To Previous Page Create Virtual Disk Advanced Wizard Step 4 of 4 Does my controller support this feature See Supported Features This screen displays the virtual disk attri
14. termination type is unknown SCSI Rate This property displays the SCSI speed for a SCSI device Connector Tasks Rescan Connector Does my controller support this feature See Supported Features On a SCSI controller this task rescans the controller connectors to verify the currently connected devices or to recognize new devices that have been added to the connectors Performing a rescan on a connector is similar to performing a rescan on the controller For information on when you may want to do a rescan see Rescan to Update Storage Configuration Changes K NOTE Rescan is not supported on non RAID SCSI controllers You must reboot the system before Storage Management can see configuration changes on non RAID SCSI controllers Otherwise configuration changes are not reflected in the Storage Management graphical user interface GUI Do the following to rescan a controller connector 1 Expand the Storage tree object to display the controller objects 2 Expand a controller object 3 Select a Connector object 4 Select the Information Configuration subtab 5 Select Rescan from the Available Tasks drop down menu 6 Click Execute Connector Components For information on attached components see the following topic 1 Enclosure and Backplane Properties and Tasks Logical Connector Properties and Tasks Use this window to view information about the logical connector connector in redundant
15. 1 Replacing a Physical Disk Receiving SMART Alerts The following sections have related information Moving Physical and Virtual Disks from One System to Another 1 Recovering from Removing the Wrong Physical Disk 1 Protecting Your Virtual Disk with a Hot Spare How do I recover from removing the wrong physical disk See Recovering from Removing the Wrong Physical Disk for more information How do I know what firmware is installed The controller s properties information displays the firmware version that is installed on the controller From the Storage tree view object you can display the firmware version for all controllers attached to the system A controller s Information Configuration subtab also displays the firmware installed on that controller To display the firmware version of all controllers 1 Select the Storage object in the tree view 2 Click the Information Configuration subtab The Firmware Version column on the Information Configuration subtab displays the firmware version for all controllers attached to the system Related I nformation 1 Downloading Firmware and Cluster Controllers 1 Controller Properties and Tasks What controllers do have Each controller attached to the system is displayed under the Storage object in the tree view In addition the Storage object s Health and Information Configuration subtabs display information for each controller To
16. 1 disks where s is the number of spans and n is the number of disks within each span o Select RAID 60 to implement striping across more than one RAID 6 span RAID 60 Groups n s disks as one large virtual disk with a capacity of s n 2 disks where s is the number of spans and n is the number of disks within each span RAID 60 provides increased data protection and better read performance but slower write performance Select the Create Secure Virtual Disk check box to ensure only secured physical disks are used to create the virtual disk Click Continue to go to the next screen or Exit Wizard if you want to cancel To locate this task in Storage Management 1 Expand the Storage tree object to display the controller objects 2 Expand a controller object 3 Select the Virtual Disks object 4 Click Go To Create Virtual Disk Wizard 5 Click Go To Advanced Wizard Create Virtual Disk Advanced Wizard Step 2 of 4 Does my controller support this feature See Supported Features This screen enables you to select which disks will be used to create the virtual disk The items displayed on this screen depend on the selections you made in Create Virtual Disk Advanced Wizard Step 1 of 4 NOTE If a physical disk is receiving a SMART alert it cannot be used in a virtual disk For more information on SMART alerts see Monitoring Disk Reliability on RAID Controllers y NOTE For a controller that has more than on
17. Advisory Board RAB defines the specifications used to implement RAID Although the RAB defines the RAID levels commercial implementation of RAID levels by different vendors may vary from the actual RAID specifications An implementation used by a particular vendor may affect the read and write performance and the degree of data redundancy Hardware and Software RAID RAID can be implemented with either hardware or software A system using hardware RAID has a RAID controller that implements the RAID levels and processes data reads and writes to the physical disks When using software RAID provided by the operating system the operating system implements the RAID levels For this reason using software RAID by itself can slow system performance You can however use software RAID on top of hardware RAID volumes to provide better performance and variety in the configuration of RAID volumes For example you can mirror a pair of hardware RAID 5 volumes across two RAID controllers to provide RAID controller redundancy K NOTE Storage Management supports only hardware RAID RAI D Concepts RAID uses particular techniques for writing data to disks These techniques enable RAID to provide data redundancy or better performance These techniques include Mirroring Duplicating data from one physical disk to another physical disk Mirroring provides data redundancy by maintaining two copies of the same data on different physical disks If one of the
18. Asset Name Backplane Part Number SAS Address Split Bus Part Number Definition These icons represent the severity or health of the storage component See Storage Component Severity for more information NOTE If the enclosure is connected to the controller in redundant path mode see Redundant Path Configuration for more information the loss of connection to any one EMM may cause the enclosure status to be displayed as degraded This property displays the name of the enclosure or backplane This property displays the current status of the enclosure or backplane Possible values are Ready The enclosure or backplane is functioning normally Degraded The enclosure has encountered a failure and is operating in a degraded state The Degraded state does not apply to backplanes Failed The enclosure or backplane has encountered a failure and is no longer functioning This property displays the number of the connector to which the enclosure or backplane is attached This number matches the connector number on the controller hardware Depending on the controller type the connector can be either a SCSI channel or a SAS port This property displays the enclosure ID assigned to the enclosure by Storage Management Storage Management numbers the enclosures attached to the controller starting with zero This number is the same as the enclosure ID number reported by the omreport Command
19. Blink and Unblink Physical Disk Clear Physical Disk and Cancel Clear Remove Dead Segments Revertible Hot Spare Prepare to Remove Instant Secure Erase Physical disks reside within an enclosure or are attached to the controller On a RAID controller physical disks are used to create virtual disks Add a New Disk to Your System 1 Install or attach the new physical disk or disks Refer to the documentation that came with the disk for more information 2 Do one of the following depending on the controller technology See RAID Controller Technology SCSI SATA ATA and SAS for more information For SCSI SATA and ATA Controllers a Select the controller to which the disk is attached and click the Information Configuration tab b Execute the Rescan task The new disk should be displayed in the tree view after the rescan If the new disk is not displayed restart the computer For SAS Controllers a Check the Alert Log for an alert verifying that the system has identified the new disk You may receive alert 2052 or 2294 For information on Alert Messages see the Dell OpenManage Server Administrator Messages Reference Guide on the Dell Support website at support dell com manuals b Refresh the display by clicking Refresh or by changing screens K NOTE Clicking the Refresh button in the right pane refreshes only the right pane To view the new physical disk in the left pane tree view click the system name disp
20. Controller It is recommended that you only use RAID 10 3 Complete Create Virtual Disk Advanced Wizard Step 2 of 4 In this step you select the channels and the disks to be used by the virtual disk The selections you make determine whether or not the virtual disk is channel redundant There are specific RAID level and configuration requirements for implementing channel redundancy You must select the same number of physical disks on each channel that you use See Number of Physical Disks per Virtual Disk for information on the number of physical disks that can be used for different RAID levels See Controller supported RAID Levels for information on controller specific implementations of the RAID levels Depending on the controller type use one of the following procedures when completing Create Virtual Disk Advanced Wizard Step 2 of 4 o Physical disk Selection for Channel redundant Virtual Disks on PERC 3 DC 3 QC 4 DC 4e DC 4 Di and 4e Di Controllers o Physical disk Selection for Channel redundant Virtual Disks on a PERC 3 Di Controller Physical disk Selection for Channel redundant Virtual Disks on PERC 3 DC 3 QC 4 DC 4e DC 4 Di and 4e Di Controllers The following sections describe creating a channel redundant virtual disk using RAID 10 or RAID 50 on a PERC 3 DC 3 QC 4 DC 4e DC 4 Di or 4e Di controller RAID 10 a Select one physical disk on each of two channels In other words eac
21. Disk that is Part of a Nonredundant Virtual Disk 1 Replacing a Failed Physical Disk in a RAID 1 on a CERC SATA1 5 2s Replacing a Failed Disk that is Part of a Redundant Virtual Disk If the failed disk is part of a redundant virtual disk then the disk failure should not result in data loss You should replace the failed disk immediately however as additional disk failures can cause data loss If the redundant virtual disk has a hot spare assigned to it then the data from the failed disk is rebuilt onto the hot spare After the rebuild the former hot spare functions as a regular physical disk and the virtual disk is left without a hot spare In this case you should replace the failed disk and make the replacement disk a hot spare NOTE If the redundant virtual disk does not have a hot spare assigned to it then replace the failed disk using the procedure described in Replacing a Physical Disk Receiving SMART Alerts Replacing the Disk 1 Remove the failed disk 2 Insert a new disk Make sure that the new disk is the same size or larger as the disk you are replacing On some controllers you may not be able to use the additional disk space if you insert a larger disk See Virtual Disk Considerations for PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di 4e Si 4e Di CERC ATA100 4ch PERC 5 E PERC 5 i PERC 6 E and PERC 6 Controllers for more information A rebuild is automatically initiated because the virtual disk
22. Features The Reconfigure task enables you to change the virtual disk configuration Using this task you can change the RAID level and increase the virtual disk size by adding physical disks On some controllers you can also remove physical disks Before continuing with the virtual disk reconfiguration you should be familiar with the information in Starting and Target RAID Levels for Virtual Disk Reconfiguration and Capacity Expansion and Choosing RAID Levels and Concatenation NOTE You cannot reconfigure a virtual disk on a controller that is operating in cluster mode NOTE On the PERC 5 E and PERC 6 E controllers you can create no more than 64 virtual disks After you have reached this limit you will no longer be able to reconfigure any of the virtual disks on the controller NOTE On Linux if you do a reconfigure on the same controller on which the operating system resides you may experience extremely slow system performance until the reconfigure is complete NOTE You may want to review Virtual Disk Considerations for PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di 4e Si 4e Di CERC ATA100 4ch PERC 5 E PERC 5 i PERC 6 E and PERC 6 Controllers This section contains considerations that also apply to reconfiguring a virtual disk on these controllers To Reconfigure a Virtual Disk Step 1 of 3 1 Select the physical disks that you want to include in the virtual disk You can expand the virtual disk s capaci
23. For information on Command Line Interface see the Dell OpenManage Server Administrator Command Line Interface User s Guide on the Dell Support website at support dell com manuals This property displays the SCSI ID of the backplane internal to the server or the enclosure to which the controller connector is attached The value is usually 6 This property displays the mode in which the enclosure is operating Possible values are Joined Indicates that the enclosure is operating in joined bus mode Split Indicates that the enclosure is operating in split bus mode Unified Indicates that enclosure is operating in unified mode Clustered Indicates that the enclosure is operating in cluster mode Clustered mode is only available on cluster enabled RAID controllers See Cluster enabled RAID Controllers for more information For more information on joined split and cluster modes see the enclosure hardware documentation For information on how to cable the enclosure to accommodate these different modes see the enclosure hardware documentation When toggling the bus configuration switch on a PowerVault 220S or PowerVault 221S enclosure the enclosure should be powered off See Changing the Mode on PowerVault 220S and PowerVault 221S Enclosures for more information Older PowerVault 200S enclosures with a version 1 8 kernel that only have one EMM may display Split Bus mode and not Joined Bus mode Joined Bus or Cluster
24. PERC 6 E 1 PERC 6 1 Integrated and PERC 6 Adapter 1 PERC 6 Modular 1 CERC 6 1 controller SAS 6 iR controller PERC S100 and S300 PERC H200 Adapter PERC H200 Integrated and PERC H200 Modular PERC H800 Adapter PERC H700 Adapter PERC H700 Integrated and PERC H700 Modular NOTE Integrated mirroring on the PERC 4 IM controller enables you to mirror a physical disk that resides internally in the server You can implement the integrated mirror using the PERC 4 IM BIOS When implemented Storage Management recognizes the integrated mirror as a virtual disk You cannot however use Storage Management to create a virtual disk on the PERC 4 IM controller Storage Management supports other functions provided by the PERC 4 IM controller See Integrated Mirroring and the PERC 4 IM Controller for more information Supported Non RAID Controllers Storage Management supports the following non RAID controllers Ultra SCSI Ultra2 SCSI Ultra160 SCSI LSI 1020 LSI 1030 and LSI PCI e U320 1 SAS 5 i Integrated 1 SAS 5 E 1 SAS 6Gbps Adapter Supported Enclosures This release of Storage Management supports the following enclosures 1 Dell PowerVault 20xS and 21xS storage systems Dell PowerVault 220S and 221S storage systems Dell PowerVault MD1000 and MD1120 storage system 1 Dell PowerVault MD1200 and MD1220 storage system Support for Disk and Volume Management Storage Management does not provide disk
25. Status Rollup Physical Disks in a Virtual Disk are Failed or Removed Table B 2 Health Status Rollup Physical Disks in a Virtual Disk are Failed or Removed Enclosures Not I ncluded Storage Subsystem Controller Battery Connector Physical Disk s Firmware Virtual Disk s Driver Component Status Health Rollup Health Status Rollup Physical Disks in a Virtual Disk are Unsupported Partially or Permanently Degraded Table B 3 Health Status Rollup Physical Disks in a Virtual Disk are Unsupported Partially or Permanently Degraded Enclosures Not Included Component Status Health Rollup Health Status Rollup All Physical Disks in a Virtual Disk are in Foreign State Table B 4 Health Status Rollup All Physical Disks in a Virtual Disk are in Foreign State Enclosures Not Included Component Status Health Rollup Health Status Rollup Some Physical Disks in a Virtual Disk are in Foreign State Table B 5 Health Status Rollup Some Physical Disks in a Virtual Disk are in Foreign State Enclosures Not Included Component Status Health Rollup Health Status Rollup Virtual Disk is Degraded Physical Disks are Failed or Rebuilding Table B 6 Health Status Rollup Virtual Disk is Degraded Physical Disks are Failed or Rebuilding Enclosures Not I ncluded Storage Subsystem Cont
26. Storage Management does not support the creation of volumes However you can view volumes and use drives from these volumes for creation of new virtual disks or Online Capacity Expansion OCE of existing virtual disks provided free space is available Storage Management allows Rename and Delete operations on such volumes For more information see Choosing RAID Levels and Concatenation Choosing RAID Levels and Concatenation You can use RAID or concatenation to control data storage on multiple disks Each RAID level or concatenation has different performance and data protection characteristics The following sub sections provide specific information on how each RAID level or concatenation store data as well as their performance and protection characteristics 1 Concatenation 1 RAID Level 0 Striping 1 RAID Level 1 Mirroring 1 RAID Level 5 Striping with distributed parity 1 RAID Level 6 Striping with additional distributed parity RAID Level 50 Striping over RAID 5 sets 1 RAID Level 60 Striping over RAID 6 sets 1 RAID Level 10 Striping over mirror sets RAID Level 1 Concatenated Concatenated mirror 1 Comparing RAID Level and Concatenation Performance 1 No RAID Concatenation In Storage Management concatenation refers to storing data on either one physical disk or on disk space that spans multiple physical disks When spanning more than one disk co
27. Tasks Does my enclosure support this feature See Supported Features Use this window to view information about the enclosure s temperature probes Temperature Probe Properties and Tasks Property Definition Status These icons represent the severity or health of the storage component See Storage Component Severity for more information 2 NOTE On some enclosures Storage Management may experience a short delay before displaying the current enclosure temperature and temperature probe status For more information see Storage Management May Delay Before Updating Temperature Probe Status a Name This property displays the name of the temperature probe State This property displays the current status of the temperature probe Ready The temperature probe is functioning normally Degraded The temperature probe has encountered a failure and is operating in a degraded state Failed The temperature probe has encountered a failure and is no longer functioning Storage Management may also be unable to communicate with the enclosure using SES commands The Failed state is displayed when the enclosure does not respond to a status query from Storage Management for any reason For example disconnecting the cable would cause this state to be displayed Minimum Warning Threshold Exceeded The enclosure s temperature has dropped below the minimum warning threshold See Set Temperature Probe Values for more
28. This property displays the speed of data transfer that the disk negotiated while spinning up and upon initial communication with the controller This speed is dependent on the speed of the disk the capable speed of the controller the current speed of the controller on that connector and the speed of the Enclosure Management Module EMM on the enclosure Capable Speed This property displays the highest possible speed with which the device can transfer data Manufacture This property displays the day of the month on which the physical disk was manufactured Day Manufacture This property displays the week of the year during which the physical disk was manufactured Week Manufacture This property displays the year in which the physical disk was manufactured Year SAS Address This property displays the SAS address of the physical disk The SAS address is unique to each SAS disk After Import This property displays what the status of the physical disk would be after the foreign configuration has been imported Possible values Status are Foreign Online Offline Replaced Rebuild Related I nformation Foreign Configuration Operations Set Background Initialization Rate Does my controller support this feature See Supported Features The Set Background Initialization Rate task changes the amount of system resources dedicated to the background initialization task See Background Initialization on PER
29. Unassign Global Hot Spare Prepare to Remove Offline Online Initialize Rebuild Cancel Rebuild Remove Dead Disk Segments Format Disk Clear Cancel Clear Virtual Disk Tasks Table A 5 Virtual Disk Tasks Supported by the PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4 Di 4e Si 4e Di 4e DC CERC ATA100 4ch and 4 IM Controllers Virtual Disk Task Name PERC PERC PERC PERC PERC PERC PERC PERC PERC CERC ATA 3 SC 3 DC 3 QC 4 SC 4 DC 4 DI 4e SI 4e DI 4e DC 100 4ch Assign and Unassign Dedicated Hot Spare Create Virtual Disk Yes Create Virtual Disk Advanced Yes Wizard Create Virtual Disk Express Yes Wizard Blink Unblink Reconfigure Change Policy Split Mirror Ino e Unmirror no Delete Last Virtual Disk Yes Delete any Virtual Disk Yes Check Consistency Yes Cancel Check Consistency Yes Pause Check Consistency Resume Check Consistency Cancel Background Yes Initialization BGI Format Virtual Disk Cancel Format Virtual Disk Restore Dead Disk Segments Initialize Virtual Disk Yes Fast Initialize Virtual Disk Slow Initialize Virtual Disk Cancel Initialize Virtual Disk Yes Virtual Disk Specifications Table A 6 Virtual Disk Specifications for the PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4 Di 4e Si 4e Di 4e DC CERC ATA100 4ch and 4 1M Controllers
30. Unsupported Partially or e Permanently Degraded Health Status Rollup One Enclosure EMM is Failed Health Status Rollup All Physical Disks in a Virtual Disk are in Foreign State Health Status Rollup One Enclosure Temperature Probe is Failed Health Status Rollup Some Physical Disks in a Virtual Disk are in Foreign State Health Status Rollup Lost Bath Power Connections to the Health Status Ro lup Virtual Disk is Degraded Physical Disks are Failed or 7 i Rebuildin Health Status Rollup One or More Physical Disks are Failed Health Status Rollup Virtual Disk is Failed Health Status Rollup Physical Disk is Rebuilding Health Status Rollup Unsupported Firmware Version The tables in this appendix indicate how the status of lower level storage components is rolled up into the combined status displayed for the controller or other higher level component The examples provided by these tables do not cover all scenarios but they do indicate how status is rolled up when a particular component is in a healthy degraded or failed state Health Status Rollup Battery is Charging or Dead Table B 1 Health Status Rollup Battery is Charging or Dead Enclosures Not Included Storage Subsystem Controller Battery Connector Physical Disk s Firmware Virtual Disk s Driver Component Status Health Rollup Health
31. Virtual Disk Reconfiguration and Capacity Expansion 2 Locate the controller on which the virtual disk resides in the tree view Expand the controller object until the Virtual Disks object is displayed 3 Select the Reconfigure task from the virtual disk s drop down menu and click Execute 4 Complete the Reconfigure task using the Reconfigure wizard See Virtual Disk Task Reconfigure Step 2 of 3 for more information Starting and Target RAID Levels for Virtual Disk Reconfiguration and Capacity Expansion After you have created a virtual disk the possibilities for reconfiguring the virtual disk depend on the controller RAID level and available physical disks The following table describes the possible scenarios for reconfiguring a virtual dis Concatenation Table 11 1 Virtual Disk Reconfiguration and Capacity Expansion Controller PERC 3 SC 3 DC 3 QC 4 SC PERC 4 DC PERC 4e DC 4 Di 4e Si PERC 4e Di CERC ATA100 4ch PERC 5 E and PERC 5 i PERC 3 SC 3 DC 3 QC 4 SC PERC 4 DC PERC 4e DC 4 Di 4e Si PERC 4e Di CERC ATA100 4ch PERC 5 E and PERC 5 i PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di 4e Si PERC 4e Di CERC ATA100 4ch PERC 5 E and PERC 5 i PERC 3 SC 3 DC 3 QC 4 SC PERC 4 DC PERC 4e DC 4 Di 4e Si PERC 4e Di CERC ATA100 4ch PERC 5 E and PERC 5 i Starting RAID Level RAID 0 RAID 0 on a single disk Conc
32. a virtual disk while it is in Resynching state will cause the virtual disk to be in a Failed Redundancy state See Considerations for Concatenated to RAID 1 Reconfiguration on PERC 3 Si 3 Di and CERC SATA1 5 6ch Controllers for more information Resume Check Consistency Does my controller support this feature See Supported Features Use the Resume Check Consistency task to resume a check consistency after it has been paused Blink and Unblink Virtual Disk Does my controller support this feature See Supported Features The Blink and Unblink tasks blink or unblink the lights on the physical disks included in the virtual disk See Blink and Unblink Virtual Disk for more information Rename Does my controller support this feature See Supported Features Use the Rename task to change the virtual disk s name See Virtual Disk Task Rename for more information K NOTE On the CERC SATA1 5 2s controller you cannot change the default name of a concatenated virtual disk NOTE Renaming a virtual disk generates alert 2159 On the PERC 3 Si 3 Di CERC SATA1 5 6ch and CERC SATA1 5 2s controllers alert 2159 displays the new virtual disk name On the PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di 4 IM 4e Si 4e Di and CERC ATA100 4ch controllers alert 2159 displays the original virtual disk name Cancel Rebuild Does my controller support this feature See Supported Features Use the Canc
33. and RAID 50 virtual disks from partial physical disks You will therefore not encounter this situation if you are using Storage Management to create your virtual disks If however the RAID 10 or 50 virtual disk was created using another application and if it does contain partial physical disks then you will not be able to assign a dedicated hot spare to the virtual disk Considerations for Multiple Dedicated Hot Spares From Storage Management version 3 1 onwards Storage Management enables you to assign more than one dedicated hot spare to a virtual disk K NOTE This feature is applicable only on PERC 5 and PERC 6 family of controllers Physical Disk State Alert Messages and Hot Spares on PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di 4e Si 4e Di and CERC ATA100 4ch Controllers If you have a hot spare assigned to a virtual disk and a physical disk in the virtual disk fails the failed physical disk may change from Online state to Ready state without displaying a Failed state This occurs when the hot spare is activated before the physical disk is able to report the Failed state Because the Failed state is not reported the Device failed physical disk event 2048 is not generated When the hot spare is activated the hot spare displays the Rebuilding state If you review the event log and identify a rebuilding event such as 2064 or 2065 you can assume that a physical disk has failed For information on Alert Messages se
34. asset tag and asset name See Set Asset Data for more information Blink Does my enclosure support this feature See Supported Features Use the Blink task to blink the light emitting diodes LEDs on the enclosure You may want to use this task to locate an enclosure The LEDs on the enclosure may display different colors and blinking patterns Refer to the enclosure hardware documentation for more information on what the blink colors and patterns indicate Set Temperature Probe Value Does my enclosure support this feature See Supported Features Use the Set Temperature Probe Values task to specify the Warning and Failure thresholds for the enclosure s temperature probes See Set Temperature Probe Values for more information Identifying an Open Connector for the Enclosure Does my controller support this feature See Supported Features If you have not yet attached the enclosure to an open connector you may need to identify a connector on the controller that can be used for this purpose To identify an open connector 1 Expand the Storage Management tree view until the controller object is expanded When the controller object is expanded the tree view displays the controller s connectors These connectors are numbered starting from zero 2 Identify a connector that is not attached to storage If the connector is already attached to storage then the Connector object can be expanded to display an enclosure or bac
35. cannot be rebuilt Rebuilding a failed physical disk in this situation requires deleting the nonredundant virtual disk Virtual Disk Considerations for PERC 3 Si 3 Di CERC SATA1 5 6ch and CERC SATA1 5 2s controllers When creating a virtual disk on a PERC 3 Si 3 Di CERC SATA1 5 6ch or CERC SATA1 5 2s controller the physical disk selection has implications for how effectively a hot spare can rebuild the virtual disk See Understanding Hot Spares and Considerations for Hot Spares on PERC 3 Si 3 Di CERC SATA1 5 6ch 100 and S300 Controllers for more information For related information see Considerations for PERC 3 Si 3 Di CERC SATA1 5 6ch and CERC SATA1 5 2s Controllers When Physical Disks are Shared by Redundant and Nonredundant Virtual Disks Virtual Disk Considerations for PERC S100 and S300 Controllers The following considerations apply when creating virtual disks Space allocation When you create a new virtual disk the PERC S100 and S300 controllers allocate the largest area of free space on the physical disks to the new virtual disk Rebuilding data If a failed physical disk is used by both redundant and non redundant virtual disks only the redundant virtual disks are rebuilt For information on controller limitations see Number of Physical Disks per Virtual Disk Exceptions to One Physical Disk Limitation for Concatenated Virtual Disks on PERC 3 Si 3 Di CERC SATA1 5 6ch and CE
36. controller To exit without clearing the foreign configuration click Cancel To locate this task in Storage Management For SAS controllers with firmware versions 6 1 and later 1 Expand the Storage tree object to display the controller objects 2 Select a controller object 3 Select the Information Configuration subtab 4 Select Foreign Configuration Operations from the Controller Available Tasks drop down menu 5 Click Execute 6 On the Foreign Configuration Preview page click Clear For controllers with firmware version 6 0 and earlier 1 Expand the Storage tree object to display the controller objects 2 Select a controller object 3 Select the Information Configuration subtab 4 Select Clear Foreign Configuration from the Controller tasks Related I nformation Foreign Configuration Operations 1 Importing Foreign Configurations 1 Lmporting Recovering Foreign Configurations Physical Disks in Foreign Virtual Disks The Physical Disks in Foreign Virtual Disks page displays the physical disks and the dedicated hot spare if any included in the foreign configuration The following table describes properties for physical disks in the foreign configuration Definition These icons represent the severity or health of the storage component Property Status Normal OK Warning Non critical Critical Fatal See Storage Component Seve
37. disk reconfiguration To Reconfigure a Virtual Disk Step 3 of 3 1 Review your changes The New Virtual Disk Configuration table displays the changes you have made to the virtual disk The Previous Virtual Disk Configuration displays the original virtual disk prior to reconfiguration 2 Click Finish to complete the virtual disk reconfiguration If you want to exit without changing the original virtual disk click Exit Wizard K NOTE On some controllers performing a Rescan while a reconfiguration is in progress will cause the virtual disk configuration and the physical disk state to display incorrectly For example changes to the virtual disk s RAID level may not be displayed and the state of physical disks that were added to the virtual disk may display as Ready instead of Online Considerations for Concatenated to RAID 1 Reconfiguration on PERC 3 Si 3 Di and CERC SATA1 5 6ch Controllers When reconfiguring a concatenated virtual disk to a RAID 1 on a PERC 3 Si 3 Di or CERC SATA1 5 6ch controller the reconfigured virtual disk may display the Resynching state When reconfiguring from a concatenated virtual disk to a RAID 1 data is copied from the single concatenated disk to the RAID 1 mirror The controller perceives this operation as similar to resynching a mirror and therefore may display the Resynching state Performing a controller rescan during the virtual disk reconfiguration may also cause the virtual disk to display a Resynch
38. disks in the mirror fails the system can continue to operate using the unaffected disk Both sides of the mirror contain the same data at all times Either side of the mirror can act as the operational side A mirrored RAID disk group is comparable in performance to a RAID 5 disk group in read operations but faster in write operations Striping Disk striping writes data across all physical disks in a virtual disk Each stripe consists of consecutive virtual disk data addresses that are mapped in fixed size units to each physical disk in the virtual disk using a sequential pattern For example if the virtual disk includes five physical disks the stripe writes data to physical disks one through five without repeating any of the physical disks The amount of space consumed by a stripe is the same on each physical disk The portion of a stripe that resides on a physical disk is a stripe element Striping by itself does not provide data redundancy Striping in combination with parity does provide data redundancy Stripe size The total disk space consumed by a stripe not including a parity disk For example consider a stripe that contains 64KB of disk space and has 16KB of data residing on each disk in the stripe In this case the stripe size is 64KB and the stripe element size is 16KB Stripe element A stripe element is the portion of a stripe that resides on a single physical disk Stripe element size The amount of disk space consu
39. e un e wo Clear Foreign Configuration Import Foreign Configuration Import Recover Foreign Configuration Set Patrol Read Mode Start Patrol Read Stop Patrol Read Battery Tasks Table A 11 Battery Tasks Supported by the PERC 3 Si 3 Di CERC SATA1 5 2s and CERC SATA1 5 6ch Controllers Battery Task Name PERC 3 Si PERC 3 Di CERC SATA 1 5 2s CERC SATA 1 5 6ch Connector Tasks Table A 12 Connector Tasks Supported by the PERC 3 Si 3 Di CERC SATA1 5 2s and CERC SATA1 5 6ch Controllers Connector Task Name PERC 3 SI PERC 3 DI CERC SATA 2S CERC SATA 6ch Physical Disk Tasks Table A 13 Physical Disk Tasks Supported by the PERC 3 Si 3 Di CERC SATA1 5 2s and CERC SATA1 5 6ch Controllers Physical Disk Task Name PERC TE SI PERC 3 DI CERC SATA 2S CERC SATA 6ch Blink Unblink Prepare to Remove Offline Online Initialize Rebuild Cancel Rebuild Remove Dead Disk Segments Format Disk Clear Cancel Clear Virtual Disk Tasks Table A 14 Virtual Disk Tasks Supported by the PERC 3 Si 3 Di CERC SATA1 5 2s and CERC SATA1 5 6ch Controllers Virtual Disk Task Name PERC 3 SI PERC 3 DI CERC SATA 2S CERC SATA 6ch Assign and Unassign Dedicated Hot Spare Yes Ino Yes Create Virtual Disk Yes Yes Yes Create Virtua
40. hot spares are displayed in the Disks currently configured as dedicated hot spare table 2 Click Apply Changes when ready To unassign a dedicated hot spare 1 Click the disk in the Disks currently configured as dedicated hot spare table to unassign it On some controllers more than one disk can be selected Clicking the disk removes the disk from the Disks currently configured as dedicated hot spare table and returns it to the Connector channel or port table 2 Click Apply Changes when ready To locate this task in Storage Management 1 Expand the Storage tree object to display the controller objects 2 Expand a controller object 3 Select the Virtual Disks object 4 Select Assign Dedicated Hot Spare or Unassign Dedicated Hot Spare from the Available Tasks drop down menu 5 Click Execute Virtual Disk Task Replace Member Disk Step 1 of 2 K NOTE This feature is supported only on SAS and SATA controllers with firmware versions 6 1 and later Does my controller support this feature See Supported Features You can copy data from a physical disk which is a member of a virtual disk to another physical disk by providing a Replace Member Configuration option You can initiate multiple copies of data from different array groups The source physical disk should be part of a virtual disk and in the Online state Also the virtual disk should not be fully degraded K NOTE You must also enable the Revertible
41. i PERC 6 E PERC 6 1 PERC 6 I Modular and CERC 6 Controllers This section identifies the controller supported features and whether or not an enclosure can be attached to the controller 1 Controller Tasks Battery Tasks 1 Connector Tasks Physical Disk Tasks Virtual Disk Tasks 1 Virtual Disk Specifications 1 Supported RAID Levels Read Write Cache and Disk Cache Policy 1 Enclosure Support For enclosure supported tasks see Enclosure and Backplane Features Controller Tasks Table A 19 Controller Tasks Supported on the PERC 5 E PERC 5 i PERC 6 E PERC 6 1 PERC 6 I Modular and CERC 6 I Controllers Controller Task Name PERC 5 E PERC 5 i PERC 6 E PERC 6 1 Yes Enable Alarm Disable Alarm Quiet Alarm Test Alarm Reset configuration Set Rebuild Rate pes tors E T res he ves dN a e e E Set Background Initialization Rate Yes Yes Set Check Consistency Rate Yes Rescan Controller Create Virtual Disk Export Log File Clear Foreign Configuration Ye Ye Import Recover Foreign Configuration Set Patrol Read Mode Start Patrol Read Stop Patrol Read Replace Member Foreign Configuration Import Preview of Foreign Configuration Hot plug of Enclosures Change Controller Properties Intelligent Mirroring Redundant Path Configuration Disk Cache Policy Managing Preserved Cache Battery T
42. information Cancel Check Consistency Does my controller support this feature See Supported Features Use the Cancel Check Consistency task to stop a check consistency operation that is in progress K NOTE On the PERC 3 Si 3 Di and CERC SATA1 5 6ch controllers reconfiguring a concatenated virtual disk to a RAID 1 may cause the virtual disk to be in Resynching state Performing a Pause Check Consistency or a Cancel Check Consistency on a virtual disk while it is in Resynching state will cause the virtual disk to be in a Failed Redundancy state See Considerations for Concatenated to RAID 1 Reconfiguration on PERC 3 Si 3 Di and CERC SATA1 5 6ch Controllers for more information Pause Check Consistency Does my controller support this feature See Supported Features Use the Pause Check Consistency task to pause a check consistency while it is in progress K NOTE The Pause Check Consistency task updates the virtual disk State property to Resynching Paused immediately The Progress property may continue to increment for up to three seconds This time delay occurs because the polling task may take up to three seconds to query the task information and update the display K NOTE On the PERC 3 Si 3 Di and CERC SATA1 5 6ch controllers reconfiguring a concatenated virtual disk to a RAID 1 may cause the virtual disk to be in Resynching state Performing a Pause Check Consistency or a Cancel Check Consistency on
43. is having trouble with read and write operations to a particular virtual disk or non RAID physical disk if the system hangs for example then make sure that the cables attached to the corresponding enclosure or backplane are secure If the connection is secure but the problem persists you may need to replace a cable See also Isolate Hardware Problems On SAS controllers you should verify that the cable configuration is valid Refer to the SAS hardware documentation for valid cable configurations If the cable configuration is invalid you may receive alerts 2182 or 2356 For information on Alert Messages see the Dell OpenManage Server Administrator Messages Reference Guide on the Dell Support website at support dell com manuals System Requirements Make sure that the system meets all system requirements In particular verify that the correct levels of firmware and drivers are installed on the system For more information on drivers and firmware see Drivers and Firmware Drivers and Firmware Storage Management is tested with the supported controller firmware and drivers In order to function properly the controller must have the minimum required version of the firmware and drivers installed The most current versions can be obtained from the Dell Support website at support dell com K NOTE You can verify which firmware and drivers are installed by selecting the Storage object in the tree view and clicking the Information Con
44. is redundant Assigning a Hot Spare If a hot spare was already assigned to the virtual disk then data from the failed disk may already be rebuilt onto the hot spare In this case you need to assign a new hot spare See Assign and Unassign Dedicated Hot Spare and Assign and Unassign Global Hot Spare for more information Replacing a Failed Physical Disk that is Part of a Nonredundant Virtual Disk If the failed physical disk is part of a nonredundant virtual disk such as RAID 0 then the failure of a single physical disk will cause the entire virtual disk to fail To proceed you need to verify when your last backup was and if there is any new data that has been written to the virtual disk since that time If you have backed up recently and there is no new data on the disks that would be missed you can restore from backup NOTE If the failed disk is attached to a PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di or CERC ATA100 4ch controller you can attempt to recover data from the disk by using the procedure described in Using the Physical Disk Online Command on Select Controllers before continuing with the following procedure Do the following 1 Delete the virtual disk which is currently in a failed state 2 Remove the failed physical disk 3 Insert a new physical disk 4 Create a new virtual disk 5 Restore from backup Using the Physical Disk Online Command on Select Controllers Does my controller support t
45. limitations then the Tasks drop down menu displays No Task Available Physical Disk Drop down Menu Tasks 1 Blink and Unblink Physical Disk 1 Remove Dead Segments 1 Assign and Unassign Global Hot Spare Prepare to Remove 1 Online and Offline 1 Initialize 1 Rebuild 1 Cancel Rebuild Clear Physical Disk and Cancel Clear Revertible Hot Spare 1 Instant Secure Erase Blink and Unblink Physical Disk Does my controller support this feature See Supported Features The Blink task allows you to find a disk within an enclosure by blinking one of the light emitting diodes LEDs on the disk You may want to use this task to locate a failed disk On most controllers the Blink task automatically cancels after a short duration such as 30 or 60 seconds If you need to cancel the Blink task or if the physical disk continues to blink indefinitely use the Unblink task 74 NOTE The Blink and Unblink tasks are only supported for hotswap physical disks disks that reside in a carrier When using an Ultra SCSI Ultra2 SCSI Ultra160 SCSI LSI 1020 LSI 1030 or LSI PCI e U320 controller the Blink and Unblink tasks apply to physical disks contained in carriers that can be inserted into a server or an enclosure If the physical disk is not contained in a carrier but is instead designed to be connected with a SCSI cable typically a ribbon cable then the Blink and Unblink tasks are disabled
46. modifications that you have implemented In addition you should investigate the capacity of your peripheral devices to support a virtual disk that is larger than 1TB See your operating system and device documentation for more information Number of Physical Disks per Virtual Disk There are limitations on the number of physical disks that can be included in the virtual disk These limitations depend on the controller When creating a virtual disk controllers support a certain number of stripes and spans methods for combining the storage on physical disks Because the number of total stripes and spans is limited the number of physical disks that can be used is also limited The limitations on stripes and spans affect the possibilities for concatenation and RAID levels as follows Maximum number of spans affects concatenation RAID 10 RAID 50 and RAID 60 Maximum number of stripes affects RAID 0 RAID 5 RAID 50 RAID 6 and RAID 60 1 Number of physical disks in a mirror is always 2 This affects RAID 1 and RAID 10 In the case of RAID 50 and RAID 60 you can use a greater number of physical disks than is possible for the other RAID levels RAID 10 on a SAS controller with firmware version 6 1 can use a maximum of 256 physical disks However the number of connectors on the controller imposes limitations on how many physical disks can be included in a virtual disk when using RAID 10 RAID 50 or RAID 60 This is because only a limited number o
47. parity is alternately stored on all disks 1 When a disk fails the virtual disk still works but it is operating in a degraded state The data is reconstructed from the surviving disks Better read performance but slower write performance Redundancy for protection of data Related I nformation See the following 1 Organizing Data Storage for Availability and Performance 1 Comparing RAID Level and Concatenation Performance 1 Controller supported RAID Levels 1 Number of Physical Disks per Virtual Disk Maximum Number of Virtual Disks per Controller RAID Level 6 Striping with additional distributed parity RAID 6 provides data redundancy by using data striping in combination with parity information Similar to RAID 5 the parity is distributed within each stripe RAID 6 however uses an additional physical disk to maintain parity such that each stripe in the disk group maintains two disk blocks with parity information The additional parity provides data protection in the event of two disk failures In Figure 3 5 the two sets of parity information are identified as P and Q Figure 3 5 RAID6 Strip RAID 6 Characteristics Groups n disks as one large virtual disk with a capacity of n 2 disks 1 Redundant information parity is alternately stored on all disks The virtual disk remains functional with up to two disk failures The data is reconstructed from the surviving disks
48. path mode and to execute connector tasks Logical Connector Properties The connector properties can vary depending on the model of the controller Connector properties may include Property Definition These icons represent the severity or health of the storage component See Storage Component Severity for more information A Warning or Critical severity may indicate that the connector is unable to communicate with attached devices such as an enclosure Check the status of attached devices See Cables Attached Correctly and Isolate Hardware Problems for more information Name This property displays the connector number usually 0 State This property displays the current status of the connector Possible values are Ready The connector is functioning normally Degraded The connector has encountered a failure and is operating in a degraded state Failed The connector has encountered a failure and is no longer functioning Connector This property displays whether the connector is operating in RAID mode The connector will always be a SAS connector Type Path Health The path health of the connectors is represented as normal warning or critical The possible values are displayed as Available Degraded or Failed If the enclosure health is displayed as degraded and further investigation shows all enclosure components EMMs Fans Physical Disks Power Supplies and Temperature t
49. that the EMM in a SCSI enclosure supports Fan Properties Use this window to view information about the enclosure s fans The fans are a component of the enclosure s cooling module The following table describes the fan properties Property Definition Status These icons represent the severity or health of the storage component Normal OK Warning Non critical Critical Fatal See Storage Component Severity for more information Name This property displays the name of the fan State This property displays the current status of the fan Ready The fan is functioning normally Degraded The fan has encountered a failure and is operating in a degraded state Offline The fan or power supply has been removed from the enclosure Failed The fan has encountered a failure and is no longer functioning Storage Management may also be unable to communicate with the enclosure using SES commands The Failed state is displayed when the enclosure does not respond to a status query from Storage Management for any reason For example disconnecting the cable would cause this state to be displayed Missing The fan is not present in the enclosure Part This property displays the part number of the fan Number This property is not displayed for the PowerVault 22xS enclosures that have E 17 firmware or later Speed This property indicates the fan speed Possible values are Fast Medium Slow and Stopped If the fa
50. the controller will not be protected by the hot spare in either of the following circumstances 1 The controller is a SCSI controller and the partition size of the disk is larger than the global hot spare 1 The controller is a SAS controller and the disk size is larger than the global hot spare In this case you can unassign the global hot spare after creating a new virtual disk and then assign a new and larger hot spare to cover all redundant virtual disks on the controller See RAID Controller Technology SCSI SATA ATA and SAS to determine whether the controller is using SCSI or SAS technology On the PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di 4e Si 4e Di and CERC ATA100 4ch controllers the virtual disk state is not updated until the controller performs an I O operation This means that when a redundant virtual disk is degraded on one of these controllers the hot spare will not be activated until the controller performs an I O operation See I O and Reboot Requirements for Detecting Physical Disk Status Changes for more information Dedicated Hot Spare Considerations The following considerations apply to dedicated hot spares Considerations for RAID 10 and RAID 50 If you have created a RAID 10 or RAID 50 virtual disk that does not fully consume its member physical disks then you will not be able to assign a dedicated hot spare to the RAID 10 or RAID 50 virtual disk Storage Management does not allow you to create RAID 10
51. the status of the virtual disk is displayed as Degraded or Failed because of the hot spare protection policy violation you must assign the required number of hot spares as defined in the protection policies for the status to be displayed as normal Hot Spare Protection Policy is not applicable to PERC S100 and S300 controllers Considerations for Enclosure Affinity Enclosure affinity settings for dedicated hot spare are applicable only on PERC 5 and PERC 6 family of controllers 1 Enclosure affinity settings for a global dedicated hot spare are not automatically set when you upgrade to Dell OpenManage version 6 1 Enclosure affinity settings for a global dedicated hot spare are not automatically set when you import a foreign virtual disk Back to Contents Page Back to Contents Page Moving Physical and Virtual Disks from One System to Another Dell OpenManage Server Administrator Storage Management User s Guide Required Conditions Migrating SCSI Virtual Disks to Another System Migrating SAS Virtual Disks to Another System This section describes how to move physical and virtual disks from one system to another Required Conditions This section applies to PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di CERC ATA100 4ch PERC 5 E and PERC 5 i and SAS 5 iR controllers After some planning and preparation it is possible to migrate physical and virtual disks from one controller enclosure or se
52. the virtual disk In this case the only possibility for recovery is to restore from a previous backup of the virtual disk 2 Perform a Check Consistency on the virtual disk that you have backed up onto tape 3 Restore the virtual disk from the tape onto healthy physical disks Cannot Create a Virtual Disk You might be attempting a RAID configuration that is not supported by the controller Check the following How many virtual disks already exist on the controller Each controller supports a maximum number of virtual disks See Maximum Number of Virtual Disks per Controller for more information Is there adequate available space on the disk The physical disks that you have selected for creating the virtual disk must have an adequate amount of free space available The controller may be performing other tasks such rebuilding a physical disk that must run to completion before the controller can create the new virtual disk A Virtual Disk of Minimum Size is Not Visible to Windows Disk Management If you create a virtual disk using the minimum allowable size in Storage Management the virtual disk may not be visible to Windows Disk Management even after initialization This occurs because Windows Disk Management is only able to recognize extremely small virtual disks if they are dynamic It is generally advisable to create virtual disks of larger size when using Storage Management Virtual Disk Errors on Linux On some ver
53. to Update Storage Configuration Changes 1 Time Delay in Displaying Configuration Changes U Do Use nmirror es my controller support this feature See Supported Features the Unmirror task to separate mirrored data and restore one half of the mirror to free space Unmirroring a RAID 1 or RAID 1 concatenated virtual disk results in a single nonredundant concatenated virtual disk Unmirroring a RAID 10 virtual disk results in a single nonredundant RAID 0 striped virtual disk Data is not lost during this operation K K K K To NOTE The Unmirror task is not supported on the CERC SATA1 5 2s controller NOTE On the PERC 3 Si PERC 3 Di and CERC SATA1 5 6ch controllers doing an Unmirror on a RAID 1 concatenated virtual disk results in a concatenated virtual disk that cannot be subjected to any further modification You cannot reconfigure or add disks to the resulting concatenated virtual disk If you do an Unmirror on a RAID 1 virtual disk the resulting concatenated virtual disk can be reconfigured back to a RAID 1 virtual disk After you have reconfigured to a RAID 1 virtual disk further reconfiguration may be possible NOTE This operation is not supported when using a dynamic virtual disk with a PERC 3 Si PERC 3 Di or CERC SATA1 5 6ch controller NOTE On Linux an Unmirror cannot be performed on a mounted virtual disk Unmirror Click Unmirror If you want to exit without unmirroring cli
54. to use RAID 5 o Select RAID 6 for striping with additional distributed parity This selection groups n disks as one large virtual disk with a capacity of n 2 disks The virtual disk remains functional with up to two disk failures RAID 6 provides better read performance but slower write performance Your system must have at least four disks to use RAID 6 o Select RAID 10 for striping over mirror sets This selection groups n disks together as one large virtual disk with a total capacity of n 2 disks Data is striped across the replicated mirrored pair disks When a disk fails the virtual disk continues to function The data is read from the surviving mirrored pair disk This feature provides the best failure protection read and write performance Your system must have at least four disks to use RAID 10 o Intelligent Mirroring Automatically calculates the span composition based on the physical disks you select Spans are not displayed on this screen Select Continue to view the span grouping on the Summary screen Create Virtual Disk Advanced Wizard Step 4 of 4 Storage Management calculates the optimum span composition in the following manner o Determining span calculation Calculating the number of disks that can be utilized from the selected disks Maximizing the number of spans in order to increase the I O performance o Determining the mirror for the physical disks The mirror is determined in a way that ensur
55. tree view displays a Storage object The Storage Management features are accessible by selecting the Storage object or expanding the Storage object and selecting a lower level object Health Subtab The Health subtab displays status information for the storage components See Storage Health for more information Information Configuration Subtab The Information Configuration subtab displays the property information for a storage object The Information Configuration subtabs also have drop down menus and buttons for executing storage tasks or launching wizards Drop down Menus and Wizards for Running Tasks Many of the storage objects displayed in the tree view have tasks Examples of these tasks include creating virtual disks assigning hot spares reconditioning a battery and so on To access a storage object s task select the component in the tree view and then select the Information Configuration subtab The Information Configuration subtabs have task drop down menus or buttons for launching a task Using the Storage Management Command Line I nterface Storage Management has a fully featured command line interface CLI See the Dell OpenManage Server Administrator Command Line Interface User s Guide on the Dell Support website at support dell com manuals for more information Displaying the Online Help Storage Management provides extensive online help This help is available from the Server Administrator graphical user interfac
56. use the Clear Foreign Configuration task To reset the controller configuration 1 Review the virtual disks that will be destroyed by resetting the controller configuration Make backups as necessary Click Blink at the bottom of the screen to blink the physical disks included in the virtual disks 2 Click Reset Configuration when you are ready to erase all information on the controller To exit without resetting the controller configuration click Go Back to Previous Page To locate this task in Storage Management 1 Expand the Storage tree object to display the controller objects 2 Select a controller object 3 Select the Information Configuration subtab 4 Select Reset Configuration from the Available Tasks drop down menu 5 Click Execute You can also locate this task from the Change Controller Properties drop down menu For more information see Change Controller Properties Export Log Does my controller support this feature See Supported Features The Export Log task exports the controller log to a text file The log gives detailed information on the controller activities and can be useful for troubleshooting On a Microsoft Windows system the log file is exported to the windows or winnt directory On a Linux system the log file is exported to the var log directory Depending on the controller the log file name will be either afa_ lt mmdd gt log or Isi_ lt mmdd gt log where lt mmdd gt i
57. version 1 Expand the tree view until the EMMs object is displayed 2 Select the EMMs object The firmware version for each EMM is displayed in the Firmware Version column in the right pane For information related to the enclosure s EMMs see Enclosure Management Modules EMMs Enclosure Components For information on attached components see the following topics 1 Physical Disk Properties and Tasks 1 EMM Properties 1 Fan Properties 1 Power Supply Properties 1 Temperature Probe Properties and Tasks Set Asset Data Does my enclosure support this feature See Supported Features You can change the enclosure s asset tag and asset name The new asset tag and asset name that you specify are displayed on the enclosure s Information Configuration subtab To change the enclosure s asset tag and asset name 1 Type the new asset tag name in the New asset tag text box You can specify an inventory number or other useful information for your environment The asset tag typically refers to the enclosure hardware 2 Type the new asset name in the New asset name text box You can specify a name useful to you for organizing your storage environment For example the asset name could refer to the type of data stored on the enclosure or to the enclosure s location 3 Click Apply Changes If you want to exit and cancel your changes click Go Back To Enclosure Information Page To locate this task in Storage
58. 0 Minimum number of physical disks in a RAID 6 aooo a Ce Le Minimum number of physical disks in a RAID 60 Be e O e OO b O f Supported RAID Levels Table A 34 RAID Levels Supported by the PERC H800 PERC H700 Adapter PERC H700 Integrated and PERC H700 Modular Controllers RAID Level PERC H800 PERC H700 Adapter PERC H700 Integrated PERC H700 Modular Concatenation RAID 0 RAID 1 RAID 5 RAID 10 RAID 50 RAID 6 RAID 60 CC e e Read Write Cache and Disk Cache Policy Table A 35 Read Write and Cache Policy Supported by the PERC H800 PERC H700 Adapter PERC H700 Integrated and PERC H700 Modular Controllers Read Write and Cache Policy PERC H800 PERC H700 Adapter PERC H700 Integrated PERC H700 Modular Cache settings oO wo lt lt M wo lt e wo es o wo Read Policy lt p wo lt wo lt wn oO wo es es oO wo Read Ahead Enabled e e Adaptive Read Ahead es Yes Yes es No Read Ahead Disabled Yes Yes Yes es Write Policy Yes Yes Yes Write Back Enabled Yes Yes Yes Write Through Disabled Yes Yes Yes Force Write Back Enabled Always Yes Yes Yes Write Cache Enabled Protected Cache Policy Disk Cache Policy e e Cache 1 0 Direct 1 0 Hult ii lilt ojo o o Hutu lu oO wo lt wo lt wn o uo Enclosure Support Table A 36 En
59. 0 Modular Recondition Battery no No Connector Tasks Table A 30 Connector Tasks Supported by the PERC H800 PERC H700 Adapter PERC H700 Integrated and PERC H700 Modular Controllers Connector Task Name PERC H800 PERC H700 Adapter PERC H700 Integrated PERC H700 Modular Physical Disk Tasks Table A 31 Physical Disk Tasks Supported by the PERC H800 PERC H700 Adapter PERC H700 Integrated and PERC H700 Modular Controllers Physical Disk Task Name PERC H800 PERC H700 Adapter PERC H700 Integrated PERC H700 Modular Blink Unblink Assign and Unassign Global Hot Spare Yes o wo Prepare to Remove Offline Yes Online Yes Initialize no Rebuild Yes Cancel Rebuild Yes Remove Dead Disk Segments Format Disk Clear Cancel Clear o wo lt oO Ww o wo Instant Secure Erase lt M wn Cancel Replace Member Virtual Disk Tasks Table A 32 Virtual Disk Tasks Supported by the PERC H800 PERC H700 Adapter PERC H700 Integrated and PERC H700 Modular Controllers Virtual Disk Task Name PERC H800 PERC H700 Adapter PERC H700 Integrated PERC H700 Modular Create Virtual Disk Express Wizard Yes Yes Yes Yes Blink Unblink Yes Yes Yes Yes Reconfigure Yes Yes Yes Yes Change Policy Yes Yes Yes Yes Delete any Virtual Disk Yes Yes Yes Yes Check Consistency Yes Yes Yes Yes Cancel Check Consistency Yes Yes Yes Yes Cancel Background Initial
60. 1 Characteristics Groups n n disks as one virtual disk with the capacity of n disks The controllers currently supported by Storage Management allow the selection of two disks when creating a RAID 1 Because these disks are mirrored the total storage capacity is equal to one disk Data is replicated on the two disks 1 When a disk fails the virtual disk still works The data will be read from the failed disk s mirror Better read performance but slightly slower write performance 1 Redundancy for protection of data RAID 1 is more expensive in terms of disk space since twice the number of disks are used than required to store the data without redundancy Related I nformation See the following 1 Organizing Data Storage for Availability and Performance 1 Comparing RAID Level and Concatenation Performance 1 Controller supported RAID Levels 1 Number of Physical Disks per Virtual Disk 1 Maximum Number of Virtual Disks per Controller RAID Level 5 Striping with distributed parity RAID 5 provides data redundancy by using data striping in combination with parity information Rather than dedicating a physical disk to parity however the parity information is striped across all physical disks in the disk group Figure 3 4 Striping Disks with Distributed Parity RAID 5 Characteristics 1 Groups n disks as one large virtual disk with a capacity of n 1 disks 1 Redundant information
61. 11 where lt localhost gt is the assigned name for the managed system and 1311 is the default port or https lt IP address gt 1311 where lt IP address gt is the IP address for the managed system and 1311 is the default port K NOTE You must type https not http in the address field to receive a valid response in your browser User Privileges Server Administrator provides security through the User Power User and Administrator user groups Each user group is assigned a different level of access to the Server Administrator features Administrator privileges are required to access all Storage Management features Administrator privilege allows you to execute the drop down menu tasks launch wizards and use the omconfig storage command line interface commands Without Administrator privileges you cannot manage and configure the storage component User and Power User privileges allow you to view storage status but not manage or configure storage With User and Power User privileges you can use the omreport storage command but not the omconfig storage command For more information on user groups and other Server Administrator security features see the Dell OpenManage Server Administrator User s Guide Using the Graphical User Interface The following sections describe how to access the Storage Management features using the Server Administrator graphical user interface GUI Storage Object The Server Administrator
62. 3 If not the condition is cleared without the need for step 3 3 To clear these bad blocks execute the Clear Virtual Disk Bad Blocks task This Clear Virtual Disk Bad Block feature is applicable only to PERC H700 and PERC H800 family of controllers Virtual Disk Properties and Tasks Use this window to view information about the virtual disks and execute virtual disk tasks Virtual Disk Properties The virtual disk properties can vary depending on the model of the controller Virtual disk properties may include Property Status Name State Virtual Disk Bad Block Secured Hot Spare Policy Violated Layout Size Device Name Definition These icons represent the severity or health of the storage component Normal OK Warning Non critical Critical Fatal See Storage Component Severity for more information This property displays the virtual disk name This property displays the current status of the virtual disk Possible values are Ready The virtual disk is functioning normally Degraded A physical disk in a redundant virtual disk is not online Resynching A consistency check is being performed on the virtual disk On the PERC 3 Si 3 Di and CERC SATA1 5 6ch controllers reconfiguring a concatenated virtual disk to a RAID 1 may cause the virtual disk to be in Resynching state Performing a Cancel Check Consistency on a virtual disk while i
63. A 7 RAID Levels Supported by the PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4 Di 4e Si 4e Di 4e DC CERC ATA100 4ch and 4 1M Controllers RAID Level PERC PERC PERC PERC PERC PERC PERC PERC PERC CERC ATA 3 SC 3 DC 3 QC 4 SC 4 DC 4 DI 4e SI 4e DI 4e DC 100 4ch Concatenation ves Yes ves ves ves ves ves fyes ves fve Ramo ves ves fres ves ves ves fres fres ves fe Rama ves ves ves ves ves fyes ves fres fes fe Rams ves ves fves ves ves ves ves fves fres fe Ramao ves res fres fres fres fes fes fes es fe Ramso ves ves ves ves ves ves ves fres fes rape fno fno fno fno fo fno fno jo f Rameo fno no fno fno no fno jno jo fo Read Write and Disk Cache Policy Table A 8 Read Write and Disk Cache Policy Supported by the PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4 Di 4e Si 4e Di 4e DC CERC ATA100 4ch and 4 IM Controllers Read Write and Disk PERC PERC PERC PERC PERC PERC PERC PERC PERC CERC ATA PERC Cache Policy 3 SC 3 DC 3 QC 4 SC 4 DC 4 DI 4e SI 4e DI 4e DC 100 4ch 4 1M No pe fre e e e vs fes fs do _ Cache settings Read Policy Read Ahead Enabled ee Adaptive Read Ahead pes ve No Read Ahead Disabled Write Policy Write Back Enabled Write Through Disabled as ve pes pe Force Write Back Enabled Always es ve ves fve ves ve Write Cache Enabled Protected Disk Cache Policy Cache 1 0 Dir
64. C 3 QC 4 SC 4 DC 4e DC 4 Di 4e Si 4e Di and CERC ATA100 4ch controllers When you delete a virtual disk you free up or make available space on the physical disks that were being used by the deleted virtual disk If you have created several virtual disks on a disk group then deleting virtual disks can result in pockets of free space residing in various locations on the physical disks When you create a new virtual disk the controller must decide which free space on the physical disks to allocate to the new virtual disk The PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di 4e Si 4e Di and CERC ATA100 4ch controllers look for the largest area of free space and allocate this space to the new virtual disk 1 SCSI limitation of 2TB Virtual disks created on a PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di 4e Si 4e Di CERC ATA100 4ch and SAS 5 iR controller cannot be created from physical disks with an aggregate size greater than 2TB This is a limitation of the controller implementation For example you cannot select more than 30 physical disks that are 73GB in size regardless of the size of the resulting virtual disk When attempting to select more than 30 disks of this size a pop up message is displayed that indicates that the 2TB limit has been reached and that you should select a smaller number of physical disks The 2TB limit is an industry wide SCSI limitation Expanding virtual disks You can only use the Reconfigure task to expand a virt
65. C 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di 4e Si and 4e Di Controllers for more information on the background initialization task The background initialization rate configurable between 0 and 100 represents the percentage of the system resources dedicated to running the background initialization task At 0 the background initialization will have the lowest priority for the controller will take the most time to complete and will be the setting with the least impact to system performance A background initialization rate of 0 does not mean that the background initialization is stopped or paused At 100 the background initialization will be the highest priority for the controller will minimize the background initialization time and will be the setting with the most impact to system performance To change the controller s background initialization rate 1 Type a numerical value in the New Background Initialization Rate text box The value must be within the 0 100 range 2 Click Apply Changes If you want to exit and cancel your changes click Go Back to Previous Page To locate this task in Storage Management 1 Expand the Storage tree object to display the controller objects 2 Select a controller object 3 Select the Information Configuration subtab 4 Select Set Background Initialization Rate from the Available Tasks drop down menu 5 Click Execute You can also locate this task from the Change Controller Prope
66. CERC SATA1 5 6ch 1 CERC SATA1 5 2s CERC ATA RAID Controllers The following Cost Effective RAID Controller CERC controllers use Advanced Technology Attachment ATA technology 1 CERC ATA100 4ch 1 CERC 6 1 controller family SAS RAID Controllers The following RAID controllers use Serial Attached SCSI SAS technology PERC 5 E PERC 5 i Integrated 1 PERC 5 i Adapter 1 SAS 5 iR Integrated 1 SAS 5 iR Adapter i PERC 6 E PERC 6 1 controller family SAS 6 iR controller family 1 PERC S100 and S300 controllers PERC H200 H700 and H800 controllers RAID Controller Features Different controllers have different features If you have more than one controller attached to your system you may notice that the tasks displayed on the controller s Information Configuration subtab are different for each controller Controllers may also have differences in their read write and cache policies as well as how they handle hot spares You should be aware of these differences when creating virtual disks and assigning hot spares The following describes some of the RAID controller features and provides links to a more detailed explanation For information on which controllers support which features see Supported Features Hot spares On RAID controllers a hot spare is a backup for a disk that fails See the Protecting Your Virtual Disk with a Hot Spare Rebuilding data You can rebuild data from a failed physical
67. Configuration from the Controller tasks Related I nformation Foreign Configuration Operations 1 Importing Foreign Configurations Clear Foreign Configuration Clear Foreign Configuration Does my controller support this feature See Supported Features After moving a physical disk from one controller to another you may find that the physical disk contains all or some portion of a virtual disk foreign configuration You can identify whether or not a previously used physical disk contains a foreign configuration virtual disk by checking the physical disk state If the physical disk state is Foreign then the physical disk contains all or some portion of a virtual disk Use the clear foreign configuration task to clear or erase the virtual disk information from the newly attached physical disks NOTE The clear foreign configuration task permanently destroys all data residing on the physical disks that have been added to the controller If more than one foreign virtual disk is present you cannot choose which one to clear All will be cleared or erased You may prefer to import the virtual disk rather than destroy the data See Importing Foreign Configurations and Importing Recovering Foreign Configurations for more information To clear a foreign configuration Click Clear Foreign Configuration when you are ready to clear or erase all virtual disks residing on physical disks that have been added to the
68. Controller Minimum Virtual Disk Size Maximum Virtual Disk Size Maximum Number of Spans per Virtual Disk Maximum Number of Physical Disks per Span Minimum Stripe Size 8k Maximum Stripe Size 128k Maximum Number of Virtual Disks per Disk Group Maximum Number of Physical Disks in a RAID 0 Maximum Physical Disks in a RAID 1 Maximum Number of Physical Disks in a RAID 5 Maximum Number of Physical Disks in a RAID 10 Minimum Number of Physical Disks that Can Be Concatenated Disks in a RAID 0 D1 D5 D10 D50 D6 Maximum Number of Physical Disks in a RAID 50 Minimum Number of Physica Minimum Number of Physical Disks in a RAI Minimum Number of Physical Disks in a RAI Minimum Number of Physical Disks in a RAI Minimum Number of Physical Disks in a RAI Maximum number of physical disks in a RAI Maximum number of physical disks in a RAID 60 D6 disks in a RAID 60 Minimum number of physical disks in a RAI Minimum number of physica Supported RAID Levels Table A 25 RAID Levels Supported by the PERC 5 E PERC 5 i PE 8k 8k a a E 16 256 16 16 with firmware version 6 1 Sc RC 6 E PERC 6 I PERC 6 Modular and CERC 6 I Controllers RAID Level PERC 5 E PERC 5 1 PERC 6 E PERC 6 1 Concatenation RAID 0 RAID 1 RAID 5 RAID 10 RAID 50 RAID 6 RAID 60 Read Write Cache and Disk Cache Policy
69. Controller Tasks drop down menu 5 Click Execute Related Information Set Rebuild Rate 1 Set Background Initialization Rate 1 Set Check Consistency Rate 1 Set Reconstruct Rate Abort check consistency on error 1 Revertible Hot Spare Loadbalance 1 Redundant Path Configuration Manage Preserved Cache The Managed Preserved Cache feature provides you the option to ignore or restore the controller cache data In the write back policy data is written to the cache before being written to the physical disk If the virtual disk goes offline or is deleted for any reason the data in the cache is lost Data in the cache may also be lost in case of unintended cable or power failure In the event of such a failure Storage Management preserves the data written on the preserved or dirty cache until you recover the virtual disk or clear the cache This feature is available only on SAS controllers with firmware version 6 1 and later The status of the controller is affected by the preserved cache The controller status is displayed as degraded if the controller has preserved cache A CAUTI ON You may not be able to use Storage Management to manage the preserved cache in some cases As an example consider you have a RAID 1 level with two disks D1 and D2 If you now remove D2 the virtual disk is degraded and the data in the controller cache is written to D1 At this point D1 has the la
70. Dell OpenManage Server Administrator Storage Management User s Guide Overview Virtual Disks Getting Started Physical Disks Understanding RAID Concepts Protecting Your Virtual Disk with a Hot Spare Quick Access to Storage Status and Tasks Moving Physical and Virtual Disks from One System to Another Storage Information and Global Tasks BIOS Terminology Setting Hot Spare Protection Policy Troubleshooting Controllers Frequently Asked Questions RAID Controller Batteries Supported Features Connectors Determining the Health Status for Storage Components Enclosures and Backplanes Notes and Cautions K NOTE A NOTE indicates important information that helps you make better use of your computer A CAUTI ON A CAUTI ON indicates potential damage to hardware or loss of data if instructions are not followed Information in this document is subject to change without notice 2009 Dell Inc All rights reserved Reproduction in any manner whatsoever without the written permission of Dell Inc is strictly forbidden Trademarks used in this text Dell the DELL logo PowerVault and Dell OpenManage are trademarks of Dell Inc Microsoft Windows are registered trademarks and Windows Server is a trademark of Microsoft Corporation in the United States and other countries VMware is a registered trademark of VMware Inc Server Administrator includes software developed by the Apache Software Foundation www apac
71. Hot Spare option to use Replace Member Disk task The destination physical disk should be in the Ready state available to be written to and of appropriate size and type K NOTE The destination physical disk can also be an available hot spare To Replace a Member Disk Step 1 of 2 1 Select the physical disk in the Connector table that you want to replace 2 Select the destination disk in the Disks available for replace member operation table A CAUTI ON If you choose a hot spare as the destination physical disk your virtual disk will be without a hot spare unless you assign one K NOTE You can select only one source destination physical disk at a time 3 Click Apply Changes If you want to exit without replacing the member disk click Go Back To Virtual Disk Page You can view the progress of the Replace Member Disk task on the Physical Disk Details page For more information see Physical Disk Properties and Tasks To locate this task in Storage Management 1 Expand the Storage tree object to display the controller objects 2 Expand a controller object 3 Select the Virtual Disks object 4 Select Replace Member Disk from the Available Tasks drop down menu 5 Click Execute Virtual Disk Task Replace Member Disk Step 2 of 2 This screen displays the summary of the attributes of the virtual disk in which you replaced the member disk Use this screen to review your changes before completing the virtu
72. ID level Evaluate your specific environment requirements before choosing a RAID level K NOTE The following table does not show all RAID levels supported by Storage Management For information on all RAID levels supported by Storage Management see Choosing RAID Levels and Concatenation Table 3 1 RAID Level and Concatenation Performance Comparison RAID Data Read Performance Write Performance Rebuild Minimum Disks Suggested Uses Level Availability Performance Required Concatenation No gain No gain No gain N A 1 or 2 depending More cost efficient than redundant on the controller RAID levels Use for noncritical data RAID 0 Very Good Very Good IN e Noncritical data RAID 1 Excellent Very Good Good Good 2N Small databases database logs N 1 critical information RAID 5 Good Sequential reads good Fair unless using Fair N 1 Databases and other read Transactional reads Very write back cache N at least two intensive transactional uses good disks RAID 10 Excellent Very Good Fair Good 2N x X Data intensive environments large records RAID 50 Good Very Good Fair Fair N 2 Medium sized transactional or N at least 4 data intensive uses RAID 6 Excellent Sequential reads good Fair unless using Poor N 2 Critical information Databases and Transactional reads Very write back cache N at least two other read intensive transactional good disks uses RAID 60 Ex
73. Learn cycle The Learn cycle can be delayed for a maximum of seven days 2 Type a numerical value in the Hours text box The value must be within the 0 23 range The value you enter indicates the number of hours for which you want to delay the battery Learn cycle 3 Click Apply Changes If you want to exit and cancel your changes click Go Back To Battery Information Page To locate this task in Storage Management 1 Expand the Storage tree object to display the controller objects 2 Expand the controller object 3 Select the Battery object 4 Select Delay Learn Cycle from the Available Tasks drop down menu 5 Click Execute Related I nformation 1 Battery Properties and Tasks 1 Start Learn Cycle Back to Contents Page Back to Contents Page BIOS Terminology Dell OpenManage Server Administrator Storage Management User s Guide BIOS Terms and the PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di and CERC ATA100 4ch Controllers BIOS Terms and the PERC 3 Si 3 Di CERC SATA1 5 6ch and CERC SATA1 5 2s Controllers The terminology used by Storage Management can be different from the terminology used in the controller BIOS The following sections show some of these differences BIOS Terms and the PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di and CERC ATA100 4ch Controllers Table 15 1 Naming convention differences between Storage Management and PERC BIOS Configuration Utility
74. Management 1 Expand the Storage tree object to display the controller objects 2 Expand a controller object 3 Expand a Connector object 4 Select the enclosure object 5 Select the Information Configuration subtab 6 Select Set Asset Data from the Available Tasks drop down menu 7 Click Execute Set Temperature Probe Values Does my enclosure support this feature See Supported Features The temperature probes monitor the enclosure s temperature Each temperature probe has a Warning and a Failure threshold The Warning threshold indicates that the enclosure is approaching an unacceptably warm or cool temperature You can modify the Warning threshold The Failure threshold indicates that the enclosure has reached a dangerous temperature that may cause damage and data loss You cannot change the default values for the Failure threshold To change the temperature probe s Warning threshold 1 The enclosure s temperature probes are listed in the Temperature Probes section of the screen Select the probes that you want to change 2 Select Set new values in the Set New Temperature Probe Values section of the screen 3 Type the lowest acceptable temperature in Celsius for the enclosure in the Minimum Warning Threshold text box The text box label indicates the range that you can specify 4 Type the highest acceptable temperature in Celsius for the enclosure in the Maximum Warning Threshold text box The text box label i
75. Maximum number of physical disks in a RAID 60 Minimum number of physical disks in a RAID 6 Minimum number of physical disks in a RAID 60 Maximum Number of Physical Disks that Can Be Concatenated Minimum Number of Physical Disks that Can Be Concatenated Maximum number of disks in configured state part of a virtual disk or hot spares Read Write Cache and Disk Cache Policy SAS 5 IR SAS 6 iR PERC H200 None tl m 64k 64k lili gt 10 Adapter 10 Integrated 4 Modular p be Max ma None E moo je 64 e 64 E A e Re js Ins 10 Adapter 10 Integrated 4 Modular ma fma ma ma 2 p Re ma fm m f ma fma ma fma ma ma ma fma ma fma e NA NA N NIN gt N N sith NA NA m Table A 44 Read Write and Cache Policy Supported by the SAS 5 iR SAS 6 iR and H200 Controllers Read Write and Cache Policy SAS 5 1R SAS 6 iR Cache settings Read Policy Read Ahead Enabled Adaptive Read Ahead No Read Ahead Disabled Write Policy Write Back Write Through Force Write Back Enabled Always Write Cache Enabled Protected Cache Policy PERC H200 Disk Cache Policy fo vo vo _ Direct 1 0 Enclosure Support Table A 45 Enclosure Support on the SAS 5 iR SAS 6 iR and H200 Controllers Enclosure S
76. No wo Ino ves pe Io No Jo Io No Jo fo No Jo Io No Jo no ves ves s Import Recover Foreign Configuration No Yes Yes Iwo No wo Io No _ wo fo No Jo Battery Task Name SAS 5 iR SAS 6 iR PERC H200 Recondition Battery Start Learn Cycle Delay Learn Cycle Connector Tasks Table A 39 Connector Tasks Supported on the SAS 5 iR SAS 6 iR and H200 Controllers Connector Task Name SAS 5 IR SAS 6 iR PERC H200 Physical Disk Tasks Table A 40 Physical Disk Tasks Supported on the SAS 5 iR SAS 6 iR and H200 Controllers en p p Physical Disk Task Name SAS 5 IR SAS 6 iR PERC H200 Blink Unblink Yes Yes Yes Task only available when an enclosure or backplane and LEDs on the physical disks are present Global Hot Spare spares spares Rebuild A NA Cancel Rebuild Remove Dead Disk Segments Format Disk Clear Cancel Clear Virtual Disk Tasks Table A 41 Virtual Disk Tasks Supported by the SAS 5 iR SAS 6 iR and H200 Controllers Virtual Disk Task Name SAS 5 IR SAS 6 iR PERC H200 Assign and Unassign Dedicated Hot Spare Create Virtual Disk Create Virtual Disk Advanced Wizard Create Virtual Disk Express Wizard Rename Blink Unblink Reconfigure Change Policy Split Mirror Unmirror Delete Last Virtual Disk Delete any Virtual Disk Check Consistency C
77. Patrol Read Patrol Read identifies disk errors in order to avoid disk failures and data loss or corruption See Set Patrol Read Mode for more information Disk migration or foreign configurations Some controllers enable you to move physical disks that contain one or more virtual disks to another controller The receiving controller is able to recognize and import the foreign configuration virtual disks See Foreign Configuration Operations for more information Controller supported RAID Levels RAID controllers may support different RAID levels For information on which RAID levels a controller supports see the supported RAID levels section for the controller in Supported Features Controller supported Stripe Sizes When creating a virtual disk you may need to specify the stripe size for the virtual disk Different controllers have different limitations on the stripe sizes they can support For information on the stripe sizes a controller supports see the virtual disk specifications section for the controller in Supported Features RAID Controller Read Write Cache and Disk Cache Policy When creating a virtual disk you specify the read write and cache policies for the virtual disk The following sub section describes these policies K NOTE Read write and cache policies are not supported on the CERC SATA1 5 2s controller Read Policy Does my controller support this feature See Supported Features T
78. RC S100 PERC S300 Maximum Number of Virtual Disks per Controller ie Minimum Virtual Disk Size Maximum Virtual Disk Size Maximum Number of Spans per Virtual Disk Ima NA Maximum Number of Physical Disks per Span Minimum Stripe Size 64k Maximum Stripe Size 64k Maximum Number of Virtual Disks per Physical Disk ie Maximum Number of Physical Disks that Can Be Concatenated Maximum Number of Physical Disks in a RAID 0 le Maximum Physical Disks in a RAID 1 Maximum Number of Physical Disks in a RAID 5 Bs Eee Maximum Number of Physical Disks in a RAID 10 mn a f Minimum Number of Physical Disks that Can Be Concatenated na ja Oe Minimum Number of Physical Disks in a RAID 0 Ro hk Minimum Number of Physical Disks in a RAID 1 Minimum Number of Physical Disks in a RAID 5 Minimum Number of Physical Disks in a RAID 10 4A Supported RAID Levels Table A 50 RAID Levels Supported by the PERC S100 and S300 Controllers Read Write Cache and Disk Cache Policy Table A 51 Read Write and Cache Policy Supported by the PERC S100 and S300 Controllers Read Write and Cache Policy PERC S100 PERC S300 Cache settings Yes Yes Read Policy Yes Yes Read Ahead Enabled Adaptive Read Ahead No Read Ahead Disabled Write Policy Write Back Enabled Write Through Disabled Force Write Back Enabled Always Write Cache Enabled Protected Cache Pol
79. RC SATA1 5 2s Controllers When using the Storage Management Create Virtual Disk wizard you can only use one physical disk to create a concatenated virtual disk The Create Virtual Disk wizard imposes this limitation in order to protect the concatenated virtual disk against potential data loss in the event that you reconfigure the virtual disk to a RAID 1 mirror See Starting and Target RAID Levels for Virtual Disk Reconfiguration and Capacity Expansion for possible reconfiguration scenarios There are other situations however where you can create a concatenated virtual disk using more than one physical disk For example if you perform a Split Mirror or an Unmirror on a RAID 1 concatenated virtual disk that has four or more physical disks then the resulting concatenated virtual disks will have two or more physical disks See Split Mirror and Unmirror for an explanation of what happens to a RAID 1 concatenated virtual disk when it is split or unmirrored When using the controller BIOS you can create a concatenated virtual disk using more than one physical disk Virtual Disk Considerations on Linux On some versions of the Linux operating system the virtual disk size is limited to 1TB Before creating a virtual disk that is larger than 1TB you should make sure that your operating system supports this virtual disk size The support provided by your operating system depends on the version of the operating system and any updates or
80. Restore Dead Segments task attempts to reconstruct data from a corrupt portion of a physical disk included in a RAID 5 virtual disk The Restore Dead Segments task uses the parity or redundant information to reconstruct the lost data This task is not always able to recover lost data Delete Does my controller support this feature See Supported Features Use the Delete task to destroy all data on the virtual disk See Virtual Disk Task Delete for more information Assign and Unassign Dedicated Hot Spare Does my controller support this feature See Supported Features Use the Assign Dedicated Hot Spare task to assign a disk as a backup for a single virtual disk See Assign and Unassign Dedicated Hot Spare for more information Check Consistency Does my controller support this feature See Supported Features Use the Check Consistency task to verify the accuracy of the redundant parity information This task only applies to redundant virtual disks When necessary the Check Consistency task rebuilds the redundant data If the virtual disk is in a Failed Redundancy state running a check consistency may be able to return the virtual disk to a Ready state NOTE On the PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di 4e Si 4e Di and CERC ATA100 4ch controllers the controller firmware uses the rebuild rate setting to control the system resource allocation for the Check Consistency task See Set Rebuild Rate for more
81. Small Computer System Interface SCSI technology Ultra SCSI Ultra2 SCSI and Ultra160 SCSI 1 LS 1020 LSI 1030 and LSI PCI e U320 Non RAID SAS Controllers The following non RAID controllers use Serial Attached SCSI SAS technology SAS 5 i Integrated SAS 5 E 1 SAS 6Gbps Adapter Firmware Driver Versions Use this window to view information about the controller firmware and drivers For more information on firmware and drivers see Installation Considerations for Storage Management Firmware Driver Properties The firmware and driver properties can vary depending on the model of the controller On some controllers Storage Management may not be able to obtain the driver or firmware version In this case Storage Management displays Not Applicable Firmware and driver properties may include Property Firmware Version Minimum Required Firmware Version Driver Version Minimum Required Driver Version Storport Driver Version Minimum Required Storport Driver Version Definition This property displays the version of the firmware that is currently installed on the controller NOTE On some controllers Storage Management may not be able to obtain the firmware version In this case Storage Management displays Not Applicable This property displays the minimum firmware version that is required by Storage Management This property is only displayed if the contr
82. Storage Component Severity for more information Normal OK Warning Non critical Critical Fatal Smart Thermal This property displays whether thermal shutdown is enabled or disabled See Enable Disable Smart Thermal Shutdown for more Shutdown information Global Tasks To execute a global task select the task from the Global Tasks drop down menu and click Execute Global Tasks 1 Global Rescan 1 Enable Disable Smart Thermal Shutdown 1 Setting Hot Spare Protection Policy Global Rescan A global rescan updates configuration changes such as new or removed devices for all SCSI controllers and their attached components For information on when you may want to do a rescan see Rescan to Update Storage Configuration Changes K NOTE Global Rescan is not supported on non RAID controllers You must reboot the system before Storage Management can see configuration changes on non RAID SCSI controllers Otherwise configuration changes are not reflected in the Storage Management graphical user interface GUI K NOTE The Global Rescan task updates the Information Configuration subtab with any configuration changes To update the tree view click the server name which is displayed above the tree view K NOTE On the PERC 3 Si 3 Di and CERC SATA1 5 6ch controllers if you pause a check consistency that is being performed on a virtual disk then the virtual disk state changes to R
83. Storage Management replaces the storage management features provided by these utilities Examples of the Dell or vendor supplied Linux utilities include 1 LinFlash DellMgr DellMON 1 LINLib 1 MegaMgr 1 MegaMON Prerequisite Drivers and Firmware on Linux Operating Systems On Linux operating systems Storage Management installation is unable to detect whether the drivers and firmware on the system are at the required level for installing and using Storage Management When installing on Linux systems you will be able to complete the installation regardless of whether the driver and firmware version meets the required level If the driver and firmware version do not meet the required level however you may not have access to all functions provided by Storage Management At Storage Management runtime check your application log files for notifications on outdated firmware versions See the Storage Management readme txt for a complete listing of supported controller firmware and driver versions Version Requirements for Controller Firmware and Drivers In order for Storage Management to function properly the controllers must have the minimum required version of the firmware and drivers installed The firmware and drivers listed in the readme txt file refer to the minimum supported version for these controllers Later versions of the firmware and drivers are also supported See the Dell Support website at support dell com for the most recent drive
84. Table A 26 Read Write and Cache Policy Supported by the PERC Controllers PERC 6 1 Modular CERC 6 5 E PERC 5 i PERC 6 E PERC 6 1 PERC 6 1 Modular and CERC 6 I Read Write and Cache Policy PERC 5 E PERC 5 1 Cache settings Read Policy Read Ahead Enabled Adaptive Read Ahead No Read Ahead Disabled Write Policy Write Back Enabled Write Through Disabled Force Write Back Enabled Always Write Cache Enabled Protected Cache Policy Disk Cache Policy Cache 1 0 Direct 1 0 PERC 6 E PERC 6 I PERC 6 1 Modular CERC 6 1 lt wo e lt wo e e lt wo e lt lt wo es Yes Yes Yes Yes Enclosure Support Table A 27 Enclosure Support on the PERC 5 E PERC 5 i PERC 6 E PERC 6 1 PERC 6 1 Modular and CERC 6 I Controllers Enclosure Support PERC 5 E PERC 5 1 PERC 6 E PERC 6 1 PERC 6 I Modular CERC 6 1 Supported Features on the PERC H800 PERC H700 Adapter PERC H700 Integrated and PERC H700 Modular Controllers This section identifies the controller supported features and whether or not an enclosure can be attached to the controller 1 Controller Tasks 1 Battery Tasks 1 Connector Tasks 1 Physical Disk Tasks Virtual Disk Tasks Virtual Disk Specifications 1 Supported RAID Levels 1 Read Write Cache and Disk Cache Policy 1 Enclosure Suppor
85. a 4 NOTE On the PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di 4e Si 4e Di and CERC ATA100 4ch controllers there are special considerations when implementing RAID 10 on a disk group that has disks of different sizes See Considerations for RAID 10 and 50 on PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di 4e Si 4e Di and CERC ATA100 4ch Controllers for more information Related I nformation See the following 1 Organizing Data Storage for Availability and Performance 1 Comparing RAID Level and Concatenation Performance Controller supported RAID Levels 1 Number of Physical Disks per Virtual Disk 1 Maximum Number of Virtual Disks per Controller RAID Level 1 Concatenated Concatenated mirror RAID 1 concatenated is a RAID 1 disk group that spans across more than a single pair of physical disks This combines the advantages of concatenation with the redundancy of RAID 1 No striping is involved in this RAID type K NOTE You cannot create a RAID 1 concatenated virtual disk or reconfigure to RAID 1 concatenated with Storage Management You can only monitor a RAID 1 concatenated virtual disk with Storage Management Figure 3 9 RAID 1 Concatenated Related Information See the following 1 Organizing Data Storage for Availability and Performance 1 Comparing RAID Level and Concatenation Performance 1 Controller supported RAID Levels 1 Number of Physical Disks per V
86. a redundant virtual disk prepares the virtual disk to maintain redundant data and improves write performance For example after the background initialization of a RAID 5 virtual disk completes the parity information has been initialized After the background initialization of a RAID 1 virtual disk completes the physical disks are mirrored The background initialization process helps the controller identify and correct problems that may occur with the redundant data at a later time In this regard the background initialization process is similar to a check consistency The background initialization should be allowed to run to completion If cancelled the background initialization will automatically restart within 0 to 5 minutes Some processes such as read and write operations are possible while the background initialization is running Other processes such as creating a virtual disk cannot be run concurrently with a background initialization These processes cause the background initialization to cancel Non RAID Controller Description The non RAID SCSI and SAS controllers are non RAID controllers that support SCSI and SAS devices Because these controllers are non RAID they do not support virtual disks You can manage these non RAID controllers and their attached SCSI and SAS devices with Storage Management GZ NOTE Supported features may vary from controller to controller Non RAID SCSI Controllers The following non RAID controllers use
87. ach disk and sends alerts if a disk failure is predicted The RAID controllers check physical disks for failure predictions and if found pass this information to Storage Management Storage Management immediately displays an alert icon on the disk Storage Management also sends an alert to the Alert Log and the Microsoft Windows application log K NOTE When a controller s I O is paused you will not receive SMART alerts K NOTE The PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di 4e Si 4e Di and CERC ATA100 4ch controllers will not report SMART alerts for unassigned or hot spare disks Related I nformation 1 Replacing a Physical Disk Receiving SMART Alerts Using Alarms to Detect Failures Some storage components have alarms When enabled these alarms alert you when a component fails See the following sections for more information 1 Enable Alarm Controller 1 Enable Alarm Enclosure Using Enclosure Temperature Probes Physical disk enclosures have temperature probes that warn you when the enclosure has exceeded an acceptable temperature range For more information on using temperature probes see the following 1 SMART Thermal Shutdown 1 Set Temperature Probe Values Rescan to Update Storage Configuration Changes The Rescan task scans the storage attached to the controller s connectors channels or ports to verify the currently connected devices or to recognize devices that have
88. age Management displays the physical disks that are not being used by a virtual disk Size Requirements for Global Hot Spares on PERC 3 Si 3 Di CERC SATA1 5 6ch S100 and 300 Controllers When assigning a physical disk as a global hot spare on a PERC 3 Si 3 Di CERC SATA1 5 6ch S100 and S300 controllers the physical disk should be as large or larger than the largest physical disk on the controller Dedicated Hot Spare Considerations on PERC 3 Si 3 Di and CERC SATA1 5 6ch Controllers You can assign the same dedicated hot spare to more than one virtual disk In this case the hot spare attempts to rebuild all portions of redundant virtual disks that reside on a failed physical disk To increase the likelihood that the hot spare is able to rebuild all virtual disks you should do the following 1 Create virtual disks that share the same set of physical disks 2 Only assign dedicated hot spares to those virtual disks that share the same set of physical disks 3 Assign a hot spare that is big enough to rebuild the largest physical disk in the virtual disk For example if the virtual disk is using physical disks that are 20 MB 30 MB and 50 MB then the hot spare needs to be 50 MB or larger After the hot spare is activated to rebuild a particular virtual disk it is no longer available for rebuilding other virtual disks should an additional physical disk fail For this reason when a hot spare is activated it is automatically unassign
89. ails you will no longer be able to maintain I O operations on any of the channels included in the channel redundant configuration even though data has not been lost To restore I O do one of the following o Fix the failed channel and reboot the system o Reboot the system This will restore 1 O on the channels that have not encountered a failure The virtual disks on these channels will be in a degraded state Creating a Channel redundant Virtual Disk The following instructions describe creating a virtual disk that uses channel redundancy K NOTE Channel redundancy only applies to controllers that have more than one channel and that attach to an external disk enclosure 1 Launch the Create Virtual Disk Advanced Wizard by doing the following a Locate the controller on which you are creating a channel redundant virtual disk Expand the controller object until the Virtual Disks object is displayed b Select the Virtual Disks object and click Go To Create Virtual Disk Wizard c Click Virtual Disk Advanced Wizard 2 Complete Create Virtual Disk Advanced Wizard Step 1 of 4 This portion of the Create Virtual Disk Advanced Wizard asks you to select a RAID level When creating a channel redundant virtual disk it is recommended that you select the following RAID levels Recommended RAID Levels o PERC 3 DC 3 QC 4 DC 4e DC 4 Di and 4e Di Controllers It is recommended that you only use RAID 10 or RAID 50 o PERC 3 Di
90. al disk replace member task To Replace a Member Disk Step 2 of 2 1 Review your changes The source Physical Disk table displays details of the source physical disk The destination Physical Disk table displays details of the destination physical disk 2 Click Finish to complete the replace member task If you want to change the replace member click Go Back to Previous Page If you want to exit without making changes click Cancel Back to Contents Page
91. alth subtab and the controller severity on the Storage Dashboard display a yellow exclamation mark to indicate a Warning severity If a controller on the Storage Dashboard displays a Warning or Critical status take the following actions to investigate the cause of the Warning or Critical status 1 Click Check Alert Log displayed to the right of the controller This link displays the Alert Log Examine the Alert Log for alerts relating to the status of the controller and its lower level components The Check Alert Log link is only displayed when the controller displays a Warning or Critical status Select the controller and investigate the status of the lower level components See Storage Component Severity for more information Click the virtual disk that is in degraded state to display the Physical Disk Properties page K NOTE The virtual disk link will display only if the physical disks that are part of the virtual disk are in a Warning or Critical state For more information on how the status of lower level components is rolled up into the status displayed for the controller see Determining the Health Status for Storage Components Hot Spare Protection Policy The Set Hot Spare Protection Policy task allows you to set or modify the number of hot spares to be assigned to the virtual disks Once you set the number of assigned hot spares any deviation from the protection policy threshold triggers an alert based on the severity l
92. alues are HDD Hard Disk Drive A HDD is a non volatile storage device which stores digitally encoded data on rapidly rotating platters with magnetic surfaces SSD Solid State Drive An SSD is a data storage device that uses solid state memory to store persistent data Unknown Storage Management is unable to determine the media type of the physical disk This property displays how much of the physical disk space is being used by the virtual disks on the controller This property is not applicable for physical disks attached to non RAID controllers In certain circumstances the Used RAID Disk Space displays a value of zero 0 even though a portion of the physical disk is actually being used This occurs when the used space is 0 005 GB or less The algorithm for calculating the used disk space rounds off a figure of 0 005 GB or less to 0 Used disk space that is between 0 006 GB and 0 009 GB is rounded off to 0 01 GB This property displays the amount of available space on the disk This property is not applicable for physical disks attached to non RAID controllers his property indicates whether the disk has been assigned as a hot spare This property is not applicable for physical disks attached to on RAID controllers T n This property displays the disk s hardware vendor This property displays the disk s product ID This property displays the disk s revision number This property displays the disk s serial number
93. anagement displays the properties of the enclosure s fans power supply and temperature probes Storage Management also notifies you of enclosure status changes through alerts that are displayed in the Alert Log The following sections provide more information on the enclosure components and management features provided by Storage Management 1 SMART Thermal Shutdown 1 Enclosure Physical Disks 1 Enclosure Fans Enclosure Power Supplies 1 Enclosure Temperature Probes Enclosure Management Modules EMMs 1 Enclosure and Backplane Health 1 Enclosure and Backplane Properties and Tasks Enclosure Physical Disks The enclosure s physical disks are displayed under the enclosure object in the tree view Selecting a disk in the tree view displays the disk s status information Enclosure Fans The fans are a component of the enclosure s cooling module The fans are displayed by expanding the enclosure object in the tree view You can select the Fans object to display their status information Enclosure Power Supplies The enclosure s power supplies are displayed under the Power Supplies object in the tree view You can select the Power Supplies object to display their status information Enclosure Temperature Probes The enclosure s temperature probes are displayed under the Temperatures object You can select the Temperatures object to display their status information The status informatio
94. ancel Check Consistency Pause Check Consistency Resume Check Consistency Cancel Background Initialization BGI Format Virtual Disk Cancel Format Virtual Disk Restore Dead Disk Segments Initialize Virtual Disk Fast Initialize Virtual Disk Slow Initialize Virtual Disk Cancel Initialize Virtual Disk Supported RAID Levels Table A 42 RAID Levels Supported by the SAS 5 iR SAS 6 iR and H200 Controllers RAID Level SAS 5 IR SAS 6 iR PERC H200 RAID 1 CE ee Virtual Disk Specifications Table A 43 Virtual Disk Specifications for the SAS 5 iR SAS 6 iR and PERC H200 Controllers Virtual Disk Specification Maximum Number of Virtual Disks per Controller Minimum Virtual Disk Size Maximum Virtual Disk Size Maximum Number of Spans per Virtual Disk Maximum Number of Physical Disks per Span Minimum Stripe Size Maximum Stripe Size Maximum Number of Virtual Disks per Disk Group Maximum Number of Physical Disks in a RAID 0 Maximum Physical Disks in a RAID 1 Maximum Number of Physical Disks in a RAID 5 Maximum Number of Physical Disks in a RAID 10 Maximum Number of Physical Disks in a RAID 50 Minimum Number of Physical Disks in a RAID 0 Minimum Number of Physical Disks in a RAID 1 Minimum Number of Physical Disks in a RAID 5 Minimum Number of Physical Disks in a RAID 10 Minimum Number of Physical Disks in a RAID 50 Maximum number of physical disks in a RAID 6
95. and volume management To implement disk and volume management you need to use the native disk and volume management utilities provided by your operating system Support for Security Key Management Storage Management enables creating changing and deleting the Security Key on a security capable controller PERC H700 and H800 family of controllers are security capable You can enable security on these security capable controllers through the Storage Management graphical user interface GUI or the Command Line Interface CLI Setting a Security Key allows you to create secured virtual disks using Self Encryption Disks SED The data stored in the secured virtual disk is encrypted For information on Command Line Interface see Dell OpenManage Server Administrator Command Line Interface User s Guide on the Dell Support website at support dell com manuals Security Key The controller uses the Security Key to lock or unlock access to Self Encryption Disks SEDs You can create only one Security Key for each security enabled controller Create a Security Key on a security capable controller by providing a Security Key Identifier and a Passphrase Security Key I dentifier A Security Key Identifier is a user supplied text label for the Passphrase The identifier helps you determine which Passphrase to enter during authentication for import of foreign secured SED drives Passphrase A Passphrase is a user supplied string that the controller
96. and you selected RAID 10 the user interface displays the following Select All Disks check box Enables you to select all the physical disks in all the enclosures Enclosure check box Enables you to select all physical disks in the enclosure K NOTE The Select All and Enclosure check boxes enable you to edit spans after selecting the physical disks that comprise them You can remove a span and re specify a span with different physical disks before proceeding Select Number of Disks per Span Enables you to select the number of disks in each span default 2 This option is available only on SAS controllers with firmware version 6 1 and later K NOTE This option is available only if you did not select Intelligent Mirroring on the Create Virtual Disk Step 1 of 4 page NOTE On a SAS controller with firmware version 6 1 and later RAID 10 supports only even number of disks per span and a maximum of 8 spans with 32 disks in each span Let us consider that the controller has three enclosures with six physical disks each total number of available disks 3 x 6 18 disks If you select four disks per span the controller will create four spans 18 disks 4 disks per span 4 spans The last two disks of the last enclosure will not be part of RAID 10 Click Continue when you have completed the disk selection If you want to cancel the virtual disk click Exit Wizard If you want to return to the previous screen and change your s
97. asks Yes Ye Yes Yes with 6 1 and Yes with 6 1 and Yes with 6 1 and Yes with 6 1 and Yes with 6 1 and Yes with 6 1 and Yes with 6 1 and Yes Yes with 6 1 and irmware ater irmware ater irmware ater irmware ater irmware ater irmware ater irmware ater irmware ater Yes s Yes Yes Yes with 6 1 and Yes with 6 1 and Yes with 6 1 and Yes with 6 1 and Yes with 6 1 and No irmware ater irmware ater irmware ater irmware ater irmware ater S Yes s Yes Yes Yes with 6 1 and Yes with 6 1 and Yes with 6 1 and Yes e dives e ides ides ies S S S Yes Yes with firmware Yes with firmware Yes Yes Yes Yes 5 1 x or greater 5 1 x or greater Yes Yes Yes Yes Yes Yes Yes Yes irmware ater irmware ater irmware ater E P Yes with 6 1 and Yes with 6 1 and E Yes with firmware Yes with firmware 6 1 and later 6 1 and later o S irmware ater irmware ater Table A 20 Battery Tasks Supported on the PERC 5 E PERC 5 i PERC 6 E PERC 6 1 PERC 6 1 PERC 6 I Modular and CERC 6 I Controllers Battery Task Name PERC 5 E PERC 5 i PERC 6 E PERC 6 1 Recondition Battery No fno e Yes Yes Connector Tasks PERC 6 1 Modular CERC 6 1 Io ono o stars uearn Gye ves ves ves ves vee o _ Fres ves ves no Table A 21 Connector Tasks Supported
98. atenation RAID 10 Concatenation PERC 4 IM RAID 0 RAID 1 RAID 1 RAID 5 RAID 5 N A PERC 3 Si and 3 Di i RAID 0 RAID 1 RAID 5 CERC SATA1 5 6ch i See Exceptions for Reconfiguring a Concatenated Virtual k For more information on the RAID levels see Choosing RAID Levels and Target RAID Level DO Add at least one additional disk RAID 1 Add a single disk D5 Add at least one additional disk DO With or without adding additional disks D5 Add additional disks S DO With or without adding additional disks D5 Add additional disks D1 Minimum number of physical disks required for the target RAID level must be available D 0 RAID 5 RAID 10 RAID 0 RAID 1 RAID 5 RAID 10 S j D 0 RAID 5 RAID 10 D 0 RAID 5 RAID 10 DI Minimum number of physical disks required for the target RAID level must be available Disk on PERC 3 Si 3 Di CERC SATA1 5 6ch and CERC RAID 0 SATA1 5 2s Controllers for more information RAID 0 RAID 5 RAID 10 RAID 0 RAID 1 RAID 5 RAID 1 D 0 RAID 5 Add at least one additional disk RAID 6 requires a minimum of 4 disks Reconfiguration from RAID O to RAID 6 requires at least 2 additional disks even when this exceeds the 4 disk minimum required by RAID 6 0 RAI RAI A RAI RAI RAI RAI With or without adding additional disk
99. background initialization o A check consistency In addition the Patrol Read suspends during heavy I O activity and resumes when the 1 0 is finished To set the Patrol Read mode Click the radio button for the Patrol Read mode setting that you want to select The possible settings are Auto Setting the mode to Auto initiates the Patrol Read task When the task is complete it automatically runs again within a specified period of time For example on some controllers the Patrol Read runs every four hours and on other controllers the Patrol Read runs every seven days The Patrol Read task runs continuously on the system starting again within the specified period of time after each iteration of the task completes If the system reboots while the Patrol Read task is running in Auto mode the Patrol Read restarts at zero percent 0 When the Patrol Read task is set to Auto mode you cannot start or stop the task Auto mode is the default setting K NOTE Refer to your controller documentation for more information on how often the Patrol Read task runs when in Auto mode Manual Setting the mode to Manual enables you to start and stop the Patrol Read when you want using the Start and Stop Patrol Read tasks Setting the mode to Manual does not initiate the Patrol Read task If you have started the Patrol Read and the system reboots while the Patrol Read is running in Manual mode the Patrol Read does not restart Disabled Se
100. been added to or removed from the connectors When you do a rescan on a controller object all storage attached to the controller is rescanned Performing a rescan causes the controller to recognize changes in the storage configuration such as adding or removing physical disks from a virtual disk or changing a RAID level You may want to rescan in the following situations To see new disks attached to the controller To make the operating system recognize a virtual disk To make Storage Management display a new virtual disk After expanding a virtual disk you may need to rescan the controller so that the virtual disk can use the additional disk space To update the status of an offline disk To display updated information in a clustered configuration after a failover of cluster resources NOTE For SCSI controller based systems if you want to rescan all controllers perform a Global Rescan If you want to rescan only the components attached to a particular controller perform a Rescan Controller NOTE Clicking the Refresh button in the right pane refreshes only the right pane To view the new physical disk in the left pane tree view click the system name displayed at the top of the left pane or select View gt Refresh from the browser s menu bar Related I nformation 1 I O and Reboot Requirements for Detecting Physical Disk Status Changes 1 Time Delay in Displaying Configuration Changes Time Delay i
101. butes and enables you to assign a dedicated hot spare to the virtual disk Do the following 1 Review the virtual disk attributes displayed in the Summary of Virtual Disk Attributes and the Selected Physical Disks sections of the screen These sections display the selections you made using Create Virtual Disk Express Wizard Step 1 of 2 and the physical disks that the Express Wizard selected If you need to change a selection click Go Back To Previous Page to return to Create Virtual Disk Advanced Wizard Step 3 of 4 K NOTE If you have selected the Create Secure Virtual Disk check box in Create Virtual Disk Advanced Wizard Step 1 of 4 then in the Summary of Virtual Disk Attributes a Secure Virtual Disk attribute is displayed with a value Yes 2 Review the Assign Dedicated Hot Spare section A hot spare is an unused backup physical disk that can be used to rebuild data from a redundant virtual disk See Protecting Your Virtual Disk with a Hot Spare for more information The Create Virtual Disk Advanced wizard displays a check box next to each physical disk that is suitable as a dedicated hot spare Select a Physical Disk check box if you want to assign a dedicated hot spare NOTE If you have selected the Create Secure Virtual Disk check box in Create Virtual Disk Advanced Wizard Step 1 of 4 then only secured physical disks are listed as candidates for hot spare The Physical Disk check box is not availab
102. by the PERC 5 E PERC 5 i PERC 6 E PERC 6 1 PERC 6 1 Modular and CERC 6 I Controllers Connector Task Name PERC 5 E PERC 5 1 PERC 6 E PERC 6 1 Physical Disk Tasks PERC 6 1 Modular CERC 6 I Table A 22 Physical Disk Tasks Supported by the PERC 5 E PERC 5 i PERC 6 E PERC 6 1 PERC 6 1 Modular and CERC 6 I Controllers Physical Disk Task Name PERC 5 E PERC 5 1 PERC 6 E Blink Unblink Yes Assign and Unassign Global Hot Spare Yes Prepare to Remove No No No PERC 6 1 No PERC 6 1 Modular No CERC 6 1 No Offline Online Initialize Rebuild Cancel Rebuild Remove Dead Disk Segments Format Disk Clear Cancel Clear wo lt lt v Cancel Replace Member Yes with firmware 6 1 and later Virtual Disk Tasks Table A 23 Virtual Disk Tasks Supported by the PERC 5 E PERC 5 i PERC 6 E PERC 6 1 PERC 6 I Modular and CERC 6 I Controllers Virtual Disk Task Name PERC 6 1 Modular 5 1 6 1 Spare BGI a e e i E later later later Virtual Disk Specifications Table A 24 Virtual Disk Specifications for the PERC 5 E PERC 5 i PERC 6 E PERC 6 1 PERC 6 I Modular and CERC 6 I Controllers Virtual Disk Specification PERC 5 E PERC 5 1 PERC 6 E PERC 6 I PERC 6 1 Modular CERC 6 1 Maximum Number of Virtual Disks per
103. canning the disk Examples of operations that may result in this alert are Consistency check 1 Rebuild Virtual disk format 1 IO 1 Patrol Read Recovering a physical disk bad block depends on the RAID level and state of the virtual disk If a virtual disk is redundant the controller can recover a bad block on a physical disk If a virtual disk is not redundant then the physical disk bad block results in a virtual disk bad block The following table describes some of the possible scenarios that may may not result in virtual disk bad blocks Table 11 2 Sample Scenarios For Virtual Disk Bad Blocks RAID Level State Scenario Result Virtual Disk RAID 0 Degraded One bad block ona he controller cannot regenerate data from peer disks as there is no redundancy physical disk his results in a virtual disk bad block RAID 5 Ready One bad block on a he controller regenerates data from peer disks and sends a Write to the bad physical disk ock The disk then re maps the Logical Block Addressing LBA to another hysical location The problem is resolved RAID 5 Degraded One bad block on a The controller cannot regenerate data from peer disks because one drive is physical disk missing This results in a virtual disk bad block RAID 5 Ready One bad block on two he controller cannot regenerate data from peer disks This results in a virtual disk physical disks at the same ad block location RAID 6 Partially degraded on
104. causes the Slow Initialize task to be cancelled for the entire virtual disk See Format and Initialize Slow and Fast Initialize and Considerations for Slow Initialize for more information To clear the physical disk 1 Review the physical disk that will be erased by the clear task Be sure that it does not contain necessary data and make a backup if necessary If you want to blink the physical disk click the Blink button 2 Click Clear when you are ready to erase all information on the physical disk To exit without clearing the physical disk click Go Back to Previous Page To locate this task in Storage Management 1 Expand the Storage tree object to display the controller objects 2 Expand a controller object 3 Expand a Connector object 4 Expand the enclosure or Backplane object 5 Select the Physical Disks object 6 Select Clear from the Available Tasks drop down menu of the physical disk you want to clear 7 Click Execute Revertible Hot Spare Does my controller support this feature See Supported Features Use the Revertible Hot Spare task to copy data back from a hot spare to a physical disk If the physical disk in a virtual disk fails the data on the failed disk is copied to the assigned hot spare If you replace the failed disk with a new physical disk and if you have enabled the revertible hot spare task the data is copied from the erstwhile hot spare to the new disk You can also use th
105. cellent Very Good Poor X x N 2 Critical information Medium sized N at least 2 transactional or data intensive uses N Number of physical disks X Number of RAID sets No RAID In Storage Management a virtual disk of unknown metadata is considered a No RAID volume Storage Management does not support this type of virtual disks These must either be deleted or the physical disk must be removed Storage Management allows Delete and Rename operation on No RAID volumes Back to Contents Page Back to Contents Page Troubleshooting Dell OpenManage Server Administrator Storage Management User s Guide Common Troubleshooting Procedures Virtual Disk Troubleshooting Specific Problem Situations and Solutions This section contains troubleshooting procedures for common situations as well as for specific problems Common Troubleshooting Procedures This section describes commands and procedures that can be used in troubleshooting Topics covered include 1 Cables Attached Correctly 1 System Requirements 1 Drivers and Firmware Isolate Hardware Problems 1 Rescan to Update Information on SCSI Controllers 1 Replacing a Failed Disk Recovering from Removing the Wrong Physical Disk 1 Resolving Microsoft Windows Upgrade Problems Cables Attached Correctly Verify that the power supply cord and adapter cables are attached correctly If the system
106. ck Go Back To Virtual Disk Page Z CAUTION Your virtual disk will no longer be redundant To 1 locate this task in Storage Management Expand the Storage tree object to display the controller objects 2 Expand a controller object 3 Select the Virtual Disks object 4 Select Unmirror from the Available Tasks drop down menu 5 Click Execute Related I nformation Rescan to Update Storage Configuration Changes 1 Time Delay in Displaying Configuration Changes Assign and Unassign Dedicated Hot Spare Does my controller support this feature See Supported Features A dedicated hot spare is an unused backup disk that is assigned to a single virtual disk When a physical disk in the virtual disk fails the hot spare is activated to replace the failed physical disk without interrupting the system or requiring your intervention For more information on hot spares including size requirements see Protecting Your Virtual Disk with a Hot Spare For considerations regarding RAID 10 and RAID 50 virtual disks created using the controller BIOS see Dedicated Hot Spare Considerations K NOTE The CERC SATA1 5 2s controller does not support dedicated hot spares To assign a dedicated hot spare 1 Select the disk in the Connector channel or port table that you want to use as the dedicated hot spare On some controllers more than one disk can be selected The disks you have selected as dedicated
107. closure Support on the PERC H800 PERC H700 Adapter PERC H700 Integrated and PERC H700 Modular Controllers Enclosure Support PERC H800 PERC H700 Adapter PERC H700 Integrated PERC H700 Modular Supported Features on the SAS 5 iR SAS 6 iR and PERC H200 Controllers This section identifies the controller supported features and whether or not an enclosure can be attached to the controller 1 Controller Tasks Battery Tasks 1 Connector Tasks Physical Disk Tasks Virtual Disk Tasks 1 Virtual Disk Specifications 1 Supported RAID Levels Read Write Cache and Disk Cache Policy 1 Enclosure Support For enclosure supported tasks see Enclosure and Backplane Features Controller Tasks Table A 37 Controller Tasks Supported on the SAS 5 iR SAS 6 iR and H200 Controllers Controller Task Name Enable Alarm Disable Alarm Quiet Alarm Test Alarm Reset configuration Set Rebuild Rate Set Background Initialization Rate Set Check Consistency Rate Set Reconstruct Rate Rescan Controller Create Virtual Disk Export Log File Clear Foreign Configuration Import Foreign Configuration Set Patrol Read Mode Start Patrol Read Stop Patrol Read Battery Tasks Table A 38 Battery Tasks Supported on the SAS 5 iR SAS 6 iR and H200 Controllers SAS 5 R SAS 6 iR PERC H200 fio Novo Io No Jo Io No _ wo Io
108. configure or add disks to the resulting concatenated virtual disks If you do a Split Mirror on a RAID 1 virtual disk the resulting concatenated virtual disks can be reconfigured back to a RAID 1 virtual disk After you have reconfigured to a RAID 1 virtual disk further reconfiguration may be possible See Number of Physical Disks per Virtual Disk and Exceptions to One Physical Disk Limitation for Concatenated Virtual Disks on PERC 3 Si 3 Di CERC SATA1 5 6ch and CERC SATA1 5 2s Controllers for information on restrictions associated with concatenated virtual disks on these controllers NOTE On the PERC 3 Si PERC 3 Di or CERC SATA1 5 6ch controllers this operation is not supported when using a dynamic virtual disk or for a RAID 1 virtual disk that is in a Failed Redundancy state NOTE On Linux a Split Mirror cannot be performed on a mounted virtual disk For this reason a Split Mirror cannot be performed on the boot drive Split a Mirror Click Split Mirror If you want to exit without splitting the mirror click Go Back To Virtual Disk Page A CAUTI ON Your virtual disk will no longer be redundant after performing a Split Mirror operation To locate this task in Storage Management Expand the Storage tree object to display the controller objects Expand a controller object Select the Virtual Disks object Select Split Mirror from the Available Tasks drop down menu Click Execute Related I nformation 1 Rescan
109. creens to save the new configuration 1 Reboot the PowerEdge server Enter the PowerEdge RAID Controller BIOS by pressing Ctrl M when prompted during the power on self test POST of the controller during the bootup sequence Select the Configure menu option and press Enter Select View Add Configuration and press Enter This will read the data on the physical disks to restore the RAID controller s proprietary configuration information Press Esc and save the new configuration when prompted Press the Esc key and save the new configuration when prompted Reboot the system Migrating SAS Virtual Disks to Another System The following describes how to migrate virtual disks and volumes from one system to another Shut down the system that the physical disks are being moved from If the receiving controller does not have a preexisting virtual disk configuration then shut down its server Place the physical disks into the new enclosure Start up the system connected to the receiving controller Use the Foreign Configuration Operations task to import the migrated virtual disks on the receiving controller K NOTE The Foreign Configuration Operations are not supported on PERC S100 and S300 controllers The migration is complete The virtual disk is now manageable through Storage Management Back to Contents Page Back to Contents Page Dell OpenManage Server Administrator Storage Management User s Gui
110. ction groups n disks together as one large virtual disk with a total capacity of n 2 disks Data is striped across the replicated mirrored pair disks When a disk fails the virtual disk continues to function The data is read from the surviving mirrored pair disk This feature provides the best failure protection read and write performance Your system must have at least four disks to use RAID 10 o Select RAID 50 to implement striping across more than one span of physical disks RAID 50 groups n s disks as one large virtual disk with a capacity of s n 1 disks where s is the number of spans and n is the number of disks within each span 0 Select RAID 60 to implement striping across more than one RAID 6 span RAID 60 Groups n s disks as one large virtual disk with a capacity of s n 2 disks where s is the number of spans and n is the number of disks within each span RAID 60 provides increased data protection and better read performance but slower write performance 2 Type a name for the virtual disk in the Name text box The virtual disk name can contain only alphanumeric characters as well as spaces dashes and underscores The maximum name length depends on the controller In most cases the maximum length is 15 characters The name cannot start with a space or end with a space It is recommended that you specify a unique name for each virtual disk If you have virtual disks with the same name it will be hard to differentiate th
111. d so on To complete their tasks controllers require special software known as firmware and drivers In order to function properly the controller must have the minimum required version of the firmware and drivers installed Storage Management supports different types of controllers If your system has a supported controller the controller is displayed by expanding the Storage object in the tree view You can select the controller to display tabs for executing controller tasks and viewing controller properties Different controllers have different characteristics in the way they read and write data and execute tasks It is helpful to understand these features to most efficiently manage your storage The following sections describe the supported controllers and their features RAID Controller Technology SCSI SATA ATA and SAS Storage Management supports RAID controllers using SCSI SATA ATA and SAS technology This section indicates which technology the supported RAID controllers use For more information on these controllers see Supported Features and the controller hardware documentation SCSI RAID Controllers The following RAID controllers use Small Computer System Interface SCSI technology PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di 4 1M 4e Si 4e Di 1 PERC 3 Si 3 Di CERC SATA RAID Controllers The following Cost Effective RAID Controller CERC controllers use Serial Advanced Technology Attachment SATA technology 1
112. de A Alert Messages 1 Assign and Unassign Dedicated Hot Spare 1 Assign and Unassign Global Hot Spare 1 Backplanes 1 Battery Delay Learn Cycle 1 Battery Properties and Tasks 1 Blink 1 Blink and Unblink Physical Disk 1 Blink and Unblink Virtual Disk 1 Cc Cancel Background Initialization 1 Cancel Check Consistency 1 Cancel Rebuild 1 2 Change Controller Properties 1 Change Policy 1 Check Consistency 1 Clear Foreign Configuration 1 Clear Physical Disk and Cancel Clear 1 Command Line Interface 1 Compatibility With Linux Utilities 1 Concatenation 1 Connector Health 1 Connector Properties and Tasks 1 Creating Virtual Disks 1 D Disable Alarm Controller 1 Disable Alarm Enclosure 1 Drivers and firmware 1 EMM Properties 1 Enable Alarm Enclosure 1 Enclosure and Backplane Health 1 Enclosure and Backplane Properties and Tasks 1 Enclosure Management 1 Enclosure Management Modules EMMs 1 Enclosure Temperature 1 Enclosure s EMM Firmware Version 1 Enclosures 1 Event Log viewing entries 1 Export Log 1 F Fan Properties 1 FAQs 1 Foreign Configuration Operations 1 Format Initialize Slow and Fast Initialize 1 H hot spare protection policy dedicated hot spare 1 global hot spare 1 resetting 1 Importing Foreign Configurations 1 Initialize 1 Installation Windows 2000 1 Installation Considerations for Storage Management 1 Integrated mirror 1 L Logical Connector Comp
113. disk by blinking the LED display on the physical disk that you intend to remove See Blink and Unblink Physical Disk for information on blinking the LED display Resolving Microsoft Windows Upgrade Problems If you upgrade the Microsoft Windows operating system on a server you may find that Storage Management no longer functions after the upgrade The installation process installs files and makes registry entries on the server that are specific to the operating system For this reason changing the operating system can disable Storage Management To avoid this problem you should uninstall Storage Management before upgrading If you have already upgraded without uninstalling Storage Management however you should uninstall Storage Management after the upgrade After you have uninstalled Storage Management and completed the upgrade reinstall Storage Management using the Storage Management install media You can download Storage Management from the Dell Support website at support dell com Virtual Disk Troubleshooting The following sections describe troubleshooting procedures for virtual disks 1 Replacing a Failed Disk that is Part of a Redundant Virtual Disk 1 Replacing a Failed Physical Disk in a RAID 1 on a CERC SATA1 5 2s 1 A Rebuild Does Not Work 1 A Rebuild Completes with Errors 1 Cannot Create a Virtual Disk 1 Virtual Disk Errors on Linux 1 Problems Associated With Using the Same P
114. disk if the disk is a member of a redundant virtual disk See Rebuilding Redundant Information Virtual disk expansion Virtual disk expansion enables you to expand the capacity of a virtual disk while it remains online by adding additional disks to the virtual disk This feature is also known as online capacity expansion OLCE See Virtual Disk Tasks RAID migration After creating a virtual disk you can change the RAID level See Reconfiguring Migrating Virtual Disks Moving physical and virtual disks to another controller The PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di 4e Si 4e Di and CERC ATA100 4ch controllers enable you to move physical and virtual disks from one controller to another See Moving Physical and Virtual Disks from One System to Another Read write and cache policies The manner in which a controller reads and writes data can vary The read write and cache policies have implications for data security and system performance See RAID Controller Read Write Cache and Disk Cache Policy Check consistency A check consistency determines the integrity of a virtual disk s redundant data When necessary this feature rebuilds the redundant information See Maintain Integrity of Redundant Virtual Disks Cluster Support Storage Management supports PERC 3 DC 4 DC and 4e DC controllers that have Microsoft Cluster Server MSCS enabled See Cluster enabled RAID Controllers
115. displays 2 8 0 6076 whereas Microsoft Windows Device Manager displays 2 8 0 6085 NOTE On some controllers Storage Management may not be able to obtain the driver version In this case Storage Management displays Not Applicable Minimum Required This property displays the minimum driver version that is required by Storage Management This property is only displayed if the Driver Version controller driver does not meet the minimum requirement The firmware and drivers listed in the Readme file refer to the minimum supported version for these controllers Later versions of the firmware and drivers are also supported See the Dell Support website at support dell com for the most recent driver and firmware requirements Number of This property displays the number of connectors the controller has Each connector can be attached to physical disks or an enclosure Connectors Depending on the controller type the connector can be either a SCSI channel or a SAS port Rebuild Rate The rebuild rate is the percentage of the system s resources dedicated to rebuilding a failed disk when a rebuild is necessary See Set Rebuild Rate for more information NOTE Revertible Hot Spare operation will have the same rebuild rate that you set here BGI Rate The background initialization BGI rate is the percentage of the system s resources dedicated to performing the background initialization of a virtual disk after it is created See Set Background Initial
116. dual EMM module to verify the firmware version SMART Thermal Shutdown Does my enclosure support this feature See Supported Features Enclosure management provides a feature which automatically shuts down the operating system the server and the enclosure when the enclosure s temperature reaches dangerous extremes The temperature when shutdown occurs is determined by the enclosure temperature probe s Minimum Failure Threshold and the Maximum Failure Threshold These thresholds are default settings that cannot be changed K NOTE Thermal shutdown does not apply to the Ultra SCSI Ultra2 SCSI Ultra160 SCSI LSI 1020 LSI 1030 and LSI PCI e U320 controllers Thermal Shutdown for the PowerVault 20xS and PowerVault 21xS Enclosures For the PowerVault 20xS and PowerVault 21xS enclosures the operating system shuts down and the server powers off when the enclosure reaches 0 degrees Celsius or 50 degrees Celsius After the server powers off the enclosure also powers off Thermal Shutdown for the PowerVault 220S and PowerVault 221S Enclosures For the PowerVault 220S and PowerVault 2215S the operating system and server shut down at 0 degrees Celsius or 50 degrees Celsius if you have not implemented Channel Redundancy and Thermal Shutdown If you have implemented channel redundancy enabled smart thermal shutdown using the command line interface CLI then only the enclosure shuts down at 0 degrees Celsius or 50 degrees Celsius This
117. e Monitoring Disk Reliability on RAID Controllers For information on replacing the physical disk see Replacing a Physical Disk Receiving SMART Alerts You may also want to review the Alert Log to see whether the physical disk has generated alerts pertaining to a SMART predictive failure These alerts can assist you in identifying the cause of the SMART alert The following alerts may be generated in response to a SMART alert 2094 2106 2107 2108 2109 2110 2111 For information on Alert Messages see the Dell OpenManage Server Administrator Messages Reference Guide on the Dell Support website at support dell com manuals NOTE On replacing a SMART error drive with a good drive on PERC4 IM controllers it is necessary to perform a rescan operation on the controller for Storage Management to display the correct status of the newly inserted drive This property displays the progress of an operation being performed on the physical disk For example if the physical disk is being rebuilt then a value of 52 indicates that the rebuild is 52 complete This property is only displayed when an operation is being performed on the physical disk This property displays the technology that the physical disk is using Possible values are SCSI Small Computer System Interface SAS Serial Attached SCSI SATA Serial Advanced Technology Attachment SATA This property displays the media type of the physical disk The possible v
118. e The direct I O setting does not override the cache policy settings Direct I O is also the default setting K NOTE Cache policy is not supported on any controller that does not have a battery Disk Cache Policy Does my controller support this feature See Supported Features Set the physical disk caching policy of all members of a Virtual Disk by enabling the Disk Cache Policy When this feature is enabled the physical disk writes data to the physical disk cache before writing it to the physical disk Because it is faster to write data to the cache than to a disk enabling this feature can improve system performance The cache policies are 1 Enabled Specifies that the disk cache policy is enabled 1 Disabled Specifies that the disk cache policy is disabled K NOTE On PERC 5 and PERC 6 controllers for virtual disks based on SATA drives the default Disk Cache Policy is Enabled for virtual disks based on SAS drives it is Disabled K NOTE For SAS 6i R and PERC H200 family of controllers disk cache policy setting is available only after creating the virtual disk Cluster enabled RAID Controllers This section applies to 3 DC 4 DC and 4e DC controllers Storage Management supports PERC 3 DC 4 DC and 4e DC controllers that have Microsoft Cluster Server MSCS enabled A cluster refers to two or more servers that are connected so that their resources can be shared and accessed as if the clustered servers we
119. e alerts generated for these virtual disks K NOTE The CERC SATA1 5 2s controller does not allow you to specify a name for concatenated virtual disks The concatenated virtual disk will be created with a default name 3 Type the size for the virtual disk in the Size text box The virtual disk size must be within the minimum and maximum values displayed near the Size text box For information on how the maximum virtual disk size is calculated see Calculation for Maximum Virtual Disk Size and the Create Virtual Disk Express Wizard In some cases the virtual will be slightly larger than the size you specify The Create Virtual Disk wizard may round up the size of the virtual disk to avoid rendering a portion of the physical disk space unusable NOTE When creating a virtual disk on the CERC SATA1 5 2s controller or on a controller that is in a cluster configuration you must specify the maximum virtual disk size 4 Click Continue to go to the next screen or Exit Wizard if you want to cancel To locate this task in Storage Management 1 Expand the Storage tree object to display the controller objects 2 Expand a controller object 3 Select the Virtual Disks object 4 Click Go To Create Virtual Disk Wizard Create Virtual Disk Express Wizard Step 2 of 2 Does my controller support this feature See Supported Features This screen displays the virtual disk attributes and enables you to assign a dedicated hot spare to th
120. e Di CERC ATA100 4ch PERC 5 E PERC 5 i PERC 6 E PERC 6 1 and CERC 6 I controller you can assign physical disks of different sizes to a virtual disk When you have fully consumed a smaller physical disk with a virtual disk however any portion of larger physical disks that are not consumed by the virtual disk become unusable Therefore there is no data on the unused portion of a larger disk that needs to be rebuilt A redundant virtual disk will also be either striped or mirrored in equal portions across its member physical disks The amount of data requiring a rebuild will therefore not be larger than the smallest physical disk A RAID 10 or 50 virtual disk may include spans that have physical disks of different sizes In this case you should identify the span that has the largest small physical disk The hot spare should be large enough to rebuild this physical disk For example if one span has three physical disks that are 60 MB 60 MB and 40 MB and another span has physical disks that are 60 MB 60 MB and 50 MB then the hot spare must be 50 MB or larger A dedicated hot spare can only be assigned to the set of virtual disks that share the same physical disks A global hot spare is assigned to all redundant virtual disks on the controller A global hot spare must be the same size or larger as the smallest physical disk included in any virtual disk on the controller After you have assigned a global hot spare any new virtual disks created on
121. e One bad block ona he controller regenerates data from peer disks and sends a Write to the bad failed missing physical disk physical disk ock The disk then re maps the LBA to another physical location The problem is esolved RAID 6 Degraded two One bad block on a The controller cannot regenerate data from peer disks This results in a virtual disk failed missing physical disk physical disk bad block RAID 6 Ready One bad block ona he controller regenerates data from peer disks and sends a Write to the bad physical disk ock The disk then re maps the Logical Block Addressing LBA to another hysical location The problem is resolved Recommendations Storage Management provides the ability to clear the bad block warnings Dell recommends the following to clear bad blocks 1 Perform a backup of the virtual disk with the Verify option selected One of the two following scenarios can occur o Backup operation fails on one or more files In this case restore the file from a previous backup After restoring the file proceed to step 2 o Backup operation completes without error This indicates that there are no bad blocks on the written portion of your virtual disk If you still receive bad block warnings the bad blocks are in a non data area Proceed to Step 2 2 Run Patrol Read and check the system event log to ensure that no new bad blocks are found If bad blocks still exist proceed to step
122. e Revertible Hot Spare task to copy data from a physical disk to the hot spare on a predictive failure event If Revertible Hot Spare is enabled and the physical disk is SMART enabled the controller firmware automatically starts copying data from the SMART enabled disk in the virtual disk to the hot spare K NOTE To use the Revertible Hot Spare task you should have assigned a hot spare to the virtual disk K NOTE If the disk is not SMART enabled or if the Auto Replace on Predictive Failure option is disabled the failed disk will not be replaced automatically To enable Revertible Hot Spare 1 On the Change Controller Properties page enable Revertible Hot Spare and Auto replace on predictive failure 2 Click Apply Changes To locate this task in Storage Management 1 Expand the Storage tree object to display the controller objects 2 Select a controller object on which you want to enable the revertible hot spare task and select the Information Configuration tab 3 From the Controller Task drop down menu select Change Controller Properties and click Execute K NOTE The Rebuild rate for Revertible Hot Spare will be the same as defined for the controller Instant Secure Erase Does my controller support this feature See Supported Features Use the Instant Secure Erase task to erase a secured physical disk This task is available for Unconfigured SED drive Foreign configured secured drives Unconfigu
123. e and Backplane Tasks Enable Alarm Disable Alarm Set Temperature Probe Values PowerVault MD1220 Set Asset Data includes asset tag and asset name No No faincencosure n no Enclosure and Backplane Support for Smart Thermal Shutdown Table A 61 Enclosure Support for Smart Thermal Shutdown Smart Thermal PowerVault 20xS PowerVault 220S PowerVault MD1000 PowerVault PowerVault MD1200 PowerVault Shutdown and 21xS and 221S Storage MD1120 Storage MD1220 Smart Thermal Yes Shutdown Table A 62 Backplane Support for Smart Thermal Shutdown Smart Thermal Shutdown RNN Smart Thermal Shutdown No fno Maximum Supported Configuration Table A 63 Maximum Supported Configuration for SAS and SCSI Controllers Maximum Supported Configuration SAS MD 1000 MD 1120 SAS MD 1200 MD 1220 Enclosures per connector c Total numbers of enclosures on a server axbxc Back to Contents Page Back to Contents Page Determining the Health Status for Storage Components Dell OpenManage Server Administrator Storage Management User s Guide Health Status Rollup Enclosure Power Supply Failed or Power Connection Removed Health Status Rollup Battery is Charging or Dead Health Status Rollup Physical Disks in a Virtual Disk are Failed or Removed Health Status Rollup One Enclosure Fan is Failed Health Status Rollup Physical Disks in a Virtual Disk are
124. e channel it may be possible to configure a virtual disk that is channel redundant See Channel Redundancy and Thermal Shutdown for more information Depending on the RAID level you selected and the virtual disk size this screen displays the disks and connectors channels or ports available for configuring the virtual disk NOTE If you have selected the Create Secure Virtual Disk check box in Create Virtual Disk Advanced Wizard Step 1 of 4 then only secured physical disks are displayed Else both secured as well as unsecured physical disks are displayed The following is an example of what might be displayed Connector 0 The Connector section of the screen displays the controller s connectors and the disks attached to each connector Select the disks to be included in the virtual disk In this example the controller has a single connector with five disks Physical disk 0 0 Physical disk 0 1 Physical disk 0 2 Physical disk 0 3 Physical disk 0 4 Physical Disks Selected The Physical Disks Selected section of the screen displays the disks you have chosen In this example two disks are selected 1 Physical disk 0 0 Physical disk 0 1 Each RAID level has specific requirements for the number of disks that must be selected RAID 10 RAID 50 and RAID 60 also have requirements for how many disks must be included in each stripe or span If the controller is a SAS controller with firmware versions 6 1 and later
125. e icons represent the severity or health of the storage component Normal OK Warning Non critical Critical Fatal See Storage Component Severity for more information This property displays the name of the physical disk The name is comprised of the connector number followed by the disk number This property displays the current state of the physical disk Ready The physical disk is functioning normally If the disk is attached to a RAID controller Ready state indicates that the disk is available to be used by a virtual disk When the physical disk is used in a virtual disk the state changes to Online Online The physical disk is part of a virtual disk and is functioning normally See Online and Offline for more information Degraded The physical disk has encountered a failure and is operating in a degraded state Failed The physical disk has encountered a failure and is no longer functioning This state is also displayed when a physical disk that is part of a redundant virtual disk has been taken offline or deactivated See Online and Offline for more information Offline The physical disk has failed or contains dead segments Check to see whether the Remove Dead Segments task appears on the physical disk drop down menu If it does perform a Rescan Controller and then do a Remove Dead Segments for the physical disk If the Remove Dead Segments task is not displayed then the physical disk cannot be
126. e information Missing The controller is missing a battery Power Low The battery charge is low and the battery needs to be reconditioned Failed The battery has failed and needs to be replaced Unknown The battery state is not available Predicted This property displays the charge capacity of the battery Possible values are Capacity Status Ready The battery can be charged to full capacity Failed The battery cannot be charged and needs to be replaced Unknown The battery is completing a Learn cycle The charge capacity of the battery cannot be determined until the Learn cycle is complete Learn State This property displays the current status of the battery Learn cycle Possible values are Active The Learn cycle is currently in progress Failed The Learn cycle initiated but then terminated without completing successfully Timed out The Learn cycle is timed out Requested The Learn State displays Requested when either the controller firmware or a user attempts to initiate a Learn cycle while the battery is charging The battery must be fully charged before the Learn cycle begins The Learn State displays Requested until the battery is fully charged When the battery is fully charged the Learn cycle will begin Idle The Learn cycle is currently not active Due The Learn cycle is due Learn Mode Auto Storage Management will perform an automatic learn cycle based on the time you set
127. e rebuild may take an unusual amount of time to complete See Set Rebuild Rate for more information 1 The rebuild was cancelled Another user can cancel a rebuild that you have initiated A Rebuild Completes with Errors This section applies to PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di 4e Si 4e Di and CERC ATA100 4ch controllers In some situations a rebuild may complete successfully while also reporting errors This may occur when a portion of the disk containing redundant parity information is damaged The rebuild process can restore data from the healthy portions of the disk but not from the damaged portion When a rebuild is able to restore all data except data from damaged portions of the disk it will indicate successful completion while also generating alert 2163 For information on Alert Messages see the Dell OpenManage Server Administrator Messages Reference Guide on the Dell Support website at support dell com manuals The rebuild may also report sense key errors In this situation take the following actions to restore the maximum data possible 1 Back up the degraded virtual disk onto a fresh unused tape If the backup is successful If the backup completes successfully then the user data on the virtual disk has not been damaged In this case you can continue with step 2 If the backup encounters errors If the backup encounters errors then the user data has been damaged and cannot be recovered from
128. e the Dell OpenManage Server Administrator Messages Reference Guide on the Dell Support website at support dell com manuals Considerations for Hot Spares on PERC 3 Si 3 Di CERC SATA1 5 6ch S100 and S300 Controllers For the PERC 3 Si 3 Di CERC SATA1 5 6ch S100 and S300 controllers a hot spare is assigned to a virtual disk When a physical disk fails only the portion of the physical disk containing the virtual disk is rebuilt onto the hot spare Data or space on the physical disk not included in the virtual disk will not be rebuilt On the PERC 3 Si 3 Di CERC SATA1 5 6ch S100 and S300 controllers individual physical disks may be included in more than one virtual disk Assigning a portion of a physical disk to a virtual disk does not preclude the remaining portion of the physical disk from being used by other virtual disks Only the virtual disks to which the hot spare is assigned will be rebuilt When using Storage Management a disk that is assigned as a hot spare on a PERC 3 Si 3 Di CERC SATA1 5 6ch S100 and 300 controller cannot be used as a member of a virtual disk NOTE When using the BIOS on a PERC 3 Si 3 Di or CERC SATA1 5 6ch controller it may be possible to create a hot spare from a physical disk that is also used in a virtual disk To avoid confusion and maximize data protection Storage Management does not allow a physical disk to be both a hot spare and a member of a virtual disk When assigning a hot spare Stor
129. e virtual disk Do the following 3 Review the virtual disk attributes displayed in the Summary of Virtual Disk Attributes and the Selected Physical Disks sections of the screen These sections display the selections you made using Create Virtual Disk Express Wizard Step 1 of 2 and the physical disks that the Express Wizard selected If you need to change a selection click Go Back To Previous Page to return to Create Virtual Disk Express Wizard Step 1 of 2 NOTE If a physical disk is receiving a SMART alert it cannot be used in a virtual disk For more information on SMART alerts see Monitoring Disk Reliability on RAID Controllers Review the Assign Dedicated Hot Spare section A hot spare is an unused backup physical disk that can be used to rebuild data from a redundant virtual disk See Protecting Your Virtual Disk with a Hot Spare for more information Select the Physical Disk check box if you want to assign a dedicated hot spare The Physical Disk check box is not available if the controller does not have a physical disk that is a suitable hot spare for the virtual disk you are creating For example the available physical disks may be too small to protect the virtual disk If the Physical Disk check box is not available you may need to specify a smaller virtual disk use a different RAID level or change the disk selection using the Create Virtual Disk Advanced wizard NOTE By default a secure virtual disk
130. e when the Storage or lower level tree view object is selected See Storage Object for more information The online help is available as Context sensitive Help Each Storage Management screen has a Help button Clicking the Help button displays context sensitive online help that describes the contents of the displayed screen Table of Contents The help screens for the context sensitive Help button help contain links to the online help s Table of Contents To access the Table of Contents first click a Storage Management Help button to display a help screen Next click the Go to Table of Contents for Storage Management Online Help link to display the Table of Contents This link is displayed at the top and bottom of each help screen Use the Table of Contents to access all topics covered in the online help Common Storage Tasks This section provides links to information describing commonly performed storage tasks Create and configure virtual disks RAID configuration For more information see o Create Virtual Disk Express Wizard Step 1 of 2 This sub section describes using the Express Wizard to create a virtual disk Using the Express Wizard is the quickest method for creating a virtual disk The Express Wizard is appropriate for novice users o Create Virtual Disk Advanced Wizard Step 1 of 4 This sub section describes using the Advanced Wizard to create a virtual disk The Advanced Wizard requires a good knowl
131. ead process is disabled For more information about Patrol Read see Set Patrol Read Mode Start and Stop Patrol Read Patrol Read State This property displays the current state of the Patrol Read process Possible values are Ready The Patrol Read process is enabled and will run when next scheduled or when manually initiated Active The Patrol Read process is currently running Stopped The Patrol Read has been stopped For more information about Patrol Read see Set Patrol Read Mode Patrol Read This property displays the number of Patrol Read iterations Iterations For more information about Patrol Read see Set Patrol Read Mode Cluster Mode This property indicates whether the controller is part of a cluster configuration SCSI Initiator ID This property displays the SCSI ID of a SCSI controller The default value is usually 7 You can change the default value in the BIOS In cluster mode the value is 6 or 7 The SCSI ID is not displayed on the PERC 4 IM PERC 3 Si and 3 Di controllers Use the BIOS on these controllers to identify the SCSI ID Controller Tasks Enables you to configure and manage the controller For more information see Controller Tasks Controller Tasks Do the following to execute a controller task 1 Expand the Storage tree object to display the controller objects 2 Select a controller object 3 Select the Information Configuration subtab 4 Select a tas
132. ect 1 0 Enclosure Support Table A 9 Enclosure Support on the PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4 Di 4e Si 4e Di 4e DC CERC ATA100 4ch and 4 1M Controllers Enclosure Support PERC PERC PERC PERC PERC PERC PERC PERC PERC CERC ATA 3 SC 3 DC 3 QC 4 SC 4 DC 4 DI 4e SI 4e DI 4e DC 100 4ch Can an enclosure be attached Yes Yes Yes Yes Yes Yes Yes Yes Yes to this controller Supported Features on the PERC 3 Si 3 Di CERC SATA1 5 2s and CERC SATA1 5 6ch Controllers This section identifies the controller supported features and whether or not an enclosure can be attached to the controller 1 Controller Tasks 1 Battery Tasks 1 Connector Tasks Physical Disk Tasks 1 Virtual Disk Tasks Virtual Disk Specifications 1 Supported RAID Levels Read Write and Disk Cache Policy 1 Enclosure Support For enclosure supported tasks see Enclosure and Backplane Features Controller Tasks Table A 10 Controller Tasks Supported by the PERC 3 Si 3 Di CERC SATA1 5 2s and CERC SATA1 5 6ch Controllers Controller Task Name PERC 3 Si PERC 3 Di CERC SATA 1 5 2s CERC SATA 1 5 6ch Enable Alarm Disable Alarm Quiet Alarm Test Alarm Reset configuration Yes Yes Set Rebuild Rate Set Background Initialization Rate Set Check Consistency Rate Set Reconstruct Rate Rescan Controller Yes Yes Create Virtual Disk Yes Yes Export Log File
133. ector Status Component status is indicated by the severity A component with a Warning or Critical Failure status requires immediate attention to avoid data loss if possible A component s status may indicate the combined status of the component and its lower level objects See Determining the Health Status for Storage Components for more information It may be useful to review the Alert Log for events indicating why a component has a Warning or Critical status For additional troubleshooting information see Troubleshooting Component Status Normal OK The component is working as expected Warning Non critical A probe or other monitoring device has detected a reading for the component that is above or below the acceptable level A The component may still be functioning but it could fail The component may also be functioning in an impaired state Data loss is possible Critical Failure Error The component has either failed or failure is imminent The component requires immediate attention and may need to be replaced Data loss may have occurred Connector Information For information on the connector see the following topics 1 Connectors Connector Properties and Tasks Connector Components For information on attached components see the following topic 1 Enclosures and Backplanes Connector Properties and Tasks Use this window to view information about the connector and execute connector task
134. ed This ensures that a healthy disk resides in a slot that the controller firmware assumes is a hot spare Back to Contents Page Back to Contents Page Setting Hot Spare Protection Policy Dell OpenManage Server Administrator Storage Management User s Guide Dedicated Hot Spare Protection Policy Global Hot Spare Protection Policy Considerations for Hot Spare Protection Policy Considerations for Enclosure Affinity The Hot Spare Protection Policy is supported only on Serial Attached SCSI SAS controllers The Hot Spare Protection Policy provides you with a higher protection level for the virtual disks by enabling you to specify the number of dedicated global hot spares to be assigned to the virtual disks controller You can also specify the severity levels for the protection policy Dell OpenManage Storage Management sends alerts when the hot spare protection policy is violated You can determine the hot spare protection policy best suited for your environment however Storage Management does not provide a default policy Dedicated Hot Spare Protection Policy Property Definition RAID Layout The RAID level s for which you want to configure the hot spare protection policy Minimum Number of Disks The minimum number of physical disks to be assigned as dedicated hot spares for the selected RAID level s Severity Level The severity level you want to assign to the generated alert if this p
135. ed from the remaining virtual disks To maintain data protection you will need to add a new hot spare and assign it to the other virtual disks K NOTE The Assign and Unassign Dedicated Hot Spare command is not available on the CERC SATA1 5 2s controller Global Hot Spare Considerations on a SAS 6 iR The SAS 6 iR controller enables you to assign two global hot spares The controller firmware remembers the hot spare assignment even after the physical disks that you assigned as hot spares have been removed In other words in the case of a disk removal the firmware may assume that a hot spare is present when it is not In this case the firmware may prevent you from assigning a new global hot spare as the firmware assumes that a global hot spare is already assigned When a physical disk fails in a redundant virtual disk the failed disk is rebuilt onto the hot spare In this case the controller firmware reassigns the slot containing the failed disk as the hot spare In this circumstance a disk not previously assigned as a global hot spare becomes a hot spare through failure or removal To ensure that the controller firmware always has a healthy physical disk as a global hot spare do the following When removing a physical disk that is assigned as a global hot spare unassign the hot spare before removal and reassign another physical disk as the global hot spare Immediately replace any physical disk that has failed or been remov
136. ed when applicable are the only possible modes in these circumstances This property displays the version of the enclosure firmware This property displays the enclosure s service tag number This number is required when talking to Dell support You can use this number to identify a specific enclosure in your environment by matching this number with the number on the service tag affixed to the enclosure For example if you have multiple enclosures and one of them experiences a failure you can use the service tag number to identify which enclosure has failed This property displays the asset tag information for the enclosure You can change this property using the Set Asset Data task This property displays the name assigned to the enclosure You can change this property using the Set Asset Data task This property displays the part number of the enclosure s backplane This property displays the SAS address of the SAS backplane This property displays the part number of the enclosure s split bus module A split bus is indicated by a single triangle symbol on the back of the enclosure Enclosure Part This property displays the part number of the enclosure Number Enclosure Alarm This property displays whether the enclosure s alarm is enabled or disabled Enclosure Tasks Do the following to execute a drop down menu enclosure task 1 Expand the Storage tree object to display the controller objects 2 Expand a contr
137. edge of RAID levels and hardware and is appropriate for advanced users o Virtual Disks This sub section provides detailed information regarding virtual disk management This information includes controller specific considerations that affect virtual disk creation and management o Understanding RAID Concepts This sub section describes basic storage concepts including What Is RAID Organizing Data Storage for Availability and Performance and Choosing RAID Levels and Concatenation Assign a hot spare to the virtual disk When a virtual disk uses a redundant RAID level then you can assign a hot spare backup physical disk to rebuild data if a physical disk in the virtual disk fails For more information see o Protecting Your Virtual Disk with a Hot Spare This section describes hot spares and includes controller specific information Perform a Check Consistency The Maintain Integrity of Redundant Virtual Disks task verifies the accuracy of a virtual disk s redundant data Reconfigure a Virtual Disk You can add physical disks to a virtual disk to expand the virtual disk s capacity You can also change RAID levels For more information see Virtual Disk Task Reconfigure Step 1 of 3 Back to Contents Page Back to Contents Page Protecting Your Virtual Disk with a Hot Spare Dell OpenManage Server Administrator Storage Management User s Guide o Understanding Hot Spares Con
138. el Rebuild task to cancel a rebuild while it is in progress Change Policy Does my controller support this feature See Supported Features Use the Change Policy task to change a virtual disk s read write or cache policy Changes to the read write and cache policy only apply to the virtual disk that you have selected This task does not change the policy for all virtual disks on the controller See RAID Controller Read Write Cache and Disk Cache Policy for more information You can also modify the physical disk cache policy using this command Replace Member Disk Does my controller support this feature See Supported Features Use the Replace Member Disk task to copy data from a physical disk which is a member of a virtual disk to another physical disk by providing the Replace Member Configuration option You can initiate multiple copies of data from different array groups See Virtual Disk Task Replace Member Disk Step 1 of 2 for more information Clear Virtual Disk Bad Blocks Does my controller support this feature See Supported Features Use the Clear Virtual Disk Bad Blocks task to clear bad blocks on your virtual disk This feature is only applicable to PERC H700 and PERC H800 family of controllers Secure Virtual Disk Does my controller support this feature See Supported Features Use the Secure Virtual Disk task to secure an unsecured virtual disk This feature is only applicable to controlle
139. elections click Go Back To Previous Page Create Virtual Disk Advanced Wizard Step 3 of 4 Does my controller support this feature See Supported Features This screen enables you to select attributes for the virtual disk These attributes include the name size and read write and cache policy Depending on the controller and your previous virtual disk selections the items displayed on this screen can vary Do the following 1 Type the name of the virtual disk in the Name text box The virtual disk name can contain only alphanumeric characters as well as spaces dashes and underscores The maximum name length depends on the controller In most cases the maximum length is 15 characters The name cannot start with a space or end with a space It is recommended that you specify a unique name for each virtual disk If you have virtual disks with the same name it will be hard to differentiate the alerts generated for these virtual disks NOTE The CERC SATA1 5 2s controller does not allow you to specify a name for concatenated virtual disks The concatenated virtual disk will be created with a default name 2 The Size text box displays the default size of the virtual disk depending upon the RAID configuration you selected You can specify a different size The virtual disk size must be within the minimum and maximum values displayed near the Size text box In some cases the virtual will be slightly larger than the size you specify
140. ement Modules EMM firmware version The State and Progress properties indicate a component s current activity For example an offline physical disk displays the Offline status while the Progress property displays how close to completion an operation such as a rebuild is The following sections describe the properties for each component 1 Storage Information and Global Tasks 1 Controller Properties and Tasks Battery Properties and Tasks 1 Connector Properties and Tasks Enclosure and Backplane Properties and Tasks 1 Physical Disk Properties and Tasks 1 EMM Properties Fan Properties 1 Power Supply Properties Temperature Probe Properties and Tasks Virtual Disk Properties and Tasks Alerts or Events Storage activity generates alerts or events that are displayed in the Alert Log Some alerts indicate normal activity and are displayed for informational purposes only Other alerts indicate abnormal activity which should be addressed immediately For more information about alerts and their corrective actions see the Dell OpenManage Server Administrator Messages Reference Guide on the Dell Support website at support dell com manuals Monitoring Disk Reliability on RAID Controllers Storage Management supports Self Monitoring Analysis and Reporting Technology SMART on physical disks that are SMART enabled SMART performs predictive failure analysis on e
141. ent tree view even after doing a rescan or a reboot In this case do the following to redisplay the disk in the Storage Management tree view 1 Manually remove and then replace the physical disk 2 Rescan the controller or reboot the system Receive a Bad Block Alert with Replacement Sense or Medium Error The following alerts or events are generated when a portion of a physical disk is damaged 1 2146 1 2147 1 2148 1 2149 1 2150 This damage is discovered when the controller performs an operation that requires scanning the disk Examples of operations that may result in these alerts are as follows Consistency check 1 Rebuild 1 Virtual disk format 1 1 0 If you receive an alerts 2146 through 2150 as the result of doing a rebuild or while the virtual disk is in a degraded state then data cannot be recovered from the damaged disk without restoring from backup If you receive alerts 2146 through 2150 under circumstances other than a rebuild then data recovery may be possible The following describes each of these situations Alerts 2146 through 2150 Received during a Rebuild or while a Virtual Disk is Degraded Do the following if you receive alerts 2146 through 2150 during a rebuild or while the virtual disk is in a degraded state 1 Replace the damaged physical disk 2 Create a new virtual disk and allow the virtual disk to completely resynchronize While the resynchronization is in progress the status of
142. ependent on the speed of the disk the capable speed of the controller the current speed of the controller on that connector and the speed of the EMM Enclosure Management Module on the enclosure Capable This property displays the highest possible speed that the device can transfer data Speed Manufacture This property displays the day of the month during which the physical disk was manufactured Day Manufacture This property displays the week of the year during which the physical disk was manufactured Week Manufacture This property displays the year that the physical disk was manufactured Year SAS Address This property displays the SAS address of the physical disk The SAS address is unique to each SAS disk Physical Disk Tasks Do the following to execute a physical disk task 1 Expand the Storage tree object to display the controller objects 2 Expand a controller object 3 Expand a Connector object 4 Expand the enclosure or Backplane object 5 Select the Physical Disks object 6 Select the Information Configuration subtab 7 Select a task from the Available Tasks drop down menu 8 Click Execute 74 NOTE Different controllers support different features For this reason the tasks displayed on the Tasks drop down menu can vary depending on which controller is selected in the tree view If no tasks can be performed because of controller or system configuration
143. eplaced Data loss may have occurred Controller I nformation For information on the controller see the following topics 1 Controllers Controller Properties and Tasks Controller Components For information on attached components see the following topics 1 RAID Controller Batteries Firmware Driver Versions 1 Connectors K NOTE If you have connected the enclosure in Redundant path mode the connectors are represented as Logical Connector Virtual Disks Controller Properties and Tasks Use this window to view information about the controller and execute controller tasks Controller Properties The controller properties can vary depending on the model of the controller Controller properties may include Property Definition Status These icons represent the severity or health of the storage component Normal OK R Warning Non critical Critical Fatal See Storage Component Severity for more information ID This property displays the controller ID assigned to the controller by Storage Management Storage Management numbers the controllers attached to the system starting with zero This number is the same as the controller ID number reported by the omreport Command For information on Command Line Interface see the Dell OpenManage Server Administrator Command Line Interface User s Guide on the Dell Support website at support dell com manuals Name This pro
144. eplacing a Physical Disk 1 Rescan computer s storage objects 1 Rescan Connector 1 Rescan Controller 1 Resolving Windows 2000 Upgrade Problems 1 Revertible Hot Spare 1 S S M A R T alerts 1 Set Asset Data 1 Set Background Initialization Rate 1 Set Check Consistency Rate 1 Set Patrol Read Mode 1 Set Rebuild Rate 1 Set Reconstruct Rate 1 Set Temperature Probe Value 1 SMART alerts 1 SNMP support configuring 1 SNMP traps 1 Span 1 Span Edit 1 Split Mirror 1 SSD 1 2 3 Start and Stop Patrol Read 1 Start Learn Cycle 1 Storage Component Severity 1 Stripe element 1 Stripe element size 1 Stripe size 1 Striping 1 Supported Controllers 1 Supported Enclosures 1 Supported Features 1 Syntax for Command Elements 1 T Temperature Probe Properties and Tasks 1 Temperature Probes PERC 2 SC 2 DC 3 SC 3 DC 3 QC 4 SC 4 DC 4 Di 1 Test Alarm Controller 1 Troubleshooting 1 common problems 1 procedures 1 U Understanding Hot spares PERC 3 QC 3 DC 4 Di 1 Unmirror 1 Updating disk information 1 Upgrading from Windows NT 1 User Privileges 1 Using the Command Line Interface 1 Using the Graphical User Interface 1 vV Viewing SNMP traps 1 Virtual Disk Advanced Wizard 1 Virtual Disk Bad Block definition 1 Recommendations 1 Virtual Disk Express Wizard 1 Virtual Disk Properties 1 Virtual Disk Task Change Policy 1 Delete 1 Reconfigure 1 Rename 1 Replace Member Disk 1 Virtual Dis
145. er and Passphrase You are prompted to authenticate with the current Passphrase Ensure you read the note on the importance of Passphrase and consequences of not saving the same before applying the changes When you change the Security Key the existing configuration on this controller is updated to use the new Security Key If you have removed any of the secured drives previously you must authenticate with the old Passphrase to import the secured drives If you delete the Security Key you cannot create secured virtual disks and all secured unconfigured self encrypting drives are erased However deleting a Security Key does not affect security or data in foreign disks Back to Contents Page Back to Contents Page Enclosures and Backplanes Dell OpenManage Server Administrator Storage Management User s Guide Backplanes Set Asset Data Enclosures Set Temperature Probe Values SMART Thermal Shutdown EMM Properties Changing the Mode on PowerVault 220S and PowerVault 221S Enclosures Fan Properties Enclosure Management Power Supply Properties Enclosure and Backplane Health Temperature Probe Properties and Tasks Enclosure and Backplane Properties and Tasks Physical disks can be contained in an enclosure or attached to the system s backplane An enclosure is attached to the system externally while the backplane and its physical disks are internal Backplanes You can view the Backpla
146. es maximum possible redundancy The algorithm will also try to match a physical disk for its mirror to a disk that is closest to it in size However Intelligent Mirroring gives priority to size over redundancy The algorithm determines the candidate mirror in the following order o Across connectors at the same level of enclosure and of same size o Across connectors in the enclosure that are not at the same level but of same size o Across enclosures connected to same connector and to a disk of same size o Within the enclosure with a physical disk of acceptable size difference o Across connectors at the same level of enclosure and of acceptable size difference o Across connectors in the enclosure that are not at the same level of the enclosure but with a physical disk of acceptable size difference If the size difference is not acceptable the disk will not be mirrored and hence dropped from the span and number of span and disk in the span will be recalculated K NOTE It is recommended that you use Intelligent Mirroring to create RAID 10 across enclosures for simple and optimum configuration 2 NOTE To view the redundancy across enclosures achieved through Intelligent Mirroring click the virtual disk and view the physical disk IDs in each span which are from alternate enclosures o Select RAID 50 to implement striping across more than one span of physical disks RAID 50 groups n s disks as one large virtual disk with a capacity of s n
147. es ne Fves o_ nvo no ves ves No No No No Yes Yes Yes Yes Yes Yes No No NOTE For PERC 4 controllers Manual mode is not available Start Patroi Read No No fno fno fno fno fno fno fno noo Stop Patroi read No fno fno fno fno fno fno fno fno fwo fn Battery Tasks Table A 2 Battery Tasks Supported by the PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4 Di 4e Si 4e Di 4e DC CERC ATA100 4ch and 4 1M Controllers Battery Task PERC PERC PERC PERC PERC PERC PERC PERC PERC CERC ATA Name 3 SC 3 DC 3 QC 4 SC 4 DC 4 DI 4e Sl 4e DI 4e DC 100 4ch Recondition Battery Start Learn Cycle Delay Learn No No Cycle Connector Tasks Table A 3 Connector Tasks Supported by the PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4 Di 4e Si 4e Di 4e DC CERC ATA100 4ch and 4 IM Controllers Connector Task PERC PERC PERC PERC PERC PERC PERC PERC PERC CERC ATA PERC Name 3 SC 3 DC 3 QC 4 SC 4 DC 4 DI 4e SI 4e DI 4e DC 100 4ch 4 1M Physical Disk Tasks Table A 4 Physical Disk Tasks Supported by the PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4 Di 4e Si 4e Di 4e DC CERC ATA100 4ch and 4 IM Controllers Physical Disk Task PERC PERC PERC PERC CERC ATA PERC 4 1M Name 4e SI 4e DI 4e DC 100 4ch Blink Unblink Yes Yes Yes Yes Task only available when an enclosure or backplane and LEDs on the physical disks are present Assign and
148. es to the disk blocks on the physical disks Because the Fast Initialize task does not perform a write operation it causes less degradation to the disk than does the Slow Initialize task If you have had trouble with a physical disk or suspect that it has bad disk blocks you may want to perform a Slow Initialize task as this task remaps bad blocks and writes zeroes to all disk blocks Considerations for Slow Initialize Use the Slow Initialize task to initialize all physical disks included in the virtual disk The Slow Initialize task updates the metadata on the physical disks and erases all existing data and file systems In comparison with the Fast Initialize task you may want to use the Slow Initialize task if you have had trouble with a physical disk or suspect that it has bad disk blocks The Slow Initialize task remaps bad blocks and writes zeroes to all disk blocks The Slow Initialize task initializes one physical disk at a time Each physical disk displays the Clear state while being initialized During the time that the physical disk is in the Clear state the Cancel Clear physical disk task is available Performing a Cancel Clear task on the physical disk causes the Slow Initialize task to be cancelled for the entire virtual disk and all member physical disks See Clear Physical Disk and Cancel Clear for more information Formatting or Initializing a Disk To format or initialize a disk 1 Review the virtual disk that will be d
149. estroyed by the Format or Initialize and make sure that vital data will not be lost Click Blink at the bottom of the screen to blink the physical disks included in the virtual disk 2 Depending on the task you are initiating click the following button when ready o Format o Initialize o Slow Initialize o Fast Initialize To exit without formatting or initializing the virtual disk click Go Back To Virtual Disk Page To locate this task in Storage Management 1 Expand the Storage tree object to display the controller objects 2 Expand a controller object 3 Select the Virtual Disks object 4 Depending on the task you want to initiate select one of the following from the Available Tasks drop down menu o Format o Initialize o Slow Initialize o Fast Initialize 5 Click Execute Virtual Disk Task Delete Does my controller support this feature See Supported Features Deleting a virtual disk destroys all information including file systems and volumes residing on the virtual disk 7 NOTE When deleting virtual disks all assigned global hot spares may be automatically unassigned when the last virtual disk associated with the controller is deleted To delete a virtual disk To identify which physical disks are included in the virtual disk click Blink The LED lights on the physical disks will blink for 30 to 60 seconds When deleting a virtual disk the following considerations apply There are particula
150. esynching Paused Performing a Global Rescan while a virtual disk is in Resynching Paused state may cause the check consistency to resume In this case the virtual disk state changes to Resynching To do a global rescan 1 Select the Storage tree view object 2 Click the Information Configuration subtab 3 Select Global Rescan from the Global Tasks drop down menu 4 Click Execute Enable Disable Smart Thermal Shutdown By default the operating system and server shut down when the PowerVault 220S and PowerVault 221S enclosures reach a critical temperature of 0 or 50 degrees Celsius Using the Enable Smart Thermal Shutdown task however you can specify that only the enclosure and not the operating system and server be shut down when the enclosure reaches a critical temperature If the enclosure has virtual disks that are channel redundant then the enclosure can shut down while redundant data continues to be available on another channel See Channel Redundancy and Thermal Shutdown for more information To enable or disable thermal shut down 1 Select the Storage tree view object 2 Click the Information Configuration subtab 3 Select Enable Smart Thermal Shutdown or Disable Smart Thermal Shutdown from the Global Tasks drop down menu The Available Tasks drop down menu displays only one of these tasks at a time depending on which option is currently selected 4 Click Execute Storage Controllers The information disp
151. evel you set For more information see Setting Hot Spare Protection Policy Storage Component Severity Component status is indicated by the severity A component with a Warning or Critical Failure status requires immediate attention to avoid data loss if possible A component s status may indicate the combined status of the component and its lower level objects See Determining the Health Status for Storage Components for more information It may be useful to review the Alert Log for events indicating why a component has a Warning or Critical status For additional troubleshooting information see Troubleshooting Severity Component Status Normal OK The component is working as expected Warning Non critical A probe or other monitoring device has detected a reading for the component that is above or below the acceptable level The component may still be functioning but it could fail The component may also be functioning in an impaired state Data loss is possible Critical Failure Error The component has either failed or failure is imminent The component requires immediate attention and may need to be x replaced Data loss may have occurred Storage Properties and Current Activity The Configuration Information subtab displays information regarding a storage component These properties include details such as the number of connectors channels or ports on a controller or the Enclosure Manag
152. f physical disks can be physically attached to the controller For information on how many physical disks a controller supports per virtual disk see the virtual disk specifications for the controller in Supported Features Maximum Number of Virtual Disks per Controller Controllers have limitations on how many virtual disks can be created on the controller For information on how many virtual disks the controller supports see the virtual disk specifications for the controller in Supported Features Calculation for Maximum Virtual Disk Size and the Create Virtual Disk Express Wizard The Create Virtual Disk Express Wizard displays the minimum and maximum values for the virtual disk size This section describes how the maximum possible size for the virtual disk is calculated based on the controller type To identify the controller type see RAID Controller Technology SCSI SATA ATA and SAS SCSI CERC SATA and CERC ATA RAID Controllers When using a SCSI CERC SATA or CERC ATA RAID controller the controller calculates a maximum virtual disk size based on your RAID level selection and the available physical disk space provided by all suitable physical disks attached to the controller For example if the controller contains 12 physical disks with available space and you have specified a RAID 5 then the controller calculates the maximum virtual disk size based on the disk space provided by all 12 physical disks because all 12 physical di
153. figuration tab You can also check the Alert Log for alerts relating to unsupported firmware and driver versions It is also recommended to obtain and apply the latest Dell PowerEdge Server System BIOS on a periodic basis to benefit from the most recent improvements Please refer to the Dell PowerEdge system documentation for more information Isolate Hardware Problems If you receive a timeout alert related to a hardware device or if you otherwise suspect that a device attached to the system is experiencing a failure then do the following to confirm the problem Verify that the cables are correctly attached If the cables are correctly attached and you are still experiencing the problem then disconnect the device cables and reboot the system If the system reboots successfully then one of the devices may be defective Refer to the hardware device documentation for more information Rescan to Update Information on SCSI Controllers On SCSI controllers use the Rescan controller task to update information for the controller and attached devices This operation may take a few minutes if there are a number of devices attached to the controller If the Rescan does not properly update the disk information you may need to reboot your system Replacing a Failed Disk You may need to replace a failed disk in the following situations 1 Replacing a Failed Disk that is Part of a Redundant Virtual Disk 1 Replacing a Failed Physical
154. ge Management May Delay Displaying Storage Devices After Reboot Storage Management requires time after a reboot to find and inventory all attached storage devices You may experience a delay in storage controllers being displayed until this operation has completed You are Unable to Log into a Remote System Access can be denied here if you do not enter a user name and password that match an administrator account on the remote computer or if you mistype the login information The remote system may also not be powered on or there may be network problems Cannot Connect to Remote Windows Server 2003 System When connecting to a remote Windows Server 2003 system you must log into the remote system using an account that has administrator privileges By default Windows Server 2003 does not allow anonymous null connections to access the SAM user accounts Therefore if you are attempting to connect using an account that has a blank or null password the connection may fail Reconfiguring a Virtual Disk Displays Error in Mozilla Browser When reconfiguring a virtual disk using the Mozilla browser the following error message may display Although this page is encrypted the information you have entered is to be sent over an unencrypted connection and could easily be read by a third party You can disable this error message by changing a Mozilla browser setting To disable this error message 1 Select Edit and then Preferences 2 Click Privac
155. h Storage Management does not change the name in the BIOS 1 On PERC 3 Si 3 Di CERC SATA1 5 6ch and CERC SATA1 5 2s controllers changing the virtual disk name with Storage Management also changes the name in the BIOS If you do not specify a name for a virtual disk either when you create the virtual disk or by using the Rename task then the name for the virtual disk in the BIOS will be Virtual Disk The virtual disk name can contain only alphanumeric characters as well as spaces dashes and underscores The maximum name length depends on the controller In most cases the maximum length is 15 characters The name cannot start with a space end with a space or be left blank K NOTE The Rename task is not available for concatenated virtual disks on a CERC SATA1 5 2s controller To rename a virtual disk 1 Type the new name in the text box 2 Click Rename If you want to exit without renaming the virtual disk click Go Back To Virtual Disk Page To locate this task in Storage Management 1 Expand the Storage tree object to display the controller objects 2 Expand a controller object 3 Select the Virtual Disks object 4 Select Rename from the Available Tasks drop down menu 5 Click Execute Virtual Disk Task Change Policy Does my controller support this feature See Supported Features Use the Change Policy task to change a virtual disk s read write or cache policy See RAID Controller Read Write Cac
156. h controller supports For more information see your hardware documentation Supported Features on the PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4 Di 4e Si 4e Di 4e DC CERC ATA100 4ch and 4 IM Controllers This section identifies the controller supported features and whether or not an enclosure can be attached to the controller 1 Controller Tasks 1 Battery Tasks 1 Connector Tasks Physical Disk Tasks Virtual Disk Tasks Virtual Disk Specifications 1 Supported RAID Levels Read Write and Disk Cache Policy 1 Enclosure Support For enclosure supported tasks see Enclosure and Backplane Features Controller Tasks Table A 1 Controller Tasks Supported by the PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4 Di 4e Si 4e Di 4e DC CERC ATA100 4ch and 4 IM Controllers Controller Task Name Enable Alarm Disable Alarm Quiet Alarm Test Alarm Reset configuration Set Rebuild Rate Set Background Initialization Rate Set Check Consistency Rate Set Reconstruct Rate Rescan Controller Create Virtual Disk Export Log File Clear Foreign Configuration Import Foreign Configuration Import Recover Foreign Configuration Set Patrol Read Mode PERC PERC PERC PERC PERC PERC PERC PERC PERC CERC ATA PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4 DI 4e SI 4e DI 4e DC 100 4ch 4 1M fies he pe res fre foe ne fv fies r
157. h of the two channels will have a single disk selected b Select an additional disk on each of the two channels You have now selected the minimum number of disks for a RAID 10 c Repeat step b until you have the desired number of disks d Click Continue RAID 50 a Select one physical disk on each of three channels In other words each of the three channels will have a single disk selected b Select an additional disk on each of the three channels You have now selected the minimum number of disks for a RAID 50 Continue selecting a disk on each channel until you have selected the desired number of disks c Repeat step b until you have the desired number of disks d Click Continue Physical disk Selection for Channel redundant Virtual Disks on a PERC 3 Di Controller The following section describes creating a channel redundant virtual disk using RAID 10 on a PERC 3 Di controller RAID 10 a Select one physical disk on each of two channels In other words each of the two channels will have a single disk selected b Select an additional disk on each of the two channels You have now selected the minimum number of disks for a RAID 10 c Repeat step b until you have selected the desired number of disks You must select the same number of physical disks on each channel that you use d Click Continue Connector Health This screen displays the status of the connector and the components attached to the connector Conn
158. has a Warning or Critical status For additional troubleshooting information see Troubleshooting Severity Component Status Normal OK The component is working as expected Warning Non critical A probe or other monitoring device has detected a reading for the component that is above or below the acceptable level A The component may still be functioning but it could fail The component may also be functioning in an impaired state Data loss is possible Critical Failure Error The component has either failed or failure is imminent The component requires immediate attention and may need to be replaced Data loss may have occurred Enclosure and Backplane Information For information on enclosures and backplanes see the following topics Enclosures and Backplanes 1 Enclosure and Backplane Properties and Tasks Enclosure and Backplane Components For information on attached components see the following topics 1 Physical Disks Enclosure and Backplane Properties and Tasks Use this window to view information about the enclosure or backplane and execute enclosure tasks Enclosure and Backplane Properties The enclosure or backplane properties can vary depending on the model of the controller Enclosure or backplane properties may include Property Name State Connector Enclosure ID Target ID Configuration Firmware Version Service Tag Asset Tag
159. he and Disk Cache Policy for more information To change a virtual disk s read write or disk cache policy 1 Select the new policy from the Read Policy Write Policy and Disk Cache Policy drop down menus 2 Click Apply Changes If you want to exit without changing the virtual disk policy click Go Back To Virtual Disk Page K NOTE In cluster mode the PERC 3 DC controller only allows write through caching To locate this task in Storage Management 1 Expand the Storage tree object to display the controller objects 2 Expand a controller object 3 Select the Virtual Disks object 4 Select Change Policy from the Available Tasks drop down menu 5 Click Execute Split Mirror Does my controller support this feature See Supported Features Use the Split Mirror task to separate mirrored data originally configured as a RAID 1 RAID 1 concatenated or RAID 10 virtual disk Splitting a RAID 1 or RAID 1 concatenated mirror creates two concatenated nonredundant virtual disks Splitting a RAID 10 mirror creates two RAID 0 striped nonredundant virtual disks Data is not lost during this operation K To NOTE The Split Mirror task is not supported on the CERC SATA1 5 2s controller NOTE On the PERC 3 Si PERC 3 Di and CERC SATA1 5 6ch controllers doing a Split Mirror on a RAID 1 concatenated virtual disk results in concatenated virtual disks that cannot be subjected to any further modification You cannot re
160. he RAID firmware 1 Orphan drive A physical disk in the foreign configuration has configuration information that matches another physical disk that is already a part of an array either a foreign or a native array NOTE For other applicable physical disk tasks and properties see Physical Disk Properties and Tasks Layout This property displays the RAID level of the foreign configuration Remarks This property gives more information about the foreign virtual disk If the virtual disk cannot be imported the reason for failure is displayed Exceeded Maximum The number of virtual disks selected for import has exceeded the maximum number of supported disks Missing physical disk or missing span One or more physical disks or spans in the virtual disk to be imported is missing Unsupported The selected RAID level is not supported on this controller Orphan Drive The physical disk was once part of a RAID volume but was replaced The configuration should be cleared Stale Physical Disk The physical disk in the virtual disk to be imported has outdated data Partially Foreign The virtual disk is part of an already existing configuration Some physical disks in this virtual disk are foreign Dedicated Hot This property displays whether the foreign disk is a dedicated hot spare Spare Based on this information you can decide whether you want to import recover or clear the foreign configuration
161. he information in Considerations Before Creating Virtual Disks Storage Management provides wizards to help you create a virtual disk The Create Virtual Disk Express Wizard calculates an appropriate virtual disk layout based on the available space and controller considerations Using the Express Wizard you can quickly create a virtual disk using recommended selections See Create Virtual Disk Express Wizard Step 1 of 2 for more information The Create Virtual Disk Advanced Wizard allows you to specify the read write and cache policy for the virtual disk You can also select the physical disks and the controller connector to be used You need a good knowledge of RAID levels and hardware to use the Advanced Wizard See Create Virtual Disk Advanced Wizard Step 1 of 4 for more information You may also want to refer to the following related sections 1 What Is RAID 1 Channel Redundancy and Thermal Shutdown for information on creating a channel redundant virtual disk Virtual Disk Task Delete Reconfiguring Migrating Virtual Disks 1 Physical Disk Properties and Tasks Reconfiguring Migrating Virtual Disks Does my controller support this feature See Supported Features You can reconfigure or migrate a virtual disk in order to increase the disks capacity or change its RAID level To reconfigure a virtual disk 1 Review the information in Starting and Target RAID Levels for
162. he org Server Administrator utilizes the OverLIB JavaScript library This library can be obtained from www bosrup com Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products Dell Inc disclaims any proprietary interest in trademarks and trade names other than its own August 2009 Back to Contents Page Supported Features Dell OpenManage Server Administrator Storage Management User s Guide Supported Features on the PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4 Di 4e Si 4e Di 4e DC CERC ATA100 4ch and 4 IM Supported Features on Controllers o Supported Features on the PERC 3 Si 3 Di CERC SATA1 5 2s and CERC SATA1 5 6ch Controllers the PERC S100 and S300 Controllers Supported Features on Supported Features on the PERC 5 E PERC 5 i PERC 6 E PERC 6 1 PERC 6 1 Modular and CERC 6 1 Controllers the Non RAID Controllers Enclosure and Backplane Supported Features on the PERC H800 PERC H700 Adapter PERC H700 Integrated and PERC H700 Modular Controllers Features Maximum Supported Configuration Supported Features on the SAS 5 iR SAS 6 iR and PERC H200 Controllers Different controllers support different features The tasks displayed by the Storage Management menus and other features vary depending on whether the controller supports the feature This appendix identifies the features that eac
163. he read policies indicate whether or not the controller should read sequential sectors of the virtual disk when seeking data Read Ahead When using read ahead policy the controller reads sequential sectors of the virtual disk when seeking data Read ahead policy may improve system performance if the data is actually written to sequential sectors of the virtual disk No Read Ahead Selecting no read ahead policy indicates that the controller should not use read ahead policy Adaptive Read Ahead When using adaptive read ahead policy the controller initiates read ahead only if the two most recent read requests accessed sequential sectors of the disk If subsequent read requests access random sectors of the disk the controller reverts to no read ahead policy The controller continues to evaluate whether read requests are accessing sequential sectors of the disk and can initiate read ahead if necessary Read Cache Enabled When the read cache is enabled the controller reads the cache information to see if the requested data is available in the cache before retrieving the data from the disk Reading the cache information first can provide faster read performance because the data if available in the cache can more quickly be retrieved from the cache than from the disk Read Cache Disabled When the read cache is disabled the controller retrieves data directly from the disk and not from the cache Write Policy Does my controller support this featu
164. his feature See Supported Features If you do not have a suitable backup available and if the failed disk is part of a virtual disk on a controller that supports the Online physical disk task then you can attempt to retrieve data by selecting Online from the failed disk s drop down task menu The Online command attempts to force the failed disk back into a Online state If you are able to force the disk into a Online state you may be able to recover individual files How much data you can recover depends on the extent of disk damage File recovery is only possible if a limited portion of the disk is damaged There is no guarantee you will be able to recover any data using this method A forced Online does not fix a failed disk You should not attempt to write new data to the virtual disk After retrieving any viable data from the disk replace the failed disk as described previously in Replacing a Failed Disk that is Part of a Redundant Virtual Disk or Replacing a Failed Physical Disk that is Part of a Nonredundant Virtual Disk Replacing a Failed Physical Disk in a RAID 1 on a CERC SATA1 5 2s On a CERC SATA1 5 2s controller a rebuild may not start automatically when you replace a failed physical disk that is part of a RAID 1 virtual disk In this circumstance use the following procedure to replace the failed physical disk and rebuild the redundant data 1 Shut down the system 2 Disconnect the SATA cable on the failed physica
165. hysical Disks for Both Redundant and Nonredundant Virtual Disks A Rebuild Does Not Work A rebuild will not work in the following situations The virtual disk is nonredundant For example a RAID 0 virtual disk cannot be rebuilt because RAID 0 does not provide data redundancy There is no hot spare assigned to the virtual disk As long as the virtual disk is redundant you can do the following to rebuild it o Pull out the failed physical disk and replace it A rebuild will automatically start on the new disk o Assign a hot spare to the virtual disk and then perform a rebuild You are attempting to rebuild onto a hot spare that is too small Different controllers have different size requirements for hot spares See Considerations for Hot Spares on PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di 4e Si 4e Di CERC ATA100 4ch PERC 5 E PERC 5 i PERC 6 E PERC 6 1 and CERC 6 I Controllers and Considerations for Hot Spares on PERC 3 Si 3 Di CERC SATA1 5 6ch S100 and 300 Controllers for more information on disk size requirements The hot spare has been unassigned from the virtual disk This could happen on some controllers if the hot spare was assigned to more than one virtual disk and has already been used to rebuild a failed physical disk for another virtual disk See Considerations for Hot Spares on PERC 3 Si 3 Di CERC SATA1 5 6ch 100 and 300 Controllers for a description of this situation 1 On SCSI control
166. ical Connector Properties and Tasks Enclosure and Backplane Properties and Tasks Set Patrol Read Mode Does my controller support this feature See Supported Features Patrol Read is a feature for identifying disk errors in order to avoid disk failures and data loss or corruption The Patrol Read only runs on disks that are being used in a virtual disk or that are hot spares When possible the Patrol Read corrects disk errors and restores the integrity of the data The Patrol Read task runs in the background When the Patrol Read mode is set to Auto the Patrol Read is initiated when the controller has been idle for a period of time and when no other background tasks are active In this circumstance the Patrol Read feature also enhances system performance as disk errors can be identified and corrected while the disk is not the subject of 1 0 activity The controller adjusts the amount of system resources dedicated to the Patrol Read based on the amount of controller activity that is competing with the Patrol Read task During heavy controller activity fewer system resources are dedicated to the Patrol Read task The Patrol Read will not run on a physical disk in the following circumstances The physical disk is not included in a virtual disk or assigned as a hot spare The physical disk is included in a virtual disk that is currently undergoing one of the following o A rebuild o A reconfiguration or reconstruction o A
167. ical disk has failed or is in an unusable state In some cases the physical disk can be returned to a usable state by performing an Initialize task If the Initialize task does not appear on the physical disk drop down menu then this disk cannot be recovered Foreign The physical disk has been moved from another controller and contains all or some portion of a virtual disk foreign configuration A physical disk that has lost communication with the controller due to a power loss faulty cable or other failure event may also display the Foreign state See Foreign Configuration Operations for more information Unsupported The physical disk is using an unsupported technology or it may not be certified by Dell The physical disk cannot be managed by Storage Management Replacing A Replace Member Disk task is being performed on the physical disk For more information see Replace Member Disk and Revertible Hot Spare NOTE You can cancel the copying of data at any time during the execution of this task This property displays the full capacity of the disk This property displays whether or not the physical disk is certified by Dell This property displays whether or not the physical disk has received a SMART alert and is therefore predicted to fail For more information on SMART predictive failure analysis see Monitoring Disk Reliability on RAID Controllers For information on replacing the physical disk see Replaci
168. ick Go Back to Previous Page To locate this task in Storage Management 1 Expand the Storage tree object to display the controller objects 2 Select a controller object 3 Select the Information Configuration subtab 4 Select Set Reconstruct Rate from the Available Tasks drop down menu 5 Click Execute You can also locate this task from the Change Controller Properties drop down menu For more information see Change Controller Properties Related I nformation Virtual Disk Task Reconfigure Step 1 of 3 Redundant Path Configuration Does my controller support this feature See Supported Features NOTE This feature requires that the physical devices connected to the controller have the latest firmware For the latest supported firmware see the Dell Support website at support dell com This feature is supported only on SAS controllers with firmware version 6 1 or later which can be connected to enclosures and not backplanes The supported enclosures are Dell PowerVault MD1000 and PowerVault MD1120 This feature enables load balancing by faster processing of I O requests In a redundant path configuration connect both the connectors of a SAS enclosure which must be in a unified mode to both connectors of a controller Storage Management detects this configuration and displays it on the user interface as a redundant path configuration The two connectors Connector 0 and Connector 1 that were
169. icy Disk Cache Policy Cache 1 0 Direct 1 0 Enclosure Support Table A 52 Enclosure Support on the PERC S100 and S300 Controllers Enclosure Support PERC S100 PERC S300 Can an enclosure be attached to this controller No No Supported Features on the Non RAID Controllers This section identifies the controller supported features and whether or not an enclosure can be attached to the controller 1 Controller Tasks 1 Battery Tasks 1 Connector Tasks Physical Disk Tasks 1 Virtual Disk Tasks 1 Enclosure Support For enclosure supported tasks see Enclosure and Backplane Features Controller Tasks Table A 53 Controller Tasks Supported on the Non RAID Controllers Controller Task Name Enable Alarm Disable Alarm Quiet Alarm Test Alarm Reset configuration Set Rebuild Rate Set Background Initialization Rate Set Check Consistency Rate Set Reconstruct Rate Rescan Controller Create Virtual Disk Export Log File Clear Foreign Configuration Import Foreign Configuration Set Patrol Read Mode Start Patrol Read Stop Patrol Read Non RAID SCSI Non RAID SAS No No No e No No No no No o e No e mo h No o e No o e No e mo e No o e No No No No Import Recover Foreign Configuration Ino NO No no No h No no Battery Tasks Table A 54 Battery Tasks Supported on the Non RAID Co
170. identify which controllers are attached to the system 1 Select the Storage tree view object The Health subtab displays the name and status for each controller attached to the system 2 Click the Information Configuration subtab to display additional information for each controller 3 To display more information about a particular controller including its tasks click the controller s name in the Name column on the Information Configuration subtab This action displays the controller s Information Configuration subtab The Information Configuration subtab displays information about the controller s components and enables you to execute the controller tasks Related information 1 Controllers 1 Controller Health Controller Properties and Tasks How do I turn off an alarm Some storage components have alarms to indicate error conditions The following describes how to turn off an alarm after it is sounding 1 Quiet Alarm Controller 1 Disable Alarm Controller Disable Alarm Enclosure What RAID level is best for me See Choosing RAID Levels and Concatenation and Comparing RAID Level and Concatenation Performance for more information Back to Contents Page Back to Contents Page Getting Started Dell OpenManage Server Administrator Storage Management User s Guide Launching Storage Management User Privileges Using the Graphical User Interface Using the Storage Manage
171. igure see Virtual Disk Task Reconfigure Step 1 of 3 To change the controller s rebuild rate 1 Type a numerical value in the New Rebuild Rate text box The value must be within the 0 100 range 2 Click Apply Changes If you want to exit and cancel your changes click Go Back to Previous Page To locate this task in Storage Management 1 Expand the Storage tree object to display the controller objects 2 Select a controller object 3 Select the Information Configuration subtab 4 Select Set Rebuild Rate from the Available Tasks drop down menu 5 Click Execute You can also locate this task from the Change Controller Properties drop down menu For more information see Change Controller Properties Reset Configuration Does my controller support this feature See Supported Features Use the Reset Configuration task to erase all information on the controller so that you can perform a fresh configuration This operation destroys all data and virtual disks on the controller and unassigns any hot spares You will need to completely reconfigure your storage after performing this operation CAUTION Resetting a configuration permanently destroys all data on all virtual disks attached to the controller If the system or boot partition resides on these virtual disks it will be destroyed 74 NOTE Resetting the controller configuration does not remove a foreign configuration To remove a foreign configuration
172. information Maximum Warning Threshold Exceeded The enclosure s temperature has risen above the maximum warning threshold See Set Temperature Probe Values for more information Missing The temperature probe is not present in the enclosure Inactive The temperature probe is present in the enclosure but the EMM that it monitors is not installed Reading This property displays the current temperature of the enclosure as reported by the temperature probe Warning The Minimum and Maximum properties indicate the temperatures currently set for the Warning threshold See Set Temperature Probe Values Threshold for more information Failure The Minimum and Maximum properties indicate the temperatures currently set for the Failure threshold See Set Temperature Probe Values Threshold for more information Set Temperature Probe Properties and Tasks Click the Set Temperature Probe button to launch the wizard for changing the temperature probe s Warning threshold You can change the Warning threshold for each of the temperature probes included in the enclosure See Set Temperature Probe Values for more information Do the following to launch the Set Temperature Probe wizard 1 Expand the Storage tree object to display the controller objects 2 Expand a controller object 3 Expand a Connector object 4 Expand the enclosure object 5 Select the Temperatures object 6 Click Se
173. ing state While the virtual disk displays a Resynching state the Pause Check Consistency and Cancel Check Consistency tasks will be available Executing either of these tasks on the virtual disk while it is in Resynching state will cause the virtual disk to be in a Failed Redundancy state Format and Initialize Slow and Fast I nitialize Does my controller support this feature See Supported Features The Format or Initialize task erases the files and removes the file systems on virtual disks while keeping the virtual disk configuration intact Formatting or initializing a virtual disk destroys all data on the virtual disk If the boot partition resides on the virtual disk it will be destroyed by the format operation Some controllers have BIOS settings for a fast initialize or a slow initialize In this case the Initialize task performs the type of initialization fast or slow that is specified in the BIOS Other controllers have a Fast Initialize and Slow Initialize task available on the controller task drop down menu See Considerations for Fast Initialize and Considerations for Slow Initialize for more information K NOTE On a Linux system you cannot format a virtual disk that contains a mounted volume Considerations for Format The format task applies to the PERC 3 Si 3 Di and CERC SATA1 5 6ch controllers After the format is initiated it cannot be cancelled Considerations for nitialize The initia
174. irtual Disk 1 Maximum Number of Virtual Disks per Controller Considerations for RAID 10 and 50 on PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di 4e Si 4e Di and CERC ATA100 4ch Controllers On the PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di 4e Si 4e Di and CERC ATA100 4ch controllers there are special considerations when implementing RAID 10 or RAID 50 on a disk group that has disks of different sizes When implementing RAID 10 or RAID 50 disk space is spanned to create the stripes and mirrors The span size can vary to accommodate the different disk sizes There is however the possibility that a portion of the largest disk in the disk group will be unusable resulting in wasted disk space For example consider a disk group that has the following disks Disk A 40 GB Disk B 40 GB Disk C 60 GB Disk D 80 GB In this example data will be spanned across all four disks until Disk A and Disk B and 40 GB on each of Disk C and D are completely full Data will then be spanned across Disks C and D until Disk C is full This leaves 20 GB of disk space remaining on Disk D Data cannot be written to this disk space as there is no corresponding disk space available in the disk group to create redundant data Comparing RAID Level and Concatenation Performance The following table compares the performance characteristics associated with the more common RAID levels This table provides general guidelines for choosing a RA
175. irtual disks When necessary the Check Consistency task rebuilds the redundant data To verify a virtual disk s redundant information 1 Locate the controller on which the virtual disk resides in the tree view Expand the controller object until the Virtual Disks object is displayed 2 Select the Check Consistency task from the virtual disk s drop down menu and click Execute Rebuilding Redundant Information Does my controller support this feature See Supported Features If you have a redundant virtual disk you can reconstruct the contents of a failed physical disk onto a new disk or a hot spare A rebuild can take place during normal operation but it will degrade performance The following sections provide additional information on rebuilding disks 1 Replacing a Failed Disk describes how to replace a failed physical disk and initiate a rebuild 1 Set Rebuild Rate describes how to set the rebuild rate on selected controllers 1 A Rebuild Does Not Work describes situations in which a rebuild will not work Virtual Disk Bad Block Management What is a Virtual Disk Bad Block Virtual disk bad blocks are due to bad blocks on one or more member physical disks Read operation on the virtual disks having bad blocks may fail Storage Management generates a critical alert 2387 to notify you of the bad blocks on the virtual disk Virtual disk bad blocks are discovered when the controller performs any operation that requires s
176. is a power loss NOTE If you have set the controller to write back force cache policy then the cache policy is not changed during the Learn cycle When using write back force cache policy it is possible for data loss to occur if there is a power loss while the Learn cycle is in progress The controller firmware automatically initiates the Learn cycle every 90 days You can however delay the start time of the Learn cycle for a further seven days after which the firmware automatically initiates the Learn cycle For more information see Battery Delay Learn Cycle NOTE The Learn cycle cannot be performed while the battery is charging If either a user or the controller firmware initiate the Learn cycle while the battery is charging then the battery Learn State displays Requested When the battery is fully charged the Learn cycle will begin Battery Delay Learn Cycle Does my controller support this feature See Supported Features The controller firmware automatically initiates the battery Learn cycle every 90 days Although you cannot stop the firmware from running the Learn cycle you can delay the start time of the Learn cycle for up to seven days See Start Learn Cycle for more information on the battery Learn cycle To delay the battery Learn cycle 1 Type a numerical value in the Days text box The value must be within the 0 7 range The value you enter indicates the number of days for which you want to delay the battery
177. is created if the controller is security enabled and has sufficient number of secure physical disks to create a virtual disk of the selected RAID level In this case the Summary of Virtual Disk Attributes displays a Secure Virtual Disk attribute with a value Yes and only secured physical disks are listed as candidates for hot spare Do one of the following Click Finish to create the virtual disk with the attributes shown on this screen Click Go Back To Previous Page to return to Create Virtual Disk Express Wizard Step 1 of 2 if you want to change your selections Click Exit Wizard to cancel the virtual disk Create Virtual Disk Advanced Wizard Step 1 of 4 Does my controller support this feature See Supported Features The Create Virtual Disk Advanced Wizard allows you to specify the read write and cache policy for the virtual disk You can also select the physical disks and the controller connector to be used You need a good knowledge of RAID levels and hardware to use the Advanced Wizard Before creating a virtual disk you should be familiar with the information in Considerations Before Creating Virtual Disks You may also want to review Choosing RAID Levels and Concatenation If you want to have the wizard choose a recommended virtual disk configuration for you click Go To Express Wizard To Create a Virtual Disk Advanced Wizard Step 1 of 4 1 Click the radio button to select the correct RAID le
178. is displayed if the operating system storport driver does not meet the minimum requirement This is applicable for Windows operating system only NOTE To download the latest storport driver see the Microsoft Knowledge Base article at support microsoft com kb 943545 Controller Health This screen displays the status of the controller and the components attached to the controller Controller Severity Component status is indicated by the severity A component with a Warning or Critical Failure status requires immediate attention to avoid data loss if possible A component s status may indicate the combined status of the component and its lower level objects See Determining the Health Status for Storage Components for more information It may be useful to review the Alert Log for events indicating why a component has a Warning or Critical status For additional troubleshooting information see Troubleshooting Severity Component Status 2 Normal OK The component is working as expected Warning Non critical A probe or other monitoring device has detected a reading for the component that is above or below the acceptable level A The component may still be functioning but it could fail The component may also be functioning in an impaired state Data loss is possible KR Critical Failure Error The component has either failed or failure is imminent The component requires immediate attention and may need to be r
179. is provided with the controllers Reviewing the hardware documentation along with this document may provide a better understanding of the controller limitations Virtual Disk Considerations for PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di 4e Si 4e Di CERC ATA100 4ch PERC 5 E PERC 5 i PERC 6 E and PERC 6 I Controllers In addition to the considerations described in this section you should also be aware of the controller limitations described in Number of Physical Disks per Virtual Disk Be aware that the following considerations apply when creating virtual disks Creating virtual disks on PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di 4e Si 4e Di CERC ATA100 4ch PERC 5 E PERC 5 i PERC 6 E and PERC 6 1 controllers When you create a virtual disk you specify which physical disks are to be included in the virtual disk The virtual disk you create spans the specified physical disks Depending on the size of the virtual disk the virtual disk may not consume all of the space on the physical disks Any leftover space on the physical disks cannot be used for a second virtual disk unless the physical disks are of equal size In addition when the physical disks are of equal size and you can use the leftover space for a second virtual disk this new virtual disk cannot expand to include any physical disks not included in the original virtual disk Space allocation when deleting and creating virtual disks on PERC 3 SC 3 D
180. ity information as standard RAID 5 Data is striped across all spans RAID 50 is more expensive in terms of disk space NOTE On the PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di 4e Si 4e Di and CERC ATA100 4ch controllers there are special considerations when implementing RAID 50 on a disk group that has disks of different sizes See Considerations for RAID 10 and 50 on PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di 4e Si 4e Di and CERC ATA100 4ch Controllers for more information Related I nformation See the following Organizing Data Storage for Availability and Performance 1 Comparing RAID Level and Concatenation Performance 1 Controller supported RAID Levels 1 Number of Physical Disks per Virtual Disk 1 Maximum Number of Virtual Disks per Controller RAID Level 60 Striping over RAID 6 sets RAID 60 is striping over more than one span of physical disks that are configured as a RAID 6 For example a RAID 6 disk group that is implemented with four physical disks and then continues on with a disk group of four more physical disks would be a RAID 60 Figure 3 7 RAID 60 RAID 60 Characteristics 1 Groups n s disks as one large virtual disk with a capacity of s n 2 disks where s is the number of spans and n is the number of disks within each span Redundant information parity is alternately stored on all disks of each RAID 6 span Better read performance but sl
181. ization BGI Yes Fast Initialize Virtual Disk Yes Slow Initialize Virtual Disk Yes Yes Yes Yes Cancel Initialize Virtual Disk Yes Yes Yes Yes Replace Member Yes Yes Yes Yes Virtual Disk Specifications Table A 33 Virtual Disk Specifications for the PERC H800 PERC H700 Adapter PERC H700 Integrated and PERC H700 Modular Controllers Virtual Disk Specification PERC H800 PERC H700 Adapter PERC H700 Integrated PERC H700 Modular Maximum Number of Virtual Disks per Controller lea iifweti i iC ea O Maximum Number of Spans per Virtual Disk Be o e O e O b O f Maximum Number of Physical Disks per Span Maximum Number of Virtual Disks per Disk Group ie o o e O o e O o je e Maximum Number of Physical Disks that Can Be Concatenated nan a a a O Maximum Number of Physical Disks in a RAID 0 l2 oo az o z o az O Maximum Number of Physical Disks in a RAID 5 Maximum Number of Physical Disks in a RAID 10 Maximum Number of Physical Disks in a RAID 50 Minimum Number of Physical Disks that Can Be Concatenated na a a a Minimum Number of Physical Disks in a RAID 0 a Ee E Minimum Number of Physical Disks in a RAID 1 Minimum Number of Physical Disks in a RAID 5 Minimum Number of Physical Disks in a RAID 10 aA Minimum Number of Physical Disks in a RAID 50 ise lf o e S e O Maximum number of physical disks in a RAID 6 Maximum number of physical disks in a RAID 6
182. ization Rate for more information Check The check consistency rate is the percentage of the system s resources dedicated to performing a check consistency on a redundant Consistency Rate virtual disk See Check Consistency for more information Reconstruct Rate The reconstruct rate is the percentage of the system s resources dedicated to reconstructing a disk group after adding a physical disk or changing the RAID level of a virtual disk residing on the disk group See Set Reconstruct Rate for more information Alarm State This property displays whether the controller s alarm is enabled or disabled NOTE This property is displayed only for SCSI storage controllers Abort check This property enables you to stop the Check Consistency operation on error rather than continuing This property is available only on consistency on controllers that have controller firmware version 6 1 and later error Revertible Hot This property enables the automatic copying of data from a physical disk to a hot spare in case of predictive failure or from a hot spare Spare to a physical disk in case of replacement of a degraded disk For more information see Revertible Hot Spare Loadbalance This property provides the ability to automatically use both controller ports or connectors connected to the same enclosure to route 1 0 requests This property is available only on SAS controllers that have controller firmware version 6 1 and later For more inf
183. k Tasks 1 Ww What Is RAID 1 What s New 1 Back to Contents Page Back to Contents Page Dell OpenManage Server Administrator Storage Management User s Guide K NOTE A NOTE indicates important information that helps you make better use of your computer A CAUTI ON A CAUTI ON indicates potential damage to hardware or loss of data if instructions are not followed Information in this document is subject to change without notice 2009 Dell Inc All rights reserved Reproduction in any manner whatsoever without the written permission of Dell Inc is strictly forbidden Trademarks used in this text Dell the DELL logo PowerVault and Dell OpenManage are trademarks of Dell Inc Microsoft Windows are registered trademarks and Windows Server is a trademark of Microsoft Corporation in the United States and other countries VMware is a registered trademark of VMware Inc Server Administrator includes software developed by the Apache Software Foundation www apache org Server Administrator utilizes the OverLIB JavaScript library This library can be obtained from www bosrup com Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products Dell Inc disclaims any proprietary interest in trademarks and trade names other than its own August 2009 Back to Contents Page Back to Contents Page Overview Dell OpenManage Server Administ
184. k from the Available Tasks drop down menu 5 Click Execute NOTE Different controllers support different features For this reason the tasks displayed on the Tasks drop down menu can vary depending on which controller is selected in the tree view If no tasks can be performed because of controller or system configuration limitations then the Tasks drop down menu displays No Task Available Controller Tasks 1 Rescan Controller Create Virtual Disk Enable Alarm Controller Disable Alarm Controller Quiet Alarm Controller Test Alarm Controller 1 Set Rebuild Rate Reset Configuration 1 Export Log 1 Foreign Configuration Operations 1 Importing Foreign Configurations Importing Recovering Foreign Configurations 1 Clear Foreign Configuration Set Background Initialization Rate 1 Set Check Consistency Rate 1 Set Reconstruct Rate 1 Set Patrol Read Mode 1 Start and Stop Patrol Read 1 Manage Preserved Cache 1 Change Controller Properties Rescan Controller Does my controller support this feature See Supported Features On SCSI controllers a rescan updates configuration changes such as new or removed devices for all components attached to the controller For information on when you may want to do a rescan see Rescan to Update Storage Configuration Changes GZ NOTE Rescan Controller is not supp
185. kplane and the attached physical disks A Connector object that cannot be expanded in the tree view is an open connector not currently attached to storage Storage Management displays a number for each connector These numbers correspond to the connector numbers on the controller hardware You can use these numbers to identify which open connector displayed in the tree view is the open connector on the controller hardware Checking the Enclosure s Temperature Does my controller support this feature See Supported Features To check the enclosure s temperature 1 Expand the tree view until the Temperatures object is displayed 2 Select the Temperatures object The temperature reported by the temperature probe is displayed in Celsius in the Reading column in the right pane For information related to the enclosure s temperature see the following 1 Enclosure Temperature Probes 1 Set Temperature Probe Values Temperature Probe Properties and Tasks 1 SMART Thermal Shutdown does not apply to the Ultra SCSI Ultra2 SCSI Ultral60 SCSI LSI 1020 LSI 1030 and LSI PCI e U320 controllers Verifying the Enclosure s EMM Firmware Version Does my controller support this feature See Supported Features The firmware for the Enclosure Management Modules EMMs must be at the same level The status of the EMMs is displayed as degraded if there is a mismatch between the EMM firmware To verify the EMM firmware
186. l Disk Advanced Wizard Yes Yes Yes Create Virtual Disk Express Wizard Yes Yes Yes Rename Yes Yes Yes Blink Unblink Yes Reconfigure Yes Change Policy Yes Split Mirror Yes Unmirror Yes Delete Last Virtual Disk Yes Delete any Virtual Disk Yes Check Consistency Yes Cancel Check Consistency Yes Pause Check Consistency Yes Resume Check Consistency Yes Cancel Background Initialization BGI Format Virtual Disk Yes Yes No Yes Restore Dead Disk Segments Yes Yes Ino Yes Virtual Disk Specifications Table A 15 Virtual Disk Specifications for the PERC 3 Si 3 Di CERC SATA1 5 2s and CERC SATA1 5 6ch Controllers Virtual Disk Specification PERC eal SI PERC 3 DI CERC SATA 2S CERC SATA 6ch Maximum Number of Virtual Disks per Controller Minimum Virtual Disk Size Maximum Virtual Disk Size Maximum Number of Spans per Virtual Disk Maximum Number of Physical Disks per Span Minimum Stripe Size Maximum Stripe Size Maximum Number of Virtual Disks per Disk Group Maximum Number of Physical Disks that Can Be Concatenated Maximum Number of Physical Disks in a RAID 0 as o o ase o 2 oO fe e Maximum Physical Disks in a RAID 1 2 fe Maximum Number of Physical Disks in a RAID 5 he o je o Ja fje Maximum Number of Physical Disks in a RAID 10 Maximum Number of Physical Disks in a RAID 50 Minimum Number of Physical Disks in a RAID 0 Minimum Number of Physical Disks in a RAID 1 Minimum Number of Phy
187. l disk in the RAID 1 virtual disk 3 Replace the failed physical disk with a formatted physical disk You can format the physical disk using the Disk Utilities in the controller BIOS You may not need to format the entire physical disk Formatting 1 of the disk may be sufficient 4 Reboot the system When rebooted the RAID 1 virtual disk should display a Failed Redundancy state 5 Expand the controller object in the tree view and select the Physical Disks object 6 Execute the Rebuild task for the physical disk you added Recovering from Removing the Wrong Physical Disk If the physical disk that you mistakenly removed is part of a redundant virtual disk that also has a hot spare then the virtual disk rebuilds automatically either immediately or when a write request is made After the rebuild has completed the virtual disk will no longer have a hot spare since data has been rebuilt onto the disk previously assigned as a hot spare In this case you should assign a new hot spare If the physical disk that you removed is part of a redundant virtual disk that does not have a hot spare then replace the physical disk and do a rebuild See the following sections for information on rebuilding physical disks and assigning hot spares 1 Understanding Hot Spares for RAID controllers 1 Rebuild for PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di CERC ATA100 4ch PERC 5 E and PERC 5 i controllers You can avoid removing the wrong physical
188. l disk size of 819 725 will be rounded down to 819 72 A virtual disk size of 819 726 will be rounded up to 819 73 This property displays the operating system device name for this object Bus Protocol This property displays the technology that the physical disks included in the virtual disk are using Possible values are SCSI Small Computer System Interface SAS Serial Attached SCSI SATA Serial Advanced Technology Attachment SATA Media This property displays the media type of the physical disks present in the virtual disk The possible values are HDD Hard Disk Drive A HDD is a non volatile storage device which stores digitally encoded data on rapidly rotating platters with magnetic surfaces SSD Solid State Drive An SSD is a data storage device that uses solid state memory to store persistent data Unknown Storage Management is unable to determine the media type of the physical disk NOTE You cannot have a mix of HDD and SSD media on a virtual disk Also you cannot have a mix of SAS and SATA drives on the virtual disk Read Policy This property displays the read policy that the controller is using for this virtual disk See RAID Controller Read Write Cache and Disk Cache Policy Write Policy This property displays the write policy that the controller is using for this virtual disk See RAID Controller Read Write Cache and Disk Cache Policy Cache Policy This property displays the cache policy tha
189. l disk that was assigned as a hot spare on one controller and then moved to another controller The Import Foreign Configuration task imports the new physical disk as a hot spare If the physical disk was a dedicated hot spare on the previous controller but the virtual disk to which the hot spare was assigned is no longer present in the foreign configuration then the physical disk is imported as a global hot spare The Import Foreign Configuration task is only displayed when the controller has detected a foreign configuration You can also identify whether or not a physical disk contains a foreign configuration virtual disk or hot spare by checking the physical disk state If the physical disk state is Foreign then the physical disk contains all or some portion of a virtual disk or has a hot spare assignment If you have an incomplete foreign configuration which cannot be imported you can use the Clear Foreign Configuration task to erase the foreign data on the physical disks K NOTE The task of importing foreign configuration imports all virtual disks residing on physical disks that have been added to the controller If more than one foreign virtual disk is present you cannot choose which one to import All foreign configurations will be imported I mporting Recovering Foreign Configurations The recover operation attempts to restore degraded failed or missing virtual disks to a healthy state A virtual disk may be in a degraded fai
190. l disks so that the system s CPU is not burdened with the extra processing required to maintain the mirrored data When implementing mirroring on a PERC 4 IM controller you use the controller BIOS to create a virtual disk from the physical disks Unlike creating a virtual disk on other controllers the PERC 4 IM controller is able to implement a mirror for a physical disk that already contains data The data is then copied to the mirror Any data previously residing on the mirror is overwritten After you have created the integrated mirror using the controller BIOS the operating system sees the mirror as a virtual disk and a virtual disk object for the mirror is displayed in the Storage Management tree view Expanding the Virtual Disks object displays the disks included in the mirror These physical disks are no longer individually visible to the operating system K NOTE On replacing a SMART error drive with a good drive on PERC4 IM controllers it is necessary to perform a rescan operation on the controller for Storage Management to display the correct status of the newly inserted drive Background Initialization on PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di 4e Si and 4e Di Controllers On PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di 4e Si and 4e Di controllers background initialization of a redundant virtual disk begins automatically within O to 5 minutes after the virtual disk is created The background initialization of
191. l hot spare on a SAS 6 iR controller is likely to cause data loss from the physical disk If the system or boot partition resides on the physical disks it may be destroyed You should only assign physical disks that do not contain critical data For more information about global hot spares and the SAS 6 iR see Global Hot Spare Considerations on a SAS 6 iR You should be familiar with the size requirements and other considerations associated with hot spares See the following sections for more information Protecting Your Virtual Disk with a Hot Spare 1 Considerations for Hot Spares on PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di 4e Si 4e Di CERC ATA100 4ch PERC 5 E PERC 5 i PERC 6 E PERC 6 1 and CERC 6 1 Controllers Considerations for Hot Spares on PERC 3 Si 3 Di CERC SATA1 5 6ch S100 and 300 Controllers Global Hot Spare Considerations on a SAS 6 iR Online and Offline Does my controller support this feature See Supported Features The Online and Offline tasks only apply to physical disks that are included in a redundant virtual disk and attached to a PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e Si 4e Di 4e DC 4 Di or CERC ATA100 4ch controller Use the Offline task to deactivate a disk before removing it Use the Online task to reactivate an offline disk In some cases you may want to use the Online task on a failed disk in an attempt to recover data from the disk See Using the Phy
192. lability and Performance Choosing RAID Levels and Concatenation Comparing RAID Level and Concatenation Performance No RAID Storage Management uses Redundant Array of Independent Disks RAID technology to provide storage management capability Understanding storage management requires an understanding of RAID concepts as well as some familiarity with how your system s RAID controllers and operating system view disk space What Is RAI D RAID Redundant Array of Independent Disks is a technology for managing how data is stored on the physical disks that reside in your system or are attached to it A key aspect of RAID is the ability to span physical disks so that the combined storage capacity of multiple physical disks can be treated as single extended disk space Another key aspect of RAID is the ability to maintain redundant data which can be used to restore data in the event of a disk failure RAID uses different techniques such as striping mirroring and parity to store and reconstruct data There are different RAID levels that use different methods for storing and reconstructing data The RAID levels have different characteristics in terms of read write performance data protection and storage capacity Not all RAID levels maintain redundant data which means for some RAID levels lost data cannot be restored The RAID level you choose depends on whether your priority is performance protection or storage capacity NOTE The RAID
193. layed at the top of the left pane or select View gt Refresh from the browser s menu bar The new physical disk should be displayed in the tree view after refreshing the display If the new disk is not displayed restart the computer Related I nformation See Replacing a Failed Disk if you are replacing a disk that is part of a virtual disk 1 See Virtual Disk Considerations for PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di 4e Si 4e Di CERC ATA100 4ch PERC 5 E PERC 5 i PERC 6 E and PERC 6 I Controllers or Virtual Disk Considerations for PERC 3 Si 3 Di CERC SATA1 5 6ch and CERC SATA1 5 2s controllers if you are intending to include the new disk in a virtual disk How to Avoid Removing the Wrong Disk You can avoid removing the wrong disk by blinking the LED display on the disk that you intend to remove See the following sections for information on blinking the LED display See Blink and Unblink Physical Disk to blink the LED display on a physical disk 1 See Blink and Unblink Virtual Disk to blink the LED display on all physical disks included in a particular virtual disk If you have already removed the wrong disk see Recovering from Removing the Wrong Physical Disk Replacing a Physical Disk Receiving SMART Alerts SMART alerts are messages predicting that a disk may fail in the near future If a physical disk is receiving SMART alerts you should replace the disk Use the following
194. layed for each controller can vary depending on the controller characteristics Property Definition Status This property displays the controller status ID This property displays the controller ID as reported by the omreport CLI command Name This property displays the name of the controller For more detailed information on a controller click its name Slot ID This property displays the slot to which the controller is attached On some controllers Storage Management is unable to display the slot ID In this case this property displays Slot Not Available For embedded controllers this property displays Embedded NOTE If Slot Not Available is displayed you may be able to identify the slot ID by selecting the System gt Main System Chassis Slots object in the tree view and displaying the Information tab The Slot ID property on this tab may display the correct information State This property displays the current status of the controller Possible values are Ready The controller is functioning normally Degraded The controller has suffered a failure of a component and is operating in a degraded state Failed The controller has suffered a failure of one or more components and is no longer functioning Firmware Version This property displays the version of the controller s firmware The firmware and drivers listed in the Readme file refer to the minimum supported version for these controllers Later versions of the firm
195. le and FAST Compatibility ssues When Installing Storage Management To maintain the integrity of storage device configuration installing Storage Management on a system that has File and Storage Technologies FAST or the PowerEdge RAID Controller PERC Console installed is an unsupported configuration It is highly recommended that you uninstall FAST and the PERC Console before installing Storage Management In particular you may find that Storage Management or the FAST features are disabled at run time when using Storage Management on a system that also has FAST installed Storage Management replaces all storage management features provided by FAST and the PERC Console In addition Storage Management has features not provided by FAST and the PERC Console y NOTE It is highly recommended that you uninstall FAST before installing Storage Management Uninstalling FAST on a system that has both FAST and Storage Management installed will also uninstall the Adaptec filter driver In this situation you will need to reinstall Storage Management to restore the Adaptec filter driver To prevent this verify that FAST is uninstalled before installing Storage Management Compatibility With Linux Utilities Installing Storage Management on a Linux system that has RAID storage management utilities provided by Dell or other vendors is an unsupported configuration It is recommended that you uninstall these utilities before installing Storage Management
196. le if the controller does not have a physical disk that is a suitable hot spare for the virtual disk you are creating For example the available physical disks may be too small to protect the virtual disk If the Physical Disk check box is not available you may need to specify a smaller virtual disk use a different RAID level or change the disk selection 3 Do one of the following Click Span Edit to edit the spans created in Create Virtual Disk Advanced Wizard Step 2 of 4 I This option is available only if the controller is a SAS controller with firmware 6 1 and later and you selected RAID 10 Click Finish to create the virtual disk with the attributes shown on this screen 1 Click Go Back To Previous Page to return to Create Virtual Disk Advanced Wizard Step 3 of 4 if you want to change your selections Click Exit Wizard to cancel the virtual disk Span Edit In the edit mode you cannot alter the number of physical disks per span If there are enough available physical disks you can reduce or increase the number of spans You can also alter the contents of a span by removing that span and selecting a new physical disk to comprise that span To successfully create a virtual disk a minimum of two spans must exist at all times Click Continue to return to Create Virtual Disk Advanced Wizard Step 4 of 4 Virtual Disk Task Reconfigure Step 1 of 3 Does my controller support this feature See Supported
197. led or missing state after losing communication with the controller due to a power loss faulty cable connection or other failure A rebuild or background initialization may automatically initiate after the recover operation completes The virtual disk data may be inconsistent after recovery You should always verify the virtual disk data after the I mport Recover Foreign Configuration task completes In some cases the virtual disk data is incomplete and it is not possible to successfully recover the virtual disk To import or recover a foreign configuration Click Import Recover when you are ready to import or recover all virtual disks residing on physical disks attached to the controller To exit without importing or recovering the foreign configuration click Cancel To locate this task in Storage Management For SAS controllers with firmware versions 6 1 and later 1 Expand the Storage tree object to display the controller objects 2 Select a controller object 3 Select the Information Configuration subtab 4 Select Foreign Configuration Operations from the Controller Available Tasks drop down menu 5 Click Execute 6 On the Foreign Configuration Preview page click I mport Recover For controllers with firmware version 6 0 and earlier 1 Expand the Storage tree object to display the controller objects 2 Select a controller object 3 Select the Information Configuration subtab 4 Select Import Recover Foreign
198. led Protected option is only available if the controller has a functional battery The presence of a functional battery ensures that data can be written from the write cache to the physical disk even in the case of a power outage NOTE Storage Management does not allow you to select the Write Cache Enabled Protected policy for controllers that do not have a battery This restriction protects a controller without a battery from the data loss that may occur in the event of a power failure When using the Create Virtual Disk Advanced Wizard on a controller without a battery the wizard will either display Write Cache Disabled as the only available option or the wizard will display no option at all for write policy Write Cache Disabled This is the only available option if the controller does not have a functional battery Cache Policy Does my controller support this feature See Supported Features The Direct I O and Cache I O cache policies apply to reads on a specific virtual disk These settings do not affect the read ahead policy The cache policies are as follows Cache I O Specifies that all reads are buffered in cache memory Direct 1 0 Specifies that reads are not buffered in cache memory When using direct I O data is transferred to the controller cache and the host system simultaneously during a read request If a subsequent read request requires data from the same data block it can be read directly from the controller cach
199. ler Considerations Before Creating Virtual Disks Different controllers have particular characteristics in the way they implement virtual disks These characteristics may include use of disk space limitations on the number of virtual disks per controller and so on It can be helpful to understand these characteristics before creating virtual disks on the controller The following sections describe controller information that applies to virtual disks Virtual Disk Considerations for PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di 4e Si 4e Di CERC ATA100 4ch PERC 5 E PERC 5 i PERC 6 E and PERC 6 1 Controllers Virtual Disk Considerations for PERC 3 Si 3 Di CERC SATA1 5 6ch and CERC SATA1 5 2s controllers Problems Associated With Using the Same Physical Disks for Both Redundant and Nonredundant Virtual Disks Virtual Disk Considerations on Linux Number of Physical Disks per Virtual Disk Maximum Number of Virtual Disks per Controller Calculation for Maximum Virtual Disk Size and the Create Virtual Disk Express Wizard You may also want to review the following sections RAID Controller Read Write Cache and Disk Cache Policy Understanding Hot Spares Controller supported Stripe Sizes Rescan to Update Storage Configuration Changes Time Delay in Displaying Configuration Changes K NOTE In addition to this document review the hardware documentation that
200. ler to another unless the receiving controller s configuration has been cleared 1 When moving the physical disks on a SCSI controller from one enclosure to another the SCSI ID for each disk must remain the same See RAID Controller Technology SCSI SATA ATA and SAS for more information 1 When moving the physical disks from one enclosure to another or when moving an external enclosure from one server to another the enclosure must be connected to the same connector number on the controller as in the original condition 1 In the case where a virtual disk consists of physical disks on multiple connectors each physical disk must be migrated to an enclosure that is connected to the same connector number that the physical disk or enclosure was originally connected to SAS Controller Conditions On SAS controllers you can migrate a virtual disk by moving the physical disks from one controller to another and then importing the foreign configuration on the receiving controller See Foreign Configuration Operations for more information 1 When moving an enclosure on a SAS controller you can move the enclosure to any connector number and then import the foreign configuration on the receiving controller See Foreign Configuration Operations for more information Migrating SCSI Virtual Disks to Another System This section applies to the PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di 4e Si 4e Di and CERC ATA100 4ch cont
201. lers both redundant and nonredundant virtual disks reside on the same set of physical disks On the PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di and CERC ATA100 4ch controllers a rebuild is not performed for a physical disk that is used by both redundant and nonredundant virtual disks In order to rebuild the redundant virtual disk you need to delete the nonredundant virtual disk Before deleting this disk however you can attempt to recover data from the failed physical disk by forcing it back online See Using the Physical Disk Online Command on Select Controllers for more information A physical disk has been removed and the system has not yet attempted to write data to the removed disk In this case the system will not recognize the removal of a physical disk until it attempts a write operation to the disk If the physical disk is part of a redundant virtual disk then the system will rebuild the disk after attempting a write operation This situation applies to PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di and CERC ATA100 4ch controllers The virtual disk includes failed or corrupt physical disks This situation may generate alert 2083 For information on Alert Messages see the Dell OpenManage Server Administrator Messages Reference Guide on the Dell Support website at support dell com manuals The rebuild rate setting is too low If the rebuild rate setting is quite low and the system is processing a number of operations then th
202. lies to the PERC 3 Si 3 Di and CERC SATA1 5 6ch controllers See Format and Initialize Slow and Fast Initialize for more information Initializing The virtual disk is being initialized Initialization applies to the PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di 4e Si 4e Di and CERC ATA100 4ch controllers See Format and Initialize Slow and Fast Initialize for more information On some controllers the virtual disk state is not updated until the controller performs an I O operation See I O and Reboot Requirements for Detecting Physical Disk Status Changes for more information Degraded Redundancy This state is applicable to RAID 6 only in which a physical disk in a redundant virtual disk is not online but the virtual disk is still accessible and functioning This property displays whether the virtual disk has bad blocks This property displays whether the virtual disk is secured The possible values are Yes and No This property displays whether the Hot Spare Protection Policy has been violated NOTE This property is displayed only if you set any Hot Spare Protection Policy For more information see Setting Hot Spare Protection Policy This property displays the RAID level This property displays the total capacity of the virtual disk The algorithm for calculating the virtual disk size rounds a value of 0 005 or less down to 0 00 and a value between 0 006 and 0 009 up to 0 01 For example a virtua
203. lize task applies to the PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di 4e Si 4e Di and CERC ATA100 4ch controllers These controllers also have a Cancel Initialize and Background Initialization feature For more information see Format and Initialize Slow and Fast Initialize and Background Initialization on PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di 4e Si and 4e Di Controllers K NOTE A fast initialization on the PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di 4e Si 4e Di and CERC ATA100 4ch controllers may occur so quickly that the virtual disk s State does not display Initializing Use the controller BIOS to change the initialization settings Considerations for Fast Initialize Use the Fast Initialize task to initialize all physical disks included in the virtual disk The Fast Initialize task updates the metadata on the physical disks so that all disk space is available for future write operations The initialize can be completed quickly because existing information on the physical disks is not erased although future write operations will overwrite any information that remains on the physical disks K NOTE Doing a Fast Initialize causes existing data to be inaccessible This task should be considered data destructive In comparison with the Slow Initialize task the Fast Initialize task has the following advantages The Fast Initialize task takes less time to complete The Fast Initialize task does not write zero
204. ller Properties drop down menu For more information see Change Controller Properties Related I nformation 1 Set Patrol Read Mode Change Controller Properties Does my controller support this feature See Supported Features The Change Controller Properties task provides you the option to change multiple controller properties simultaneously This task is available only on SAS controllers with firmware version 6 1 and later You can change any or all of the following properties using the Change Controller Properties task 1 Rebuild Rate BGI Rate 1 Check Consistency Rate 1 Reconstruct Rate Abort check consistency on error 1 Revertible Hot Spare 1 Loadbalance Auto replace member on predictive failure Redundant path view 74 NOTE You can set these properties through the command line interface also See the Dell OpenManage Server Administrator Command Line Interface User s Guide on the Dell Support website at support dell com manuals for more information To locate this task in Storage Management do one of the following 1 Select Storage in the Storage tree 2 On the Storage Dashboard page select Change Controller Properties from the Available Tasks drop down menu 3 Click Execute Or 1 Expand the Storage tree object to display the controller objects 2 Select a controller object 3 Select the Information Configuration subtab 4 Select Change Controller Properties from the
205. med by a stripe element For example consider a stripe that contains 64KB of disk space and has 16KB of data residing on each disk in the stripe In this case the stripe element size is 16KB and the stripe size is 64KB Parity Parity refers to redundant data that is maintained using an algorithm in combination with striping When one of the striped disks fails the data can be reconstructed from the parity information using the algorithm Span A span is a RAID technique used to combine storage space from groups of physical disks into a RAID 10 50 or 60 virtual disk RAID Levels Each RAID level uses some combination of mirroring striping and parity to provide data redundancy or improved read and write performance For specific information on each RAID level see Choosing RAID Levels and Concatenation Organizing Data Storage for Availability and Performance RAID provides different methods or RAID levels for organizing the disk storage Some RAID levels maintain redundant data so that you can restore data after a disk failure Different RAID levels may also entail an increase or decrease in the system s I O read and write performance Maintaining redundant data requires the use of additional physical disks As more disks become involved the likelihood of a disk failure increases Because of the differences in I O performance and redundancy one RAID level may be more appropriate than another based on the applications in the o
206. ment Command Line Interface Displaying the Online Help Common Storage Tasks Dell OpenManage Server Administrator Storage Management is designed for system administrators who implement hardware RAID solutions and understand corporate and small business storage environments Storage Management enables you to configure the storage components attached to your system These components include RAID and non RAID controllers and the channels ports enclosures and disks attached to them Using Storage Management you can configure and manage controller functions without accessing the BIOS These functions include configuring virtual disks and applying RAID levels and hot spares for data protection You can initiate many other controller functions such as rebuilds troubleshooting setting thresholds and so on Most functions can be configured and managed while the system remains online and continues to process requests Storage Management reports the status of storage components When the status for a component changes Storage Management updates the display for that component and sends an alert to the Alert Log In addition to status changes Storage Management generates alerts for user actions such as creating or deleting a virtual disk and for many other events Most alerts also generate SNMP traps Other than monitoring and reporting status Storage Management does not automatically initiate actions independent of user input Automatic shu
207. n Displaying Configuration Changes When you change the storage configuration Storage Management quickly generates SNMP traps in response to the configuration changes The Storage Management MIB Management Information Base is also updated to reflect storage configuration changes However it may take up to five minutes to update the MIB with the most recent storage configuration For this reason there is a time delay of up to five minutes between the receipt of an SNMP trap and the ability to identify the configuration changes by querying the Storage Management MIB This time delay is particularly notable when creating a new virtual disk or performing an unmirror or split mirror on a RAID 1 concatenated virtual disk You can minimize this time delay by performing a controller rescan See Rescan Controller for more information I O and Reboot Requirements for Detecting Physical Disk Status Changes This section applies to PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di 4e Si 4e Di and CERC ATA100 4ch controllers Because of hardware restrictions the PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di 4e Si 4e Di and CERC ATA100 4ch controllers will not detect a physical disk status change until I O is attempted or the system is rebooted If the controller has an open communication path to the disk then performing an I O operation on the controller updates the disk status For example when an unconfigured disk is removed the controlle
208. n includes the current temperature in Celsius and the Warning and Failure thresholds for the temperature probe The Failure threshold has a default value that cannot be changed You can set the Warning threshold however See Set Temperature Probe Values for information on setting the warning threshold For information related to the enclosure s temperature see the following 1 Checking the Enclosure s Temperature 1 Set Temperature Probe Values 1 Temperature Probe Properties and Tasks 1 SMART Thermal Shutdown Enclosure Management Modules EMMs The Enclosure Management Modules EMMs that are installed in the enclosure are displayed under the EMMs object in the tree view You can select the EMMs object to display the individual EMM modules and their status information The enclosure may contain one or more EMMs The EMM modules monitor components of the enclosure These components include Fans 1 Power supplies Temperature probes The insertion or removal of a physical disk 1 The LEDs on the enclosure When the enclosure s alarm is enabled the EMM activates the alarm when certain conditions occur For more information on enabling the alarm and the conditions that activate the alarm see Enable Alarm Enclosure For more information on EMMs see the enclosure hardware documentation All EMM modules in the enclosure should have the same version of firmware You can view the properties of each indivi
209. n is in Offline state the value for the Speed property is Unknown For information on events that cause the fan speed to change refer to the hardware documentation Power Supply Properties Use this window to view information about the enclosure s power supplies Property Definition Status These icons represent the severity or health of the storage component Normal OK Warning Non critical Critical Fatal See Storage Component Severity for more information Name This property displays the name of the power supply State This property displays the current status of the power supply Ready The power supply is functioning normally Degraded The power supply has encountered a failure and is operating in a degraded state Failed The power supply has encountered a failure and is no longer functioning Storage Management may also be unable to communicate with the enclosure using SES commands The Failed state is displayed when the enclosure does not respond to a status query from Storage Management for any reason For example disconnecting the cable would cause this state to be displayed Missing The power supply is not present in the enclosure Part This property displays the part number of the power supply Number This property is not displayed for the PowerVault 22xS enclosures that have E 17 firmware or later Temperature Probe Properties and
210. ncatenation enables the operating system to view multiple physical disks as a single disk Data stored on a single disk can be considered a simple volume This disk could also be defined as a virtual disk that comprises only a single physical disk Data that spans more than one physical disk can be considered a spanned volume Multiple concatenated disks can also be defined as a virtual disk that comprises more than one physical disk A dynamic volume that spans to separate areas of the same disk is also considered concatenated When a physical disk in a concatenated or spanned volume fails the entire volume becomes unavailable Because the data is not redundant it cannot be restored by rebuilding from a mirrored disk or parity information Restoring from a backup is the only option Because concatenated volumes do not use disk space to maintain redundant data they are more cost efficient than volumes that use mirrors or parity information A concatenated volume may be a good choice for data that is temporary easily reproduced or that does not justify the cost of data redundancy In addition a concatenated volume can easily be expanded by adding an additional physical disk Figure 3 1 Concatenating Disks Concatenates n disks as one large virtual disk with a capacity of n disks Data fills up the first disk before it is written to the second disk 1 No redundancy data is kept When a disk fails the large virtual disk fails No perfo
211. nctioning normally Degraded The EMM has encountered a failure and is operating in a degraded state Failed The EMM has encountered a failure and is no longer functioning Storage Management may also be unable to communicate with the enclosure using SES commands The Failed state is displayed when the enclosure does not respond to a status query from Storage Management for any reason For example disconnecting the cable would cause this state to be displayed Missing The EMM is not present in the enclosure Not Installed The EMM is not present in the enclosure This property displays the part number of the EMM module Type This property indicates whether the EMM is a SCSI SES Module or a SCSI Terminator SCSI SES Module A SCSI SES Module provides SES and SAFTE reporting to the host server control of all system LED indicators and monitoring of all environmental elements such as temperature sensors cooling modules and power supplies SCSI Terminator The SCSI Terminator card is only used if the PowerVault 220S or PowerVault 221S enclosure is not configured with a redundant SCSI SES Module type of EMM In systems equipped with two SCSI SES Modules the SCSI termination is done through the EMMs Firmware This property indicates the version of the firmware loaded on the EMM All EMM modules in the enclosure should have the same level of Version firmware SCSI Rate This property displays the maximum SCSI speed
212. nd firmware requirements Number of Connector This property displays the number of connectors the controller has Each connector can be attached to physical disks or an enclosure Depending on the controller type the connector can be either a SCSI channel or a SAS port Rebuild Rate The rebuild rate is the percentage of the system s resources dedicated to rebuilding a failed disk when a rebuild is necessary See Set Rebuild Rate for more information Alarm State This property displays whether the controller s alarm is enabled or disabled Cluster Mode This property indicates whether the controller is part of a cluster configuration SCSI Initiator ID This property displays the SCSI ID of a SCSI controller The default value is usually 7 You can change the default value in the BIOS Controllers in a cluster configuration should not have duplicate SCSI Initiator IDs Refer to SCSI documentation for a list of acceptable SCSI Initiator ID values On some controllers this property is not available In this case this property displays as Not Applicable Storage Components For information on attached controllers see the following topics 1 Controller Properties and Tasks 1 Controllers Back to Contents Page Back to Contents Page Understanding RAI D Concepts Dell OpenManage Server Administrator Storage Management User s Guide What Is RAID Organizing Data Storage for Avai
213. ndicates the range that you can specify 5 Click Apply Changes If you want to return the temperature probe s Warning threshold to the default values select the Reset to default values button and click Apply Changes The default values are displayed in the Minimum Warning Threshold and Maximum Warning Threshold text boxes K NOTE On some enclosures Storage Management may experience a short delay before displaying the current enclosure temperature and temperature probe status For more information see Storage Management May Delay Before Updating Temperature Probe Status To locate this task in Storage Management 1 Expand the Storage tree object to display the controller objects 2 Expand a controller object 3 Expand a Connector object 4 Select the enclosure object 5 Select the Information Configuration subtab 6 Select Set Temperature Probe Values from the Available Tasks drop down menu 7 Click Execute EMM Properties Use this window to view information about the Enclosure Management Modules EMMs Property Status Name State Part Number Definition These icons represent the severity or health of the storage component Normal OK Warning Non critical Critical Fatal See Storage Component Severity for more information This property displays the name of the EMM This property displays the current state of the EMMs Ready The EMM is fu
214. ndition Battery task is only available on controllers with NiMHi batteries that are in Degraded state or that have generated alert 2145 For information on Alert Messages see the Dell OpenManage Server Administrator Messages Reference Guide on the Dell Support website at support dell com manuals Some controllers do not have batteries Other controllers have lithium ion batteries which are automatically reconditioned and therefore do not have a recondition task in Storage Management Related information 1 Battery Properties Start Learn Cycle Does my controller support this feature See Supported Features Use the Start Learn Cycle task to initiate the battery Learn cycle The battery Learn cycle discharges and then fully charges the controller battery The Learn cycle recalibrates the battery integrated circuit so that the controller can determine whether the battery can maintain the controller cache for the prescribed period of time in the event of a power loss For example some controller batteries are required to maintain the controller cache for 72 hours While the Learn cycle is in progress the battery may not be able to maintain the cache during a power loss If the controller is using write back cache policy then the controller changes to write through cache policy until the Learn cycle completes The write through cache policy writes the data directly to the disk and reduces the risk that data can be lost in the cache if there
215. ne object by expanding the controller and Connector object in the Storage Management tree view Storage Management displays the status of the backplane and attached physical disks Although a backplane is similar to an enclosure in that it is attached to a controller connector and has physical disks it does not have the management features temperature probes alarms and so on associated with external enclosures Enclosures Storage Management enables management of various enclosures and their components In addition to managing the physical disks contained in the enclosure you can monitor the status of the enclosure s fans power supply and temperature probes You can view these components by expanding the controller Connector and enclosure objects in the Storage Management tree view Storage management allows hot plugging of enclosures Hot plugging is defined as the adding of a component to a system while the operating system is still running NOTE This feature requires that the physical devices connected to the controller have the latest firmware For the latest supported firmware see the Dell Support website at support dell com After you hot plug or hot reconfigure an enclosure refresh the left tree to display changes in status and configuration a system reboot is not required K NOTE Storage Management does not allow hot removal of enclosures You must reboot the system to effect this change in Storage Management Storage M
216. ng a Physical Disk Receiving SMART Alerts You may also want to review the Alert Log to see whether the physical disk has generated alerts pertaining to a SMART predictive failure These alerts can assist you in identifying the cause of the SMART alert The following alerts may be generated in response to a SMART alert 2094 2106 2107 2108 2109 2110 2111 For information on Alert Messages see the Dell OpenManage Server Administrator Messages Reference Guide on the Dell Support website at support dell com manuals Progress This property displays how close to completion an operation is that is being performed on the physical disk For example if the physical disk is being rebuilt then a value of 52 indicates that the rebuild is 52 complete This property is only displayed when an operation is being performed on the physical disk Encryption This property displays whether the physical disk is a Self Encryption Disk SED The possible values are Yes and No Capable Secured This property displays whether the physical disk is secured to the controller The possible values are Yes and No For a non SED the value is N A Bus Protocol This property displays the technology that the physical disk is using Possible values are SCSI Small Computer System Interface SAS Serial Attached SCSI SATA Serial Advanced Technology Attachment SATA Media This property displays the media type of the physical disk The possible val
217. ntrollers Battery Task Name Non RAID SCSI Non RAID SAS Recondition Battery Connector Tasks Table A 55 Connector Tasks Supported on the Non RAID Controllers Connector Task Name Non RAID SCSI Non RAID SAS Physical Disk Tasks Table A 56 Physical Disk Tasks Supported on the Non RAID Controllers Physical Disk Task Name Non RAID SCSI Non RAID SAS Blink Unblink Yes Assign and Unassign Global Hot Spare Prepare to Remove Offline Online Initialize Rebuild Cancel Rebuild Remove Dead Disk Segments Format Disk Clear Cancel Clear Virtual Disk Tasks Table A 57 Virtual Disk Tasks Supported by the Non RAID Controllers Virtual Disk Task Name Non RAID SCSI Non RAID SAS Assign and Unassign Dedicated Hot Spare N Create Virtual Disk Create Virtual Disk Advanced Wizard No Create Virtual Disk Express Wizard Rename Blink Unblink Reconfigure Change Policy Split Mirror Unmirror Delete Last Virtual Disk Delete any Virtual Disk Check Consistency ZI2Z 27 272 2 2 2 2 2 ca o fotlofofTo fo fofofof to o jo Cancel Check Consistency Pause Check Consistency Resume Check Consistency Cancel Background Initialization BGI Format Virtual Disk Cancel Format Virtual Disk Restore Dead Disk Segments Initialize Virtual Disk Fast Initialize Virtual Disk Slow Initialize Virtual Disk
218. o be in normal condition select the Information Configuration subtab of the enclosure to view details of the Path Failure Clearing the Redundant Path View If you do not want the redundant path view physically disconnect the connector port from the enclosure and reboot the system After the system reboots the user interface will still display the Logical Connector but in a critical state If you are certain you do not want the redundant path mode select Clear Redundant Path view from the Connector Tasks Selecting this option clears the redundant path view and the connectors are represented on the user interface as Connector 0 and Connector 1 Related Tasks 1 Redundant Path Configuration Logical Connector Components For information on attached components see the following topic Enclosure and Backplane Properties and Tasks Back to Contents Page Back to Contents Page Controllers Dell OpenManage Server Administrator Storage Management User s Guide What is a Controller Export Log RAID Controller Technology SCSI SATA ATA and SAS Foreign Configuration Operations RAID Controller Features importing Foreign Configurations mporting Recovering Foreign Configurations Controller supported Stripe Sizes Clear Foreign Configuration Controller supported RAID Levels RAID Controller Read Write Cache and Disk Cache Policy Physical Disks in Foreign Virtual Disks Clus
219. olicy is violated NOTE The status of the virtual disk is determined by the severity level you specify for this policy Resetting the Hot Spare Protection Policy Deselect the RAID Layout to reset the dedicated hot spare protection policy Global Hot Spare Protection Polic Property Definition Enable Global Hot Spare Select this check box to enable the Global Hot Spare Protection Policy Minimum Number of Disks The minimum number of physical disks to be assigned as global hot spares for the controller Severity Level The severity level you want to assign to the generated alert if this policy is violated Consider Global Hot Spare Policy when determining Select this check box if you want Storage Management to consider this policy to determine the Virtual Disk status status of the virtual disk The status of the virtual disk is determined by the severity level you specify for this policy K NOTE When assigning a global hot spare consider a physical disk that has higher capacity which can replace any failed disk in the controller Considerations for Hot Spare Protection Policy 1 The dedicated hot spare protection policy is not applicable to SCSI SAS iR PERC H200 and CERC SATA 6ch 2s controllers RAID 0 does not support assigning hot spares Also the protection policy is not applicable for RAID 0 For SAS iR and PERC H200 family of controllers you can assign only two global hot spares If
220. oller firmware does not meet the minimum requirement The firmware and drivers listed in the Readme file refer to the minimum supported version for these controllers Later versions of the firmware and drivers are also supported See the Dell Support website at support dell com for the most recent driver and firmware requirements This property displays the version of the driver that is currently installed on the controller The 2 8 0 6085 driver install package for the PERC 3 Si and 3 Di controllers contains the 6076 driver For this driver Storage Management displays 2 8 0 6076 whereas Microsoft Windows Device Manager displays 2 8 0 6085 NOTE On some controllers Storage Management may not be able to obtain the driver version In this case Storage Management displays Not Applicable This property displays the minimum driver version that is required by Storage Management This property is only displayed if the controller driver does not meet the minimum requirement The firmware and drivers listed in the Readme file refer to the minimum supported version for these controllers Later versions of the firmware and drivers are also supported See the Dell Support website at support dell com for the most recent driver and firmware requirements This property displays the version of the storport driver that is installed on the system This property displays the minimum storport driver version required by Storage Management This property
221. oller object 3 Expand a Connector object 4 Select the enclosure object 5 Select the Information Configuration subtab 6 Select a task from the Available Tasks drop down menu 7 Click Execute Drop down Menu Enclosure Tasks Enable Alarm Enclosure Disable Alarm Enclosure 1 Set Asset Data 1 Blink 1 Set Temperature Probe Values Enable Alarm Enclosure Does my enclosure support this feature See Supported Features Use the Enable Alarm task to enable the enclosure alarm When enabled the audible alarm sounds whenever the fault LED lights This may occur to signal events such as The enclosure temperature has exceeded the warning threshold A power supply fan or enclosure management module EMM has failed The split bus is not installed A split bus is indicated by a single triangle symbol on the back of the enclosure Disable Alarm Enclosure Does my enclosure support this feature See Supported Features Use the Disable Alarm task to disable the enclosure alarm When disabled the alarm does not sound when the enclosure exceeds a warning threshold for temperature or experiences other error conditions such as a failed fan power supply or controller If the alarm is already sounding you can turn it off with this task Set Asset Data Does my enclosure support this feature See Supported Features Use the Set Asset Data task to specify the enclosure s
222. onal with up to two disk failures o Select RAID 10 for striping over mirror sets This selection groups n disks together as one large virtual disk with a total capacity of n 2 disks Data is striped across the replicated mirrored pair disks When a disk fails the virtual disk continues to function The data is read from the surviving mirrored pair disk This feature provides the best failure protection read and write performance Your system must have at least four disks to use RAID 10 2 Type the size for the reconfigured virtual disk in the Size text box The minimum and maximum allowable size is displayed under the Size text box These values reflect the new capacity of the virtual disk after any addition or deletion of physical disks which you may have chosen in Virtual Disk Task Reconfigure Step 1 of 3 GZ NOTE On the CERC SATA1 5 2s controller you must specify the maximum virtual disk size K NOTE The PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di 4e Si 4e Di and CERC ATA100 4ch controllers do not allow you to change or reconfigure the virtual disk size K NOTE The PERC S100 and S300 controllers do not allow you to change the RAID level 3 Click Continue to go to the next screen or Exit Wizard if you want to cancel Virtual Disk Task Reconfigure Step 3 of 3 Does my controller support this feature See Supported Features This screen enables you to review your changes before completing the virtual
223. onents 1 Logical Connector Properties 1 M Manage Preserved Cache 1 Migrating Virtual Disks 1 Mirroring 1 integrated 1 Mirroring defined 1 Moving Physical Disks 1 Moving Virtual Disks 1 o omconfig Battery Commands 1 omconfig Connector Commands 1 omconfig Controller Commands 1 omconfig Enclosure Commands 1 omconfig Global Commands 1 omconfig Physical Disk Commands 1 omconfig Virtual Disk Commands 1 Online and Offline 1 P Parity 1 PERC 2 SC 2 DC 3 SC 3 DC 3 QC 4 Di CERC ATA100 4ch controllers RAID configuration 1 PERC 2 SC 2 DC 3 SC 3 DC 3 QC 4 SC 4 DC 4 Di controllers limitations 1 PERC 4 IM 1 PERC S100 and S300 Controllers Considerations for Hot Spares 1 Supported Features 1 Virtual Disk Considerations 1 Physical Disk Properties 1 Power Supply Properties 1 Prepare to Remove 1 Q Quiet Alarm Controller 1 R RAID level 0 striped 1 RAID level 1 mirrored 1 RAID level 10 mirrored striped 1 RAID level 1 concatenated concatenated mirror 1 RAID level 50 concatenated distributed parity 1 RAID level 6 striping with additional distributed parity 1 RAID level 60 striping over RAID 6 sets 1 RAID levels 3 and 5 striped with parity 1 Rebuild 1 Recondition Battery 1 Reconfigure 1 Reconfiguring a virtual disk ne Reconfiguring Virtual Disks 1 Recovering Foreign Configurations 1 Redundant Path Configuration 1 Remove Dead Segments 1 Replace Member Disk 1 R
224. onfiguration Operations for more information Set Rebuild Rate Does my controller support this feature See Supported Features The Set Rebuild Rate task changes the controller s rebuild rate During a rebuild the complete contents of a physical disk are reconstructed The rebuild rate configurable between 0 and 100 represents the percentage of the system resources dedicated to rebuilding failed physical disks At 0 the rebuild will have the lowest priority for the controller will take the most time to complete and will be the setting with the least impact to system performance A rebuild rate of 0 does not mean that the rebuild is stopped or paused At 100 the rebuild will be the highest priority for the controller will minimize the rebuild time and will be the setting with the most impact to system performance On the PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di 4e Si 4e Di and CERC ATA100 4ch controllers the controller firmware also uses the rebuild rate setting to control the system resource allocation for the following tasks For these controllers the rebuild rate setting applies to these tasks in the same manner that it applies to the Rebuild task 1 Check Consistency Background Initialization see Cancel Background Initialization Full Initialization A BIOS setting determines whether a full or fast initialization occurs See Format and Initialize Slow and Fast Initialize Reconf
225. or at certain times For example a Check Consistency task can only be performed on a redundant virtual disk Similarly if a disk is already offline the Offline task option is not displayed There may be other reasons why a task cannot be run at a certain time For example there may already be a task running on the object that must complete before additional tasks can be run A Corrupt Disk or Drive Message Suggests Running autocheck During a Reboot Let autocheck run but do not worry about the message The reboot will complete after autocheck is finished Depending on the size of your system this may take about ten minutes Erroneous Status and Error Messages after a Windows Hibernation Activating the Windows hibernation feature may cause Storage Management to display erroneous status information and error messages This problem resolves itself when the Windows operating system recovers from hibernation Storage Management May Delay Before Updating Temperature Probe Status In order to display the enclosure temperature and temperature probe status Storage Management polls the enclosure firmware at regular intervals to obtain temperature and status information On some enclosures there is a short delay before the enclosure firmware reports the current temperature and temperature probe status Because of this delay Storage Management may require one or two minutes before displaying the correct temperature and temperature probe status Stora
226. ormation see Redundant path view Auto replace on In case of predictive failure this property enables the automatic copying of data from a physical disk to a hot spare Use this property in predictive failure conjunction with the Revertible Hot Spare property Redundant path Indicates whether Storage Management has detected a redundant path configuration Storage Management detects a redundant path view configuration when both controller ports are connected to the same enclosure that is in a unified mode For more information see Redundant Path Configuration Security Capable Indicates whether the controller has the capability to support security Possible values are Yes and No Security Key Indicates whether the controller has a Security Key established Possible values are Yes and No Present Cache Memory This property displays the size of the controller s cache memory Size Patrol Read Mode This property displays the Patrol Read mode setting for the controller Possible values are Auto When set to Auto a Patrol Read runs continuously on the system When one iteration of the Patrol Read is complete the next Patrol Read is scheduled to start within a period of time specified by the controller You do not have the option of manually starting or stopping the Patrol Read in Auto mode Manual When set to Manual you can start or stop the Patrol Read process Disabled This property indicates that the Patrol R
227. orted on non RAID SCSI controllers You must reboot the system before Storage Management can see configuration changes on non RAID SCSI controllers Otherwise configuration changes are not reflected in the Storage Management graphical user interface GUI To rescan a controller 1 Expand the tree view to display the controller object 2 Select the Controller object 3 Click the Configuration Information subtab 4 Select Rescan from the Controller Tasks drop down menu 5 Click Execute You can also locate this task from the Change Controller Properties drop down menu For more information see Change Controller Properties Create Virtual Disk Does my controller support this feature See Supported Features Use the Create Virtual Disk task to launch the Create Virtual Disk Express Wizard See Create Virtual Disk Express Wizard Step 1 of 2 for more information Enable Alarm Controller Does my controller support this feature See Supported Features Use the Enable Alarm task to enable the controller s alarm When enabled the alarm sounds in the event of a device failure Disable Alarm Controller Does my controller support this feature See Supported Features Use the Disable Alarm task to disable the controller s alarm When disabled the alarm does not sound in the event of a device failure Quiet Alarm Controller Does my controller support this feature See Supported Features U
228. ours to fully charge the battery The controller can be used during this time however the battery is unable to meet the specified holdover time until it is fully charged The battery is still able to handle brief power losses during the initial charge cycle There are two types of controller batteries 1 NiMHi batteries Li lon batteries The NiMHi batteries need to be reconditioned approximately every six months to maintain reliability See Recondition Battery for more information A battery recondition fully discharges and then recharges the battery When the battery needs reconditioning the controller reports its state as Degraded In addition the controller may generate event 2145 to indicate that the battery needs reconditioning For information on Alert Messages see the Dell OpenManage Server Administrator Messages Reference Guide on the Dell Support website at support dell com manuals The Li lon or lithium ion batteries are automatically reconditioned by the controller These batteries do not require that you run the battery recondition task To see which type of battery the RAID controller has refer to the documentation that came with the controller All RAID controller batteries should be replaced every three years You should also monitor the Recharge Count and Max Recharge Count properties for the battery See Battery Properties for more information These properties indicate when the battery is approaching the maximum numbe
229. ower write performance Increased redundancy provides greater data protection than a RAID 50 Requires proportionally as much parity information as RAID 6 Two disks per span are required for parity RAID 60 is more expensive in terms of disk space Related Information See the following 1 Organizing Data Storage for Availability and Performance 1 Comparing RAID Level and Concatenation Performance 1 Controller supported RAID Levels 1 Number of Physical Disks per Virtual Disk 1 Maximum Number of Virtual Disks per Controller RAID Level 10 Striping over mirror sets The RAB considers RAID Level 10 to be an implementation of RAID level 1 RAID 10 combines mirrored physical disks RAID 1 with data striping RAID 0 With RAID 10 data is striped across multiple physical disks The striped disk group is then mirrored onto another set of physical disks RAID 10 can be considered a mirror of stripes Figure 3 8 Striping Over Mirrored Disk Groups RAID 10 Characteristics Groups n disks as one large virtual disk with a capacity of n 2 disks where n is an even integer Mirror images of the data are striped across sets of physical disks This level provides redundancy through mirroring When a disk fails the virtual disk is still functional The data will be read from the surviving mirrored disk Improved read performance and write performance Redundancy for protection of dat
230. perating environment and the nature of the data being stored When choosing concatenation or a RAID level the following performance and cost considerations apply Availability or fault tolerance Availability or fault tolerance refers to a system s ability to maintain operations and provide access to data even when one of its components has failed In RAID volumes availability or fault tolerance is achieved by maintaining redundant data Redundant data includes mirrors duplicate data and parity information reconstructing data using an algorithm Performance Read and write performance can be increased or decreased depending on the RAID level you choose Some RAID levels may be more appropriate for particular applications Cost efficiency Maintaining the redundant data or parity information associated with RAID volumes requires additional disk space In situations where the data is temporary easily reproduced or non essential the increased cost of data redundancy may not be justified Mean Time Between Failure MTBF Using additional disks to maintain data redundancy also increases the chance of disk failure at any given moment Although this cannot be avoided in situations where redundant data is a requirement it does have implications for the workload of your organization s system support staff 1 Volume Volume refers to a single disk non RAID virtual disk You can create volumes using external utilities like the O ROM CtrI R
231. performance o Select RAID 0 for striping This selection groups n disks together as one large virtual disk with a total capacity of n disks Data is stored to the disks alternately so that they are evenly distributed Data redundancy is not available in this mode Read and write performance is enhanced o Select RAID 1 for mirroring disks This selection groups two disks together as one virtual disk with a capacity of one single disk The data is replicated on both disks When a disk fails the virtual disk continues to function This feature provides data redundancy and good read performance but slightly slower write performance Your system must have at least two disks to use RAID 1 o Select RAID 5 for striping with distributed parity This selection groups n disks together as one large virtual disk with a total capacity of n 1 disks When a disk fails the virtual disk continues to function This feature provides better data redundancy and read performance but slower write performance Your system must have at least three disks to use RAID 5 o Select RAID 6 for striping with additional distributed parity This selection groups n disks as one large virtual disk with a capacity of n 2 disks The virtual disk remains functional with up to two disk failures RAID 6 provides better read performance but slower write performance Your system must have at least four disks to use RAID 6 o Select RAID 10 for striping over mirror sets This sele
232. perty displays the name of the controller State This property displays the current status of the controller Possible values are Ready The controller is functioning normally Degraded The controller has encountered a failure and is operating in a degraded state Failed The controller has encountered a failure and is no longer functioning Firmware Version This property displays the version of the firmware that is currently installed on the controller NOTE On some controllers Storage Management may not be able to obtain the firmware version In this case Storage Management displays Not Applicable Minimum Required This property displays the minimum firmware version that is required by Storage Management This property is only displayed if the Firmware Version controller firmware does not meet the minimum requirement The firmware and drivers listed in the Readme file refer to the minimum supported version for these controllers Later versions of the firmware and drivers are also supported See the Dell Support website at support dell com for the most recent driver and firmware requirements Driver Version This property displays the version of the driver that is currently installed on the controller The 2 8 0 6085 driver install package for the PERC 3 Si and 3 Di controllers contains the 6076 driver For this driver Storage Management
233. previously available are now replaced with one Logical Connector In a daisy chain scenario more than one enclosure can be connected to a controller in a redundant path mode You can connect up to three PowerVault MD1000 and MD1120 to a PERC 6 E controller in a daisy chained enclosure And you can connect up to four PowerVault MD1200 and MD1220 to a PERC H800 controller in a daisy chained enclosure See the figure below for an example of a daisy chain configuration for PERC 6 E controller If the communication channel between the connector and the first enclosure is lost the redundant path configuration itself is lost In this case the health of the logical connector is displayed as critical Navigate to the Information Configuration subtab of the logical connector to view details of the Path Health See the table below for a brief outline of this scenario Health of Logical Connector Path between Controller and Enclosure 1 Connector 0 CO Connector 1 C1 Available Available Available Available However if the communication channel between any two enclosures is lost the redundant path configuration is degraded and the health of the logical connector is displayed as degraded See the table below for a brief outline of this scenario Health of Logical Connector Path between Enclosure n and Enclosure n 1 Connector 0 CO Connector 1 C1 Available Available Available Disconnected
234. procedures to replace a disk receiving SMART alerts If the disk is part of a redundant virtual disk 1 Select the redundant virtual disk that includes the physical disk that is receiving SMART alerts and perform the Check Consistency task See Check Consistency for more information A CAUTI ON To avoid potential data loss you should perform a check consistency before removing a physical disk that is receiving SMART alerts The check consistency verifies that all data is accessible within the redundant virtual disk and uses the redundancy to repair any bad blocks that may be present In some circumstances failure to perform a check consistency can result in data loss This may occur for example if the physical disk receiving SMART alerts has bad disk blocks and you do not perform a check consistency before removing the disk 2 Select the disk that is receiving SMART alerts and execute the Offline task 3 Manually remove the disk 4 Insert a new disk Make sure that the new disk is the same size or larger as the disk you are replacing On some controllers you may not be able to use the additional disk space if you insert a larger disk See Virtual Disk Considerations for PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di 4e Si 4e Di CERC ATA100 4ch PERC 5 E PERC 5 i PERC 6 E and PERC 6 1 Controllers for more information After you complete this procedure a rebuild is automatically initiated because the virtual disk is redundant
235. r does not have a battery and force write back caching is used data loss may occur in the event of a power failure Write Back Enabled When using write back enabled caching the controller firmware disables the write cache if it does not detect the presence of a charged battery over a specified period of time For example on some controllers the write cache is disabled if the firmware cannot detect a charged battery within 72 hours Write Through When using write through caching the controller sends a write request completion signal only after the data is written to the disk Write through caching provides better data security than write back caching since the system assumes the data is available only after it has been safely written to the disk NOTE Write through is the default write policy setting when cluster mode is enabled In cluster mode the PERC 3 DC 4 DC and 4e DC controllers only allow write through caching Write Cache Enabled Protected When the write cache is enabled the controller writes data to the write cache before writing data to the physical disk Because it takes less time to write data to the write cache than it does to a disk enabling the write cache can improve system performance After data is written to the write cache the system is free to continue with other operations The controller in the meantime completes the write operation by writing the data from the write cache to the physical disk The Write Cache Enab
236. r and firmware requirements K NOTE To download the latest storport driver see the Microsoft Knowledge Base article at support microsoft com kb 943545 If you install Storage Management without the minimum required firmware and drivers Storage Management may not be able to display any of the controllers or perform other functions Storage Management generates alerts 2131 and 2132 when it detects unsupported firmware or drivers on a controller For information on Alert Messages see the Dell OpenManage Server Administrator Messages Reference Guide on the Dell Support website at support dell com manuals Supported Controllers This release of Storage Management supports the following controllers The firmware and drivers listed in the Readme file refer to the minimum supported version for these controllers Later versions of the firmware and drivers are also supported See the Dell Support website at support dell com for the most recent driver and firmware requirements Supported RAI D Controllers Storage Management supports the following RAID controllers See RAID Controller Technology SCSI SATA ATA and SAS for information on which technology the supported RAID controllers use 1 PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di 4 1M 4e Si 4e Di and CERC ATA100 4ch PERC 3 Si 3 Di CERC SATA1 5 6ch and CERC SATA1 5 2s PERC 5 E 1 PERC 5 i Integrated and PERC 5 i Adapter SAS 5 iR Integrated and SAS 5 iR Adapter 1
237. r considerations for deleting a virtual disk from a cluster enabled controller Review the Creating and Deleting Virtual Disks on Cluster enabled Controllers before attempting to delete the virtual disk It is recommended that you reboot the system after deleting the virtual disk Rebooting the system ensures that the operating system recognizes the disk configuration correctly If you delete a virtual disk and immediately create a new virtual disk with all the same characteristics as the one that was deleted the controller will recognize the data as if the first virtual disk were never deleted In this situation if you don t want the old data after recreating a new virtual disk reinitialize the virtual disk To locate this task in Storage Management 1 Expand the Storage tree object to display the controller objects 2 Expand a controller object 3 Select the Virtual Disks object 4 Select Delete from the Available Tasks drop down menu 5 Click Execute Virtual Disk Task Rename Does my controller support this feature See Supported Features Renaming a virtual disk enables you to change the virtual disk s name The numbering format for the virtual disk remains unchanged Depending on the controller you have there are different considerations regarding the controller BIOS 1 On PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di 4 1M 4e Si 4e Di and CERC ATA100 4ch controllers changing the virtual disk name wit
238. r is security capable and a Security Key is not present then the Create Security Key page is displayed Else the Change or Delete Security page is displayed Create Security Key To create a security key on the selected controller do the following 1 Enter a Security Key Identifier A Security Key Identifier can contain numerals lowercase alphabets uppercase alphabets non alphanumeric characters or a combination of any of these 2 Enter a Passphrase A Passphrase must contain at least one numeral one lowercase alphabet one uppercase alphabet and one non alphanumeric character except space 3 Read the Passphrase guidelines and acknowledge the note by selecting the accompanying check box Ensure that you save the Passphrase A CAUTI ON It is important to understand that if you lose the Passphrase you cannot recover it If you move the physical disks associated with the lost Passphrase to another controller you will not be able to access data from that disk 4 Click Apply Changes The controller information is displayed The Security Capable property value displays Yes indicating that the Create Security Key task is successful Change or Delete Security Key You can change a Security Key of a controller if the controller already has a configured Security Key You can delete a Security Key for secured controllers only if there are no secured virtual disks To change the Security Key enter the new Security Key Identifi
239. r may not detect the change until a manual rescan is done or other I O operations are attempted Likewise displaying a status change of a virtual disk or one of its member physical disks may require that you do an I O operation on the controller on which the virtual disk resides If however the controller has lost the communication path then rebooting the system is required to update the disk status Communication loss is evident if the operating system generates I O errors when you attempt to access data even though Storage Management displays the disk status as healthy Once the communication path is restored reboot the system to update the disk status If the communication path is not restored then Storage Management does not display the storage objects after the reboot Related I nformation 1 Rescan to Update Storage Configuration Changes Back to Contents Page Back to Contents Page Storage Information and Global Tasks Dell OpenManage Server Administrator Storage Management User s Guide Storage Properties Global Tasks Storage Controllers Use this window to view high level information about your system s storage This window also enables you to launch global tasks that affect all controllers attached to the system Storage Properties The Storage tree view object has the following properties Property Definition Status These icons represent the severity or health of the storage component See
240. r of times that it can be recharged When the battery approaches this limit it should be replaced NOTE Some controllers do not have batteries Other controllers have lithium ion batteries which are automatically reconditioned and therefore do not have a Recondition task in Storage Management Related I nformation Battery Properties and Tasks 1 Recondition Battery 1 Start Learn Cycle 1 Battery Delay Learn Cycle Battery Properties and Tasks Use this window to view information about the battery and execute battery tasks Battery Properties The battery tree view object has the following properties Property Definition Status These icons represent the severity or health of the storage component Normal OK Warning Non critical Critical Fatal See Storage Component Severity for more information Name This property displays the name of the battery State This property displays the current status of the battery Possible values are Ready The battery is functioning normally Degraded The battery needs to be reconditioned Reconditioning The battery is being reconditioned See Recondition Battery for more information Charging The battery is undergoing the recharge phase of the battery Learn cycle See Start Learn Cycle for more information Learning The battery is undergoing the discharge phase of the battery Learn cycle See Start Learn Cycle for mor
241. ration Operations option is displayed only when a controller detects a foreign configuration Select this option and click Execute to display the Foreign Configuration Preview page The Foreign Configuration Operations task displays foreign configuration preview of the foreign disks and enables you to perform operations such as importing recovering or clearing the foreign disks This task also enables you to import or clear a locked foreign configuration If any locked foreign configurations are detected the associated Security Key Identifier is displayed prompting you to enter the corresponding Passphrase to unlock The locked foreign configurations are available for you to preview import clear only after authentication with associated Passphrase If you do not want to import clear the foreign configurations or in case of loss of the associated Passphrase of the corresponding Security Key Identifier execute the Instant Secure Erase task for the physical disks A CAUTI ON Executing the I nstant Secure Erase task will erase all data on the physical disk Some conditions such as an unsupported RAID level or an incomplete disk group can prevent the import or recovery of foreign virtual disks Foreign Configuration Properties The following table describes the properties that are displayed for the Foreign Disks and Global Hot Spares Property Definition Status These icons represent the severity or health of the storage component No
242. rator Storage Management User s Guide What s New in this Release Installation Considerations for Storage Management Supported Controllers Supported Enclosures Support for Disk and Volume Management Support for Security Key Management Dell OpenManage Server Administrator Storage Management provides enhanced features for configuring a system s locally attached RAID and non RAID disk storage Storage Management enables you to perform controller and enclosure functions for all supported RAID and non RAID controllers and enclosures from a single graphical or command line interface without requiring use of the controller BIOS utilities The graphical interface is wizard driven with features for novice and advanced users The command line interface is fully featured and scriptable Using Storage Management you can protect your data by configuring data redundancy assigning hot spares or rebuilding failed physical disks You can also perform data destructive tasks All users of Storage Management should be familiar with their storage environment and storage management Storage Management supports SCSI SATA ATA and SAS but not fibre channel For more information see the following 1 Getting Started Understanding RAID Concepts 1 Quick Access to Storage Status and Tasks For information on Storage Management alerts see the Dell OpenManage Server Administrator Messages Reference Guide on the Dell Support web
243. re See Supported Features The write policies specify whether the controller sends a write request completion signal as soon as the data is in the cache or after it has been written to disk Write Back When using write back caching the controller sends a write request completion signal as soon as the data is in the controller cache but has not yet been written to disk Write back caching may provide improved performance since subsequent read requests can more quickly retrieve data from the controller cache than they could from the disk Write back caching also entails a data security risk however since a system failure could prevent the data from being written to disk even though the controller has sent a write request completion signal In this case data may be lost Other applications may also experience problems when taking actions that assume the data is available on the disk NOTE Storage Management does not allow you to select the Write Back policy for controllers that do not have a battery The only exception are PERC S100 and S300 This restriction protects a controller without a battery from the loss of data that may occur in the event of a power failure On some controllers the Write Back policy may be available in the controller BIOS even though it is not available in Storage Management Force Write Back When using force write back caching the write cache is enabled regardless of whether the controller has a battery If the controlle
244. re Temperature Probe is Failed Storage Subsystem DER Enclosure Temperature Probe Virtual Disks Physical Disks Component Status Health Rollup Health Status Rollup Lost Both Power Connections to the Enclosure Table B 13 Health Status Rollup Lost Both Power Connections to the Enclosure Storage Subsystem Controller Connector Enclosure All Enclosure Components Virtual Disks Physical Disks Component Status Health Rollup Health Status Rollup One or More Physical Disks are Failed Table B 14 Health Status Rollup One or More Physical Disks are Failed Component Status Health Rollup Health Status Rollup Physical Disk is Rebuilding Table B 15 Health Status Rollup Physical Disk is Rebuilding Storage Subsystem Controller Connector Enclosure Enclosure Component Virtual Disks Physical Disks Component Status Health Rollup Back to Contents Page Back to Contents Page Physical Disks Dell OpenManage Server Administrator Storage Management User s Guide Add a New Disk to Your System Initialize How to Avoid Removing the Wrong Disk Rebuild Replacing a Physical Disk Receiving SMART Alerts Cancel Rebuild Other Disk Procedures Assign and Unassign Global Hot Spare Physical Disk Properties and Tasks Online and Offline
245. re a single machine Clusters provide increased availability because when one server in the cluster experiences downtime another server can take over the processing and workload requests of the failed server K NOTE Storage Management does not set resource ownership in a Microsoft Windows cluster configuration Updating the Display of Clustered Resources This section applies to 3 DC 4 DC and 4e DC controllers After a failover of cluster resources it is necessary to perform a rescan operation in order for Storage Management to display the most up to date information about shared resources Downloading Firmware and Cluster Controllers This section applies to 3 DC 4 DC and 4e DC controllers When downloading firmware to a clustered controller it is recommended that you shut down the other systems in the cluster first When restarted the other systems in the cluster should be able to see the firmware updates that you have applied If however you have downloaded firmware to a controller without first shutting down the other systems in the cluster you may find that the other systems cannot see the firmware update until you restart the disk management service on those systems For example if you download firmware onto system A and system B cannot see the firmware update then restart the disk management service on system B Creating and Deleting Virtual Disks on Cluster enabled Controllers This section applies to 3 DC 4
246. recovered See Considerations for PERC 3 Si 3 Di CERC SATA1 5 6ch and CERC SATA1 5 2s Controllers When Physical Disks are Shared by Redundant and Nonredundant Virtual Disks for related information On the PERC 5 E controller the Offline state indicates that the disk is included in a virtual disk but it is not receiving I O This may occur when a user has set the disk to Offline See Online and Offline for more information Rebuilding Data from a redundant virtual disk is currently being rebuilt onto the physical disk Incompatible The physical disk is not suitable for a rebuild The physical disk may be too small or it may be using an incompatible technology For example you cannot rebuild a SAS disk with a SATA disk or a SATA disk with a SAS disk Removed The physical disk has been removed This state only applies to physical disks that are part of a virtual disk Clear The Clear task is being performed on the physical disk A physical disk may also display the Clear state if the physical disk is a member of a virtual disk that is being slow initialized For more information see Clear Physical Disk and Cancel Clear and Format and Initialize Slow and Fast Initialize SMART Alert Detected A SMART alert predictive failure has been detected on the physical disk The physical disk may fail and should be replaced This state applies to physical disks attached to non RAID controllers Unknown The phys
247. red and foreign SED drive even when Security Key is not present in the controller A CAUTI ON Instant Secure Erase permanently erases all data present on the disk To locate this task in Storage Management 1 Expand the Storage tree object to display the controller objects 2 Expand a controller object 3 Expand a Connector object 4 Expand the enclosure or Backplane object 5 Select the Physical Disks object 6 Select Instant Secure Erase from the Available Tasks drop down menu of the physical disk you want to clear 7 Click Execute Back to Contents Page Back to Contents Page RAID Controller Batteries Dell OpenManage Server Administrator Storage Management User s Guide Battery Properties and Tasks Some RAID controllers have batteries If the controller has a battery Storage Management displays the battery under the controller object in the tree view In the event of a power outage the controller battery preserves data that is in the nonvolatile cache memory NVRAM but not yet written to disk The battery is designed to provide a minimum of 72 hours protection for DIMMs up to 64 MB and 48 hours protection for 128 MB DIMMs The actual period of protection or holdover time depends on the battery s charge level When a RAID controller is first installed in a server the battery is fully discharged When the server is powered the battery begins a full charge cycle On most controllers it takes three h
248. rity for more information Name Current State After Import State Capacity Failure Predicted Progress Bus Protocol Media Used RAID Disk Space Available RAID Disk Space Hot Spare Vendor ID Product ID Revision Serial No Negotiated Speed This property displays the name of the physical disk The name is comprised of the connector number followed by the disk number This property displays the current state of the physical disk This property displays the after import state of the physical disk The physical disk can be imported in any of the following states Online The physical disk will be part of the imported virtual disk and will function normally Offline The physical disk will be offline after import to the virtual disk Foreign The virtual disk containing the physical disk cannot be imported and the physical disk will remain in foreign state Rebuild After import of virtual disk the physical disk will rebuild Replacing A Replace Member Disk task will be performed on the physical disk For more information see Replace Member Disk and Revertible Hot Spare This property displays the full capacity of the disk This property displays whether or not the physical disk has received a Self Monitoring Analysis and Reporting Technology SMART alert and is therefore predicted to fail For more information on SMART predictive failure analysis se
249. rmal OK R Warning Non critical Critical Fatal See Storage Component Severity for more information Name This property displays the name of the foreign configuration and is available as a link The link enables you to access the physical disks that constitute the foreign disk State This property displays the current state of the foreign configuration Ready The foreign disk can be imported and will function normally after import Degraded The foreign disk is in degraded state and will rebuild after import Failed The foreign disk has encountered a failure and is no longer functioning You cannot import the foreign configuration The foreign configuration may be in degraded or failed state due to any of the following reasons Missing physical disk One of the physical disks in the potential virtual disk is missing or not available Missing Span One or more span of a hybrid virtual disk is missing Stale physical disks One or more physical disk in the configuration may contain out of date data with respect to other disks of that virtual disk Hence the data integrity of the imported virtual disk is not intact Unsupported configuration of the virtual disk The virtual disk has an unsupported RAID level The virtual disks available for import exceed the number of virtual disk available for export Incompatible physical disks Configuration on the physical disks is not recognized by t
250. rmance gain No redundancy Related I nformation See the following Organizing Data Storage for Availability and Performance Controller supported RAID Levels 1 Number of Physical Disks per Virtual Disk 1 Maximum Number of Virtual Disks per Controller RAID Level 0 Striping RAID 0 uses data striping which is writing data in equal sized segments across the physical disks RAID 0 does not provide data redundancy Figure 3 2 Striping Disks RAID O Characteristics Groups n disks as one large virtual disk with a capacity of smallest disk size n disks Data is stored to the disks alternately No redundancy data is kept When a disk fails the large virtual disk fails with no means of rebuilding the data Better read and write performance Related I nformation See the following 1 Organizing Data Storage for Availability and Performance 1 Comparing RAID Level and Concatenation Performance 1 Controller supported RAID Levels 1 Number of Physical Disks per Virtual Disk 1 Maximum Number of Virtual Disks per Controller RAID Level 1 Mirroring RAID 1 is the simplest form of maintaining redundant data In RAID 1 data is mirrored or duplicated on one or more physical disks If a physical disk on one side of the mirror fails then the data can be rebuilt using the physical disk on the other side of the mirror Figure 3 3 Mirroring Disks RAID
251. roller Battery Connector Physical Disk s Firmware Driver Virtual Disk s Component Status Health Rollup Health Status Rollup Virtual Disk is Failed Table B 7 Health Status Rollup Virtual Disk is Failed Enclosures Not Included Component Status Health Rollup Health Status Rollup Unsupported Firmware Version Table B 8 Health Status Rollup Unsupported Firmware Version Enclosures Not I ncluded Storage Subsystem Controller Battery Connector Physical Disk s Firmware Driver Virtual Disk s Component Status Health Rollup Health Status Rollup Enclosure Power Supply Failed or Power Connection Removed Table B 9 Health Status Rollup Enclosure Power Supply Failed or Power Connection Removed Component Status Health Rollup Health Status Rollup One Enclosure Fan is Failed Table B 10 Health Status Rollup One Enclosure Fan is Failed Storage Subsystem Component Status Health Rollup Health Status Rollup One Enclosure EMM is Failed Table B 11 Health Status Rollup One Enclosure EMM is Failed Storage Subsystem Controller Connector Enclosure Enclosure EMM Virtual Disks Physical Disks Component Status Health Status Rollup One Enclosure Temperature Probe is Failed Table B 12 Health Status Rollup One Enclosu
252. rollers The following describes how to migrate virtual disks and volumes from one system to another Completing the migration requires the following activities 1 Moving the Disks 1 Saving the New Controller Configuration Moving the Disks Shut down the system that the physical disks are being moved from If the receiving controller has a preexisting virtual disk configuration on attached physical disks use the following procedure for clearing the configuration o Shut down the receiving server o Remove all the physical disks from the controller o Start up the receiving server and clear the configuration from the controller BIOS After making the changes power down the server when it indicates to reboot the system If the receiving controller does not have a preexisting virtual disk configuration then shut down its server Place the physical disks into the new enclosure Start up the system connected to the receiving controller When the system connected to the new enclosure comes up use the BIOS access Ctrl M to update the controller configuration with the information saved on the physical disks Exiting the BIOS access will require one more reboot of the system The migration is complete The virtual disk is now manageable through Storage Management Continue with Saving the New Controller Configuration Saving the New Controller Configuration Use the following procedure to enter the controller BIOS configuration s
253. rollers When Physical Disks are Shared by Redundant and Nonredundant Virtual Disks This section describes behavior that may occur on the PERC 3 Si 3 Di CERC SATA1 5 6ch and CERC SATA1 5 2s controllers if you use the same physical disks for both redundant and nonredundant virtual disks In this type of configuration the failure or removal of a physical disk can cause the following behavior The nonredundant virtual disk displays a Failed state Resolution This behavior is expected because the virtual disk is nonredundant In this case the failure or removal of a single physical disk causes the entire virtual disk to fail with no possibility of recovering the data unless a backup is available The redundant virtual disks display a Degraded state Resolution This behavior is also expected Data can be recovered if a hot spare is available to rebuild the failed or removed disk Various disks display an Offline state The Offline state may apply to all physical disks used by the redundant and nonredundant virtual disks Resolution Perform a Rescan Controller When the rescan is complete select each physical disk that is Offline and perform a Remove Dead Segments task You must remove the dead segments before the physical disk can be brought back online The dead segments are caused by the failure or removal of the shared physical disk K NOTE It is recommended that you avoid using the same physical disks for both redundant and nonred
254. rs that are security capable PERC H700 and PERC H800 family of controllers have a Security Key have Self Encryption Drives SEDs virtual disks Create Virtual Disk Express Wizard Step 1 of 2 Does my controller support this feature See Supported Features The Create Virtual Disk Express Wizard calculates an appropriate virtual disk configuration based on the available space and controller considerations When using the Express Wizard you select the RAID level and size for the virtual disk The wizard selects a recommended disk configuration for you that matches your RAID and size selection Before creating a virtual disk you should be familiar with the information in Considerations Before Creating Virtual Disks You may also want to review Choosing RAID Levels and Concatenation If you want to make your own selections for the virtual disk configuration click Go To Advanced Wizard To Create a Virtual Disk Express Wizard Step 1 of 2 1 Click the radio button to select the correct RAID level o Depending on the controller Concatenated enables you to combine the storage capacity of several disks or to create a virtual disk using only a single physical disk See Number of Physical Disks per Virtual Disk for information on whether the controller supports a single physical disk or two or more when using Concatenated Using Concatenated does not provide data redundancy nor does it affect the read and write
255. rties drop down menu For more information see Change Controller Properties Set Check Consistency Rate Does my controller support this feature See Supported Features The Set Check Consistency Rate task changes the amount of system resources dedicated to the check consistency task See Check Consistency for more information about the check consistency task The check consistency rate configurable between 0 and 100 represents the percentage of the system resources dedicated to running the check consistency task At 0 the check consistency will have the lowest priority for the controller will take the most time to complete and will be the setting with the least impact to system performance A check consistency rate of 0 does not mean that the check consistency is stopped or paused At 100 the check consistency will be the highest priority for the controller will minimize the check consistency time and will be the setting with the most impact to system performance To change the controller s check consistency rate 1 Type a numerical value in the New Check Consistency Rate text box The value must be within the 0 100 range 2 Click Apply Changes If you want to exit and cancel your changes click Go Back to Previous Page To locate this task in Storage Management 1 Expand the Storage tree object to display the controller objects 2 Select a controller object 3 Select the Information Configuration subtab
256. rver to another You can perform physical and virtual disk migration on PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di CERC ATA100 4ch PERC 5 E and PERC 5 i and SAS 5 iR controllers as long as the following conditions are met General Conditions for SCSI and SAS Controllers Virtual disks can only be migrated to a controller that is using the same technology For example virtual disks on a SCSI controller must be migrated to a SCSI controller and virtual disks on a SAS controller must be migrated to a SAS controller See RAID Controller Technology SCSI SATA ATA and SAS for more information 1 When moving an enclosure both SCSI and SAS controllers require that you power down the enclosure and the server before moving the enclosure SCSI Controller Conditions 1 PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di 4e Si and 4e Di virtual disks cannot be migrated to a PERC 2 SC or PERC 2 DC controller PERC 2 SC and PERC 2 DC virtual disks can be migrated to a PERC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di 4e Si or 4e Di controller GZ NOTE The current version of Storage Management does not support the PERC 2 2 Si 2 SC or 2 DC controllers A virtual disk cannot be migrated between the PERC 3 Si PERC 3 Di CERC SATA1 5 6ch and CERC SATA1 5 2s controller family and the PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di 4e Si 4e Di and CERC ATA100 4ch controller family On SCSI controllers a virtual disk cannot be migrated from one control
257. s Connector Properties The connector properties can vary depending on the model of the controller Connector properties may include Property Definition These icons represent the severity or health of the storage component See Storage Component Severity for more information A Warning A or Critical severity may indicate that the connector is unable to communicate with attached devices such as an enclosure Check the status of attached devices See Cables Attached Correctly and Isolate Hardware Problems for more information Name This property displays the connector number State This property displays the current status of the connector Possible values are Ready The connector is functioning normally Degraded The connector has encountered a failure and is operating in a degraded state Failed The connector has encountered a failure and is no longer functioning Connector This property displays whether the connector is operating in RAID or SCSI mode Depending on the controller type the connector can be Type either a SCSI connector or a SAS port Termination This property indicates the termination type of the connector Narrow Indicates an 8 bit data bus Wide Indicates a 16 bit data bus Unknown Indicates that the termination type is unknown Not Terminated On a SCSI controller this property indicates that the data bus is not terminated This property is also displayed when the
258. s RAI RAI RAI RAI A Al CERC SATA1 5 2s PERC 6 E PERC 6 1 CERC 6 1 PERC H800 Adapter PERC H700 Adapter PERC H700 Integrated and PERC H700 Modular Add a single disk D5 RAID 6 east one additional disk requires a minimum of 4 d D1 D6 DO With or without adding additiona D6 DO D1 D5 5 5 D5 RAID 6 t one additional disk eee requires a minimum of 4 d With or without adding additional disks Add at least one additional disk RA R SAS 6 iR PERC S100 S300 RAI RAI N A RAID 0 RAID 0 RAID 0 RAID 1 RAID 1 RAI RAI RAID 6 RAID 6 N A RAI RAID 5 RAIDS o O O With or without additional disks RAID 10 Without additional disks Exceptions for Reconfiguring a Concatenated Virtual Disk on PERC 3 Si 3 Di CERC SATA1 5 6ch and CERC SATA1 5 2s Controllers You can create a concatenated virtual disk by performing a Split Mirror or an Unmirror on a RAID 1 concatenated virtual disk After you have done so however the resulting concatenated virtual disks cannot be subjected to any further modification You cannot reconfigure or add disks to the resulting concatenated virtual disks Maintain Integrity of Redundant Virtual Disks Does my controller support this feature See Supported Features The virtual disk Check Consistency task verifies the accuracy of the redundant parity information This task only applies to redundant v
259. s the month and date For example a log file exported on September 21 will be named either afa_0921 log or Isi_0921 log K NOTE In the VMware ESXi environment only one log file is created Isiexport log If the file already exists exporting the log file overwrites the existing log file K NOTE The Export Log File command is not supported on the PERC 4 IM CERC ATA100 4ch CERC SATA1 5 2s In addition some of the non RAID SCSI controllers do not support the Export Log File command To export the controller log file Click Export Log File when ready To exit without exporting the controller log file click Go Back to Previous Page To locate this task in Storage Management 1 Expand the Storage tree object to display the controller objects 2 Select a controller object 3 Select the Information Configuration subtab 4 Select Export Log from the Available Tasks drop down menu 5 Click Execute You can also locate this task from the Change Controller Properties drop down menu For more information see Change Controller Properties Foreign Configuration Operations K NOTE Foreign Configuration Operations is available only on SAS controllers with firmware versions 6 1 and later A foreign configuration is data residing on physical disks that have been moved from one controller to another Virtual disks residing on physical disks that have been moved are considered to be a foreign configuration The Foreign Configu
260. se the Quiet Alarm task to quiet the controller s alarm when it is sounding After it is quieted the alarm is still enabled in the event of a future device failure Test Alarm Controller Does my controller support this feature See Supported Features Use the Test Alarm task to test whether the controller alarm is functional The alarm will sound for about two seconds K NOTE The Test Alarm task is only available on the CERC SATA1 5 6ch controller Set Rebuild Rate Does my controller support this feature See Supported Features Use the Set Rebuild Rate task to change the rebuild rate See Set Rebuild Rate for more information Export Log File Does my controller support this feature See Supported Features Use this task to export the controller log to a text file See Export Log for more information Controller Components For information on attached components see the following topics 1 Battery Properties and Tasks 1 Connector Properties and Tasks 1 Enclosure and Backplane Properties and Tasks Firmware Driver Properties Virtual Disk Properties and Tasks Foreign Configuration Operations Does my controller support this feature See Supported Features The Foreign Configuration Operations task provides a preview of the foreign configurations that you can import This task is available on PERC 6 controllers with firmware version 6 1 and later See Foreign C
261. sical Disk Online Command on Select Controllers for more information NOTE The Online and Offline tasks are not supported on the PERC 4 IM controller or the PERC 3 Si 3 Di CERC SATA1 5 6ch and CERC SATA1 5 2s controllers To online or offline the physical disk 1 Review the physical disk that will be made online or offline When making a physical disk offline be aware that there can be data loss Back up your data if necessary If you want to blink the physical disk click the Blink button 2 Click Online or Offline when ready or click Go Back to Previous Page To locate this task in Storage Management 1 Expand the Storage tree object to display the controller objects 2 Expand a controller object 3 Expand a Connector object 4 Expand the enclosure or Backplane object 5 Select the Physical Disks object 6 Select Online or Offline from the Available Tasks drop down menu of the physical disk you want to make online or offline 7 Click Execute Clear Physical Disk and Cancel Clear Does my controller support this feature See Supported Features Use the clear physical disk task to erase data residing on a physical disk The Clear task applies to physical disks that are in Ready state and that contain data or that are in Clear state K NOTE A physical disk may display the Clear state if it is a member of a virtual disk that is being slow initialized Performing a Cancel Clear task on the physical disk
262. sical Disks in a RAID 5 Minimum Number of Physical Disks in a RAID 10 Minimum Number of Physical Disks in a RAID 50 Maximum number of physical disks in a RAID 6 Maximum number of physical disks in a RAID 60 Minimum number of physical disks in a RAID 6 Minimum number of physical disks in a RAID 60 Supported RAID Levels Table A 16 RAID Levels Supported by the PERC 3 Si 3 Di CERC SATA1 5 2s and CERC SATA1 5 6ch Controllers RAID Level PERC 3 SI PERC 3 DI CERC SATA 2S CERC SATA 6ch Concatenation RAID 0 RAID 1 RAID 5 RAID 10 RAID 50 RAID 6 RAID 60 Read Write and Disk Cache Policy Table A 17 Read Write and Cache Policy Supported by the PERC 3 Si 3 Di CERC SATA1 5 2s and CERC SATA1 5 6ch Controllers Read Write and Cache Policy PERC a SI PERC 3 DI CERC SATA 2S CERC SATA 6ch Cache settings Read Policy Read Ahead Enabled Adaptive Read Ahead No Read Ahead Disabled Write Policy Write Back Enabled Write Through Disabled Force Write Back Enabled Always Write Cache Enabled Protected Cache Policy Cache 1 0 Direct 1 0 Enclosure Support Table A 18 Enclosure Support on the PERC 3 Si 3 Di CERC SATA1 5 2s and CERC SATA1 5 6ch Controllers Enclosure Support PERC 3 SI PERC 3 DI CERC SATA 2S CERC SATA 6ch Supported Features on the PERC 5 E PERC 5
263. siderations for Hot Spares on PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di 4e Si 4e Di CERC ATA100 4ch PERC 5 E PERC 5 i PERC 6 E PERC 6 1 and CERC 6 1 Controllers Considerations for Hot Spares on PERC 3 Si 3 Di CERC SATA1 5 6ch 100 and 300 Controllers Global Hot Spare Considerations on a SAS 6 iR When you create a redundant virtual disk using a RAID controller you have the opportunity to maintain system operations even when a disk fails To do so you would assign a hot spare to the virtual disk When a disk fails the redundant data is rebuilt onto the hot spare without interrupting system operations Understanding Hot Spares A hot spare is an unused backup physical disk that can be used to rebuild data from a redundant virtual disk Hot spares remain in standby mode When a physical disk that is used in a redundant virtual disk fails the assigned hot spare is activated to replace the failed physical disk without interrupting the system or requiring your intervention If a virtual disk using the failed physical disk is not redundant then the data is permanently lost without any method unless you have a backup to restore the data Hot spare implementation is different for different controllers See the following sections for more information 1 Considerations for Hot Spares on PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di 4e Si 4e Di CERC ATA100 4ch PERC 5 E PERC 5 i PERC 6 E PERC 6 1 and CERC 6 1 Con
264. sions of the Linux operating system the virtual disk size is limited to 1TB If you create a virtual disk that exceeds the 1TB limitation your system may experience the following behavior 1 1 0 errors to the virtual disk or logical drive Inaccessible virtual disk or logical drive Virtual disk or logical drive size is smaller than expected If you have created a virtual disk that exceeds the 1TB limitation you should do the following 1 Back up your data 2 Delete the virtual disk 3 Create one or more virtual disks that are smaller than 1TB 4 Restore your data from backup Whether or not your Linux operating system limits virtual disk size to 1TB depends on the version of the operating system and any updates or modifications that you have implemented See your operating system documentation for more information Problems Associated With Using the Same Physical Disks for Both Redundant and Nonredundant Virtual Disks When creating virtual disks you should avoid using the same physical disks for both redundant and nonredundant virtual disks This recommendation applies to all controllers Using the same physical disks for both redundant and nonredundant virtual disks can result in unexpected behavior including data loss K NOTE SAS controllers do not allow you to create redundant and nonredundant virtual disks on the same set of physical disks Considerations for PERC 3 Si 3 Di CERC SATA1 5 6ch and CERC SATA1 5 2s Cont
265. site at support dell com manuals What s New in this Release This release of Storage Management provides the following new features Added support for Dell PowerVault MD1200 and MD1220 enclosures These enclosures support 6 Gbps drives and backplane Added support for PERC H200 Adapter PERC H200 Integrated and PERC H200 Modular controllers 1 Added support for series 7 controllers PERC H800 Adapter PERC H700 Adapter PERC H700 Integrated and PERC H700 Modular Added support for virtual disk bad block management for PERC H700 and PERC H800 controllers Added support for RAID 10 on PERC H200 controllers Added a feature that notifies you of the non Dell certified drives Added support for 6 Gbps physical drives Added support for collection and verification of minimum storport driver version Added support for Security Key Management on a security capable controller This version of Storage Management User s Guide no longer carries information on Alert Messages and Command Line Interface For information on Alert Messages see the Dell OpenManage Server Administrator Messages Reference Guide and for information on Command Line Interface see Dell OpenManage Server Administrator Command Line Interface User s Guide on the Dell Support website at support dell com manuals Installation Considerations for Storage Management The following sections describe considerations for installing Storage Management PERC Conso
266. sks can be included in a RAID 5 SAS RAID Controllers When using a SAS controller the controller calculates the maximum virtual disk size based on the available disk space provided by the minimum number of physical disks required to create the RAID level you selected For example if you specified a RAID 5 then the controller calculates the maximum virtual disk size based on three physical disks because only three physical disks are required to create a RAID 5 Channel Redundant Virtual Disks When creating a virtual disk it is possible to use disks attached to different channels to implement channel redundancy This configuration might be used for disks that reside in enclosures subject to thermal shutdown See the following for more information 1 SMART Thermal Shutdown 1 Channel Redundancy and Thermal Shutdown K NOTE Channel redundancy only applies to controllers that have more than one channel and that attach to an external disk enclosure Creating Virtual Disks Does my controller support this feature See Supported Features In order to implement RAID functions you need to create a virtual disk A virtual disk refers to storage created by a RAID controller from one or more physical disks Although a virtual disk may be created from several physical disks it is seen by the operating system as a single disk See What Is RAID for more information Before creating a virtual disk you should be familiar with t
267. sks residing on this physical disk will be removed Rebuild Does my controller support this feature See Supported Features Use the Rebuild task to reconstruct data when a physical disk in a redundant virtual disk fails See Replacing a Failed Disk that is Part of a Redundant Virtual Disk for more information Rebuilding a disk may take several hours Cancel Rebuild Does my controller support this feature See Supported Features Use the Cancel Rebuild task to cancel a rebuild that is in progress If you cancel a rebuild the virtual disk remains in a degraded state The failure of an additional physical disk can cause the virtual disk to fail and may result in data loss It is highly recommended that you rebuild the failed physical disk as soon as possible 7 NOTE If you cancel the rebuild of a physical disk that is assigned as a hot spare you will need to reinitiate the rebuild on the same physical disk in order to restore the data Canceling the rebuild of a physical disk and then assigning another physical disk as a hot spare will not cause the newly assigned hot spare to rebuild the data You will need to reinitiate the rebuild on the physical disk that was the original hot spare Assign and Unassign Global Hot Spare Does my controller support this feature See Supported Features A global hot spare is an unused backup disk that is part of the disk group Hot spares remain in standby mode When a ph
268. t For enclosure supported tasks see Enclosure and Backplane Features Controller Tasks Table A 28 Controller Tasks Supported on the PERC H800 PERC H700 Adapter PERC H700 Integrated and PERC H700 Modular Controllers Controller Task Name PERC H800 PERC H700 Adapter PERC H700 Integrated PERC H700 Modular Reset configuration Yes Yes Yes Set Rebuild Rate Yes Yes Yes Yes Set Background Initialization Rate Yes Yes Yes Yes Set Check Consistency Rate Yes Yes Yes Yes Set Reconstruct Rate Yes Yes Yes Yes Create Virtual Disk Yes Yes Yes Yes Export Log File Yes Yes Yes Yes Clear Foreign Configuration Yes Yes Yes Yes Import Foreign Configuration Yes Yes Yes Yes Import Recover Foreign Configuration Yes Yes Yes Yes Set Patrol Read Mode Yes Yes Yes Yes Start Patrol Read Yes Yes Yes Yes Stop Patrol Read Yes Yes Yes Yes Replace Member Yes Yes Yes Yes Foreign Configuration Yes Yes Yes Import Preview of Foreign Configuration Yes Yes Yes Change Controller Properties Yes Yes Yes Yes Intelligent Mirroring Yes Yes Yes Yes Redundant Path Configuration Yes No No No Disk Cache Policy Yes Managing Preserved Cache Yes Manage Security Key Yes Battery Tasks Table A 29 Battery Tasks Supported on the PERC H800 PERC H700 Adapter PERC H700 Integrated and PERC H700 Modular Controllers Battery Task Name PERC H800 PERC H700 Adapter PERC H700 Integrated PERC H70
269. t Temperature Probe Back to Contents Page Back to Contents Page Frequently Asked Questions Dell OpenManage Server Administrator Storage Management User s Guide Why is a rebuild not working How can safely remove or replace a physical disk How do recover from removing the wrong physical disk How do know what firmware is installed What controllers do have How do turn off an alarm What RAID level is best for me This section provides frequently asked questions that address situations commonly experienced in a storage environment Why is a rebuild not working See A Rebuild Does Not Work for more information How can I safely remove or replace a physical disk The following sections provide information related to safely removing a healthy physical disk For disks that reside in an enclosure use the Prepare to Remove task to locate the disk within the enclosure and deactivate it prior to removal For physical disks included in a virtual disk use the Offline task to deactivate the disk prior to removal See Online and Offline for more information If you need help locating the disk within the enclosure you can blink the disk s light emitting diode LED displays See Blink and Unblink Physical Disk for more information The following sections describe how to replace a disk that has failed or is receiving SMART alerts 1 Replacing a Failed Disk
270. t are attached to different controller channels The physical disks may reside in an external enclosure or the backplane internal enclosure If the virtual disk is maintaining redundant data on different channels then the virtual disk is channel redundant Channel redundancy means that if one of the channels fails data will not be lost because redundant data resides on another channel Channel redundancy might also be used for disks that reside in enclosures subject to thermal shutdown Should the enclosure attached to one of the channels shut down redundant data is maintained on the other channel Channel redundancy is implemented by selecting physical disks on different channels when using the Create Virtual Disk Advanced Wizard K NOTE Channel redundancy only applies to controllers that have more than one channel and that attach to an external disk enclosure Related I nformation 1 SMART Thermal Shutdown 1 Channel Redundancy on PERC 3 DC 3 QC 4 DC 4e DC 4 Di and 4e Di Controllers Creating a Channel redundant Virtual Disk Channel Redundancy on PERC 3 DC 3 QC 4 DC 4e DC 4 Di and 4e Di Controllers The following considerations apply when creating a channel redundant virtual disk on these controllers Itis recommended that you use a RAID 10 or RAID 50 when implementing channel redundancy on the PERC 3 DC 3 QC 4 DC 4e DC 4 Di and 4e Di controllers If one of the channels or enclosure f
271. t is in Resynching state will cause the virtual disk to be in a Failed Redundancy state See Considerations for Concatenated to RAID 1 Reconfiguration on PERC 3 Si 3 Di and CERC SATA1 5 6ch Controllers for more information Resynching Paused A consistency check has been paused on the virtual disk Regenerating A physical disk in the virtual disk is rebuilding Reconstructing The virtual disk configuration has changed The physical disks included in the virtual disk are being modified to support the new configuration Failed The virtual disk has encountered a failure of one or more components and is no longer functioning Failed Redundancy This state is displayed when the initial consistency check for the virtual disk is cancelled or is not successful This state may also be displayed when a RAID 1 RAID 10 or RAID 1 concatenated virtual disk suffers a physical disk failure In addition there are other conditions related to disk failures and the firmware that can cause a virtual disk to display a Failed Redundancy state When a virtual disk is in Failed Redundancy state performing a Check Consistency may return the virtual disk to a Ready state This state only applies to virtual disks on a PERC 3 Si 3 Di CERC SATA1 5 6ch and CERC SATA1 5 2s controller Background Initialization A background initialization is being performed on the virtual disk Formatting The virtual disk is being formatted Formatting app
272. t the controller is using for this virtual disk See RAID Controller Read Write Cache and Disk Cache Policy Stripe Size This property displays the stripe size of the virtual disk Disk Cache This property displays whether the disk cache policy of the physical disks that are part of the virtual disk is enabled or disabled See RAID Policy Controller Read Write Cache and Disk Cache Policy Virtual Disk Tasks Do the following to execute a virtual disk drop down menu task 1 Expand the Storage tree object to display the controller objects 2 Expand a controller object 3 Select the Virtual Disks object 4 Select a task from the Available Tasks drop down menu 5 Click Execute NOTE Different controllers support different features For this reason the tasks displayed on the Tasks drop down menu can vary depending on which controller is selected in the tree view If no tasks can be performed because of controller or system configuration limitations then the Tasks drop down menu displays No Task Available Virtual Disk Drop down Menu Tasks 1 Reconfigure 1 Format Initialize Slow and Fast Initialize 1 Cancel Format or Initialize 1 Cancel Background Initialization Restore Dead Segments 1 Delete 1 Assign and Unassign Dedicated Hot Spare 1 Check Consistency 1 Cancel Check Consistency 1 Pause Check Consistency Resume Check Consis
273. tdown of enclosures that have exceeded a critical temperature is the only exception See SMART Thermal Shutdown Storage Management actions are user initiated using wizards and drop down menus Storage Management does however report the actions taken by the controllers which include generating alerts initiating tasks such as a rebuild and making state changes K NOTE Storage Management reports the change in state of disks and other storage components as viewed by the controller Launching Storage Management Storage Management is installed as a Dell OpenManage Server Administrator service All Storage Management features are accessible by selecting the Storage object in the Server Administrator tree view For more information on starting Server Administrator see the Dell OpenManage Server Administrator User s Guide Microsoft Windows To start a Server Administrator session on a local Microsoft Windows system click the Dell OpenManage icon on your desktop and log in using an account with Administrator privileges K NOTE Administrative privileges are required for configuration purposes Linux and any Remote System To start a Server Administrator session on a Linux or any remote system click the Dell OpenManage icon on your desktop and log in using an account with Administrator privileges Or open a Web browser and type one of the following in the address field and press lt Enter gt https lt localhost gt 13
274. tency 1 Blink and Unblink Virtual Disk 1 Rename 1 Split Mirror 1 Unmirror 1 Cancel Rebuild 1 Change Policy 1 Replace Member Disk Clear Virtual Disk Bad Blocks 1 Secure Virtual Disk Reconfigure Does my controller support this feature See Supported Features Use the Reconfigure task to change the virtual disks properties For example you can use this task to add physical disks or change the RAID level See Virtual Disk Task Reconfigure Step 1 of 3 for more information Format Initialize Slow and Fast I nitialize Does my controller support this feature See Supported Features Use the Format Initialize Slow Initialize or Fast Initialize task to erase the files and remove the file systems on a virtual disk Some controllers require that you initialize a virtual disk before it can be used See Format and Initialize Slow and Fast Initialize for more information Cancel Format or I nitialize Does my controller support this feature See Supported Features Use the Cancel Format or Cancel Initialize task to cancel the virtual disk format or initialize while it is in progress For more information on virtual disk format or initialize see Format and Initialize Slow and Fast Initialize K NOTE The Cancel Initialize task only applies to the PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di 4e Si 4e Di and CERC ATA100 4ch controllers Cancel Background Ini
275. ter enabled RAID Controllers Set Background Initialization Rate Creating and Deleting Virtual Disks on Cluster enabled Controllers Set Check Consistency Rate Integrated Mirroring and the PERC 4 IM Controller Set Reconstruct Rate Background Initialization on PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di 4e Si and 4e Di Controllers Redundant Path Configuration Non RAID Controller Description Set Patrol Read Mode Firmware Driver Versions Start and Stop Patrol Read Controller Health Change Controller Properties Controller Properties and Tasks Manage Preserved Cache Set Rebuild Rate Manage Security Key Reset Configuration This section describes the controllers supported by Storage Management as well as the different controller features What is a Controller Most operating systems do not read and write data directly from the disks but instead send read and write instructions to a controller The controller is the hardware in your system that interacts directly with the disks to write and retrieve data A controller has connectors channels or ports which are attached to one or more physical disks or an enclosure containing physical disks RAID controllers can span the boundaries of the disks so as to create an extended amount of storage space or a virtual disk using the capacity of more than one disk Controllers also perform other tasks such as initiating rebuilds initializing disks an
276. test data Now if you re insert D2 and pull out D1 the virtual disk will still be degraded and will not have the latest data Manage Preserved Cache You can discard the preserved cache only if all of the following conditions are met The controller does not have any foreign configuration Select Click for Preview to view details of the foreign configuration See Foreign Configuration Operations The controller does not have any offline or missing virtual disks If there are offline or missing virtual disks ensure you have a backup of these virtual disks Cables to any virtual disk are not disconnected Manage Security Key Does my controller support this feature See Supported Features The Manage Security Key task enables you to create a new Security Key or change delete an existing Security Key on a security capable controller K NOTE This task is available only on PERC H800 and PERC H700 controllers To locate this task in Storage Management do one of the following 1 Select Storage in the Storage tree 2 On the Storage Dashboard page select Manage Security Key from the Available Tasks drop down menu 3 Click Execute Or 1 Expand the Storage tree object to display the controller objects 2 Select a security capable controller object 3 Select the Information Configuration subtab 4 Select Manage Security Key from the Controller Tasks drop down menu 5 Click Execute If the controlle
277. the Information Configuration tab The Information Configuration tab displays the service tag and other enclosure properties Preparing a physical disk for removal The task that enables you to prepare a physical disk for removal is a physical disk command See Prepare to Remove Troubleshooting For general information on troubleshooting procedures see Troubleshooting 1 Removing the wrong physical disk You can avoid removing the wrong physical disk by blinking the LED display of the disk you intend to remove See Blink and Unblink Physical Disk If you have already removed the wrong physical disk see Recovering from Removing the Wrong Physical Disk 1 Identifying an Open Connector for the Enclosure Checking the Enclosure s Temperature 1 Verifying the Enclosure s EMM Firmware Version Enclosure and Backplane Health This screen displays the status of the enclosure or backplane and the components attached to the enclosure or backplane Enclosure and Backplane Status Component status is indicated by the severity A component with a Warning or Critical Failure status requires immediate attention to avoid data loss if possible A component s status may indicate the combined status of the component and its lower level objects See Determining the Health Status for Storage Components for more information It may be useful to review the Alert Log for events indicating why a component
278. the enclosure or backplane and replacing it causes the physical disk to spin up and return to Ready state In some cases a rescan is required for the controller to recognize configuration changes such as the removal of a disk See Rescan to Update Storage Configuration Changes for more information 4 NOTE This procedure is not available for physical disks that have been assigned as a hot spare or physical disks that are part of a virtual disk In addition this procedure is only supported for hotswap physical disks disks that reside in a carrier y NOTE This procedure is not supported on the CERC ATA100 4ch CERC SATA1 5 6ch and CERC SATA1 5 2s controllers For the PERC 4 IM controller this procedure is only supported on a PowerEdge 1855 system Initialize Does my controller support this feature See Supported Features The Initialize task prepares a physical disk for use as a member of a virtual disk Physical disks attached to PERC 3 Si 3 Di and CERC SATA1 5 6ch controllers must be initialized before they can be used On these controllers the Initialize task can only be performed once on a physical disk In some cases a physical disk that is in an Unknown state can be returned to a usable state by performing the Initialize task The Initialize task is not displayed for physical disks that have already been initialized using Storage Management or the BIOS A CAUTI ON This is a data destructive task Any virtual di
279. the virtual disk will be Resynching 3 Restore data to the virtual disk from backup Alerts 2146 through 2150 Received while Performing O Consistency Check Format or Other Operation If you receive alerts 2146 through 2150 while performing an operation other than a rebuild you should replace the damaged disk immediately to avoid data loss Do the following 1 Back up the degraded virtual disk to a fresh unused tape 2 Replace the damaged disk 3 Doa rebuild Read and Write Operations Experience Problems If the system is hanging timing out or experiencing other problems with read and write operations then there may be a problem with the controller cables or a device For more information see Cables Attached Correctly and Isolate Hardware Problems 1 O Stops When a Redundant Channel Fails If you have implemented channel redundancy on a PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC or 4 Di controller a failure of one channel causes I O to stop on the other channels included in the channel redundant configuration For the resolution to this problem see Channel Redundancy on PERC 3 DC 3 QC 4 DC 4e DC 4 Di and 4e Di Controllers A Task Menu Option is Not Displayed You may notice that the task menus do not always display the same task options This is because Storage Management only displays those tasks that are valid at the time the menu is displayed Some tasks are only valid for certain types of objects
280. tialization Does my controller support this feature See Supported Features On PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di 4e Si and 4e Di controllers background initialization of redundant virtual disks begins automatically after the virtual disk is created Because the initialization is run in the background other processes can continue while the initialization completes The background initialization of a redundant virtual disk prepares the virtual disk for parity information and improves write performance It is important that the background initialization be allowed to run to completion You can however cancel the background initialization When you do so the controller will restart the background initialization at a later time See Background Initialization on PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di 4e Si and 4e Di Controllers for more information Use the Cancel Background Initialization task to cancel a background initialization on a virtual disk NOTE On the PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di 4e Si and 4e Di controllers the controller firmware uses the rebuild rate setting to control the system resource allocation for the Background Initialization task See Set Rebuild Rate for more information Restore Dead Segments Does my controller support this feature See Supported Features Use the Restore Dead Segments task to recover data from a RAID 5 virtual disk that has been corrupted The
281. ting Virtual Disks Span Edit Creating Virtual Disks Virtual Disk Task Reconfigure Step 1 of 3 Reconfiguring Migrating Virtual Disks Virtual Disk Task Reconfigure Step 2 of 3 Starting and Target RAID Levels for Virtual Disk Reconfiguration and Capacity Expansion Virtual Disk Task Reconfigure Step 3 of 3 Maintain Integrity of Redundant Virtual Disks Format and Initialize Slow and Fast Initialize Rebuilding Redundant Information Virtual Disk Task Delete Virtual Disk Bad Block Management Virtual Disk Task Rename Virtual Disk Properties and Tasks Virtual Disk Task Change Policy Create Virtual Disk Express Wizard Step 1 of 2 Split Mirror Create Virtual Disk Express Wizard Step 2 of 2 Unmirror e e Create Virtual Disk Advanced Wizard Step 3 of 4 Create Virtual Disk Advanced Wizard Step 4 of 4 Virtual Disk Task Replace Member Disk Step 2 of 2 In order to implement RAID functions RAID controllers must create a virtual disk A virtual disk refers to storage created by a RAID controller from one or more physical disks Although a virtual disk may be created from several physical disks it is seen by the operating system as a single disk Depending on the RAID level used the virtual disk may retain redundant data in case of a disk failure or have particular performance attributes See Understanding RAID Concepts for more information K NOTE Virtual disks can only be created on a RAID control
282. trollers 1 Considerations for Hot Spares on PERC 3 Si 3 Di CERC SATA1 5 6ch S100 and S300 Controllers Global Hot Spare Considerations on a SAS 6 iR The following sections describe procedures for assigning a hot spare 1 Assign and Unassign Global Hot Spare 1 Assign and Unassign Dedicated Hot Spare Considerations for Hot Spares on PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di 4e Si 4e Di CERC ATA100 4ch PERC 5 E PERC 5 i PERC 6 E PERC 6 1 and CERC 6 Controllers On the PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di 4e Si 4e Di CERC ATA100 4ch PERC 5 E PERC 5 i PERC 6 E PERC 6 1 and CERC 6 1 controllers assigning a hot spare is equivalent to assigning a physical disk to replace another physical disk if it fails If more than one redundant virtual disk resides on the physical disk then all redundant portions of the physical disk are rebuilt 7 NOTE When rebuilding a physical disk you need to delete any nonredundant virtual disks such as RAID 0 that reside on the physical disk before rebuilding the physical disk When creating a virtual disk the physical disks included in the virtual disk can be different sizes When assigning a hot spare to a RAID 1 or 5 virtual disk the hot spare only needs to be the same size or larger as the smallest physical disk included in the virtual disk This is because when using a PERC 3 SC 3 DC 3 QC 4 SC 4 DC 4e DC 4 Di 4e Si 4
283. trollers have NiMHi batteries which need to be reconditioned approximately every six months to maintain reliability This reconditioning cycle requires a full discharge and recharge of the battery It ensures that the battery s capacity is being measured correctly and that the battery s full holdover time is maintained See RAID Controller Batteries for more information The controller battery should be reconditioned when either of the following occurs The controller reports the battery state as Degraded See Battery Properties for more information on the battery state The controller generates event 2145 indicating that the battery needs reconditioning For information on Alert Messages see the Dell OpenManage Server Administrator Messages Reference Guide on the Dell Support website at support dell com manuals The battery recondition takes approximately 8 to 10 hours During this time the battery is fully discharged and recharged The battery holdover time is reduced to zero during discharge and then restored as the battery is fully charged The write cache is disabled during the battery recondition resulting in performance degradation Do the following to recondition the controller battery 1 Expand the Storage tree object to display the controller objects 2 Expand the controller object 3 Select the Battery object 4 Select Recondition Battery from the Available Tasks drop down menu 5 Click Execute NOTE The Reco
284. ts a single physical disk or two or more when using Concatenated Using Concatenated does not provide data redundancy nor does it affect the read and write performance o Select RAID 0 for striping This selection groups n disks together as one large virtual disk with a total capacity of n disks Data is stored to the disks alternately so that they are evenly distributed Data redundancy is not available in this mode Read and write performance is enhanced o Select RAID 1 for mirroring disks This selection groups two disks together as one virtual disk with a capacity of one single disk The data is replicated on both disks When a disk fails the virtual disk continues to function This feature provides data redundancy and good read performance but slightly slower write performance Your system must have at least two disks to use RAID 1 o Select RAID 5 for striping with distributed parity This selection groups n disks together as one large virtual disk with a total capacity of n 1 disks When a disk fails the virtual disk continues to function This feature provides better data redundancy and read performance but slower write performance Your system must have at least three disks to use RAID 5 o Select RAID 6 for striping with additional parity information This selection groups n disks as one large virtual disk with a capacity of n 2 disks Two sets of parity information is alternately stored on all disks The virtual disk remains functi
285. tting the mode to Disabled prevents the Patrol Read task from running on the system To locate this task in Storage Management 1 Expand the Storage tree object to display the controller objects 2 Select a controller object 3 Select the Information Configuration subtab 4 Select Set Patrol Read Mode from the Available Tasks drop down menu 5 Click Execute You can also locate this task from the Change Controller Properties drop down menu For more information see Change Controller Properties Related I nformation 1 Start and Stop Patrol Read Start and Stop Patrol Read Does my controller support this feature See Supported Features When the Patrol Read mode is set to manual you can start the Patrol Read task or stop the task when it is running There are certain conditions under which the Patrol Read task cannot be run See Set Patrol Read Mode for more information To start or stop the Patrol Read task Click Start Patrol Read or Stop Patrol Read when ready To exit without starting or stopping the Patrol Read click Go Back to Previous Page To locate this task in Storage Management 1 Expand the Storage tree object to display the controller objects 2 Select a controller object 3 Select the Information Configuration subtab 4 Select Start Patrol Read or Stop Patrol Read from the Available Tasks drop down menu 5 Click Execute You can also locate this task from the Change Contro
286. ty by adding additional physical disks On some controllers you can also remove physical disks The changes you make to the physical disk selection are displayed in the Selected Physical Disks table K NOTE For a controller that has more than one channel it may be possible to configure a virtual disk that is channel redundant See Channel Redundancy and Thermal Shutdown for more information 2 Click Continue to go to the next screen or Exit Wizard if you want to cancel To locate this task in Storage Management 1 Expand the Storage tree object to display the controller objects 2 Expand a controller object 3 Select the Virtual Disks object 4 Select Reconfigure from the Available Tasks drop down menu 5 Click Execute Virtual Disk Task Reconfigure Step 2 of 3 Does my controller support this feature See Supported Features This screen enables you to select the RAID level and size for the reconfigured virtual disk To Reconfigure a Virtual Disk Step 2 of 3 1 Select the new RAID level for the virtual disk The available RAID levels depend on the number or physical disks selected and the controller The following describes possible RAID levels o Depending on the controller Concatenated enables you to combine the storage capacity of several disks or to create a virtual disk using only a single physical disk See Number of Physical Disks per Virtual Disk for information on whether the controller suppor
287. ual disk that uses the full capacity of its member physical disks For more information see Virtual Disk Task Reconfigure Step 1 of 3 Reconfiguring virtual disks The Reconfigure task is not available when you have more than one virtual disk using the same set of physical disks You can however reconfigure a virtual disk that is the only virtual disk residing on a set of physical disks See Virtual Disk Task Reconfigure Step 1 of 3 for more information Virtual disk names not stored on controller The names of the virtual disks that you create are not stored on the controller This means that if you reboot using a different operating system the new operating system may rename the virtual disk using its own naming conventions Creating and deleting virtual disks on cluster enabled controllers There are particular considerations for creating or deleting a virtual disk from a cluster enabled controller Review Creating and Deleting Virtual Disks on Cluster enabled Controllers before attempting to create the virtual disk Implementing channel redundancy A virtual disk is channel redundant when it maintains redundant data on more than one channel If one of the channels fails data will not be lost because redundant data resides on another channel For more information see Channel Redundancy and Thermal Shutdown Rebuilding data An failed physical disk that is used by both redundant and nonredundant virtual disks
288. ues are HDD Hard Disk Drive A HDD is a non volatile storage device which stores digitally encoded data on rapidly rotating platters with magnetic surfaces SSD Solid State Drive An SSD is a data storage device that uses solid state memory to store persistent data Unknown Storage Management is unable to determine the media type of the physical disk Used RAID This property displays how much of the physical disk space is being used by the virtual disks on the controller This property is Not Disk Space Applicable for physical disks attached to non RAID controllers In certain circumstances the Used RAID Disk Space displays a value of zero 0 even though a portion of the physical disk is being used This occurs when the used space is 0 005 GB or less The algorithm for calculating the used disk space rounds a figure of 0 005 GB or less to 0 Used disk space that is between 0 006 GB and 0 009 GB is rounded up to 0 01 GB Available RAID This property displays the amount of available space on the disk This property is Not Applicable for physical disks attached to non RAID Disk Space controllers Hot Spare This property indicates whether the disk has been assigned as a hot spare This property is Not Applicable for physical disks attached to non RAID controllers Negotiated This property displays the speed of data transfer that the disk negotiated while spinning up and upon initial communication with the Speed controller This speed is d
289. undant virtual disks Specific Problem Situations and Solutions This section contains additional trouble shooting problem areas Topics include 1 Physical Disk is Offline or Displays an Error Status 1 A Disk is Marked as Failed When Rebuilding in a Cluster Configuration 1 A Disk on a PERC 4 Di Controller Does not Return Online after a Prepare to Remove Receive a Bad Block Alert with Replacement Sense or Medium Error 1 Read and Write Operations Experience Problems 1 I O Stops When a Redundant Channel Fails 1 A Task Menu Option is Not Displayed 1 A Corrupt Disk or Drive Message Suggests Running autocheck During a Reboot Erroneous Status and Error Messages after a Windows Hibernation 1 Storage Management May Delay Before Updating Temperature Probe Status 1 Storage Management May Delay Displaying Storage Devices After Reboot You are Unable to Log into a Remote System 1 Cannot Connect to Remote Windows Server 2003 System Reconfiguring a Virtual Disk Displays Error in Mozilla Browser Physical Disks Display Under Connector Not Enclosure Tree Object Physical Disk is Offline or Displays an Error Status A physical disk may display an error status if it has been damaged taken offline or was a member of a virtual disk that has been deleted or initialized The following actions may resolve the error condition
290. upport SAS 5 IR SAS 6 iR PERC H200 Can an enclosure be attached to this controller No no no O Supported Features on the PERC S100 and S300 Controllers This section identifies the controller supported features and whether or not an enclosure can be attached to the controller 1 Controller Tasks Physical Disk Tasks Virtual Disk Tasks Virtual Disk Specifications 1 Supported RAID Levels Read Write Cache and Disk Cache Policy 1 Enclosure Support Controller Tasks Table A 46 Controller Tasks Supported on the PERC S100 and S300 Controllers Controller Task Name PERC S100 PERC S300 Create Virtual Disk Yes Physical Disk Tasks Table A 47 Physical Disk Tasks Supported by the PERC S100 and S300 Controllers Physical Disk Task Name PERC S100 PERC S300 Assign and Unassign Global Hot Spare Virtual Disk Tasks Table A 48 Virtual Disk Tasks Supported by the PERC S100 and S300 Controllers Virtual Disk Task Name PERC S100 PERC S300 Assign and Unassign Dedicated Hot Spare Create Virtual Disk Create Virtual Disk Advanced Wizard Create Virtual Disk Express Wizard Ino ves Yes Yes Blink Unblink Reconfigure Delete Last Virtual Disk Delete any Virtual Disk Virtual Disk Specifications Table A 49 Virtual Disk Specifications for the PERC S100 and S300 Controllers Virtual Disk Specification PE
291. uses to create the Security Key For more information on creating a Security Key see Manage Security Key Back to Contents Page Back to Contents Page Quick Access to Storage Status and Tasks Dell OpenManage Server Administrator Storage Management User s Guide Storage Dashboard and Storage Health Monitoring Disk Reliability on RAID Controllers Storage Health Using Alarms to Detect Failures Hot Spare Protection Policy Using Enclosure Temperature Probes Storage Component Severity Rescan to Update Storage Configuration Changes Storage Properties and Current Activity Time Delay in Displaying Configuration Changes Alerts or Events 1 0 and Reboot Requirements for Detecting Physical Disk Status Changes This section describes various methods to determine the status or health of your system s storage components and how to quickly launch available controller tasks Storage Dashboard and Storage Health For each controller the Storage Health tab or Storage Dashboard displays a summary of the controller severity health or status and a task menu for launching the controller tasks A link is provided to access virtual disk status and tasks Storage Health The Storage Dashboard displays the combined status for each controller and lower level storage components For example if the health of the storage system has been compromised due to a degraded enclosure both the enclosure He
292. vel o Depending on the controller Concatenated enables you to combine the storage capacity of several disks or to create a virtual disk using only a single physical disk See Number of Physical Disks per Virtual Disk for information on whether the controller supports a single physical disk or two or more when using Concatenated Using Concatenated does not provide data redundancy nor does it affect the read and write performance o Select RAID 0 for striping This selection groups n disks together as one large virtual disk with a total capacity of n disks Data is stored to the disks alternately so that they are evenly distributed Data redundancy is not available in this mode Read and write performance is enhanced o Select RAID 1 for mirroring disks This selection groups two disks together as one virtual disk with a capacity of one single disk The data is replicated on both disks When a disk fails the virtual disk continues to function This feature provides data redundancy and good read performance but slightly slower write performance Your system must have at least two disks to use RAID 1 o Select RAID 5 for striping with distributed parity This selection groups n disks together as one large virtual disk with a total capacity of n 1 disks When a disk fails the virtual disk continues to function This feature provides better data redundancy and read performance but slower write performance Your system must have at least three disks
293. ware and drivers are also supported See the Dell Support website at support dell com for the most recent driver and firmware requirements Minimum Required This property displays the minimum firmware version that is required by Storage Management This property is only displayed if the Firmware Version controller firmware does not meet the minimum requirement The firmware and drivers listed in the Readme file refer to the minimum supported version for these controllers Later versions of the firmware and drivers are also supported See the Dell Support website at support dell com for the most recent driver and firmware requirements Driver Version This property displays the version of the controller s driver The firmware and drivers listed in the Readme file refer to the minimum supported version for these controllers Later versions of the firmware and drivers are also supported See the Dell Support website at support dell com for the most recent driver and firmware requirements Minimum Required This property displays the minimum driver version that is required by Storage Management This property is only displayed if the Driver Version controller driver does not meet the minimum requirement The firmware and drivers listed in the Readme file refer to the minimum supported version for these controllers Later versions of the firmware and drivers are also supported See the Dell Support website at support dell com for the most recent driver a
294. will not result in data loss because redundant data resides on the enclosure attached to the other channel The PowerVault 220S and PowerVault 221S enclosures automatically shut down when their temperature reaches 55 degrees Celsius This shutdown occurs whether or not you have implemented channel redundancy or have Storage Management installed You can enable smart thermal shutdown using the command line interface For more information see the Dell OpenManage Server Administrator Command Line Interface User s Guide on the Dell Support website at support dell com manuals Changing the Mode on PowerVault 220S and PowerVault 221S Enclosures When toggling the bus configuration switch on a PowerVault 220S or PowerVault 221S enclosure the enclosure should be powered off The bus configuration switch is used to change the enclosure to split bus joined bus or clustered mode If you change the PowerVault 220S or PowerVault 221S enclosure mode with the enclosure powered on the enclosure may no longer be displayed by Storage Management and you may notice other erratic behaviors In addition the bus configuration switch on these enclosures is not rated for frequent toggling Enclosure Management In addition to the drop down menu Enclosure Tasks the following activities may be required for enclosure management Identifying the enclosure s service tag To identify the enclosure s service tag select the enclosure in the tree view and click
295. y and Security 3 Click SSL 4 Uncheck the Sending form data from an unencrypted page to an unencrypted page option Physical Disks Display Under Connector Not Enclosure Tree Object Storage Management polls the status of physical disks at frequent intervals When the physical disk is located in an enclosure Storage Management uses the data reported by the SCSI Enclosure Processor SEP to ascertain the status of the physical disk In the event that the SEP is not functioning Storage Management is still able to poll the status of the physical disk but Storage Management is not able to identify the physical disk as being located in the enclosure In this case Storage Management displays the physical disk directly below the Connector object in the tree view and not under the enclosure object You can resolve this problem by restarting the Server Administrator service or by rebooting the system For more information on restarting the Server Administrator service see the Dell OpenManage Server Administrator User s Guide Back to Contents Page Back to Contents Page Virtual Disks Dell OpenManage Server Administrator Storage Management User s Guide Create Virtual Disk Advanced Wizard Step 1 of 4 Create Virtual Disk Advanced Wizard Step 2 of 4 Assign and Unassign Dedicated Hot Spare Virtual Disk Task Replace Member Disk Step 1 of 2 Considerations Before Crea
296. ysical disk that is used in a virtual disk fails the assigned hot spare is activated to replace the failed physical disk without interrupting the system or requiring your intervention When a hot spare is activated it rebuilds the data for all redundant virtual disks that were using the failed physical disk You can change the hot spare assignment by unassigning a disk and choosing another disk as needed You can also assign more than one physical disk as a global hot spare K NOTE On SAS 6 iR controllers you cannot assign physical disks that have boot partitions as hot spares NOTE On PERC S100 and 300 controllers if there is free space available on the global hot spare it continues to function as a spare even after replacing a failed physical disk See Considerations for Hot Spares on PERC 3 Si 3 Di CERC SATA1 5 6ch S100 and S300 Controllers Global hot spares must be assigned and unassigned manually They are not assigned to specific virtual disks If you want to assign a hot spare to a virtual disk it will replace any physical disk that fails in the virtual disk then use the Assign and Unassign Dedicated Hot Spare K NOTE When deleting virtual disks all assigned global hot spares may be automatically unassigned when the last virtual disk associated with the controller is deleted A CAUTI ON The SAS 6 iR controller enables you to assign two physical disks as global hot spare Assigning a physical disk as a globa

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