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Dell PowerVault MD3220i User's Manual

1. 4 Planning MD3200i Series Storage Array Terms and Concepts Physical Disks Virtual Disks and Disk Groups Physical Disks 0 000000 Physical Disk States Self Monitoring Analysis and Reporting Technology Virtual Disks and Disk Groups Virtual Disk States 0 RAIDLevels 00 4 RAID Level Usage SegmentSize 004 Virtual Disk Operations Virtual Disk Initialization Background Initialization Foreground Initialization Contents 32 Consistency Check 43 Media Verification 44 Cycle TIME essa ee Pane a dK ag eS 44 Virtual Disk Operations Limit 44 Disk Group Operations 45 RAID Level Migration 45 Segment Size Migration 45 Virtual Disk Capacity Expansion 46 Disk Group Expansion 46 Disk Group Defragmentation 46 Disk Group Operations Limit 46 RAID Background Operations Priority 47 Virtual Disk Migration and Disk Roaming 48 Disk Migration 48 DiskRoaming 02 50 Advanced Features 50 Host Server to Virtual Disk Mapping 50 HostTypes 202000 51 Snapshot Virtual Disks
2. 51 Snapshot Repository Virtual Disk 52 Virtual Disk Copy 0 52 Virtual Disk Recovery 53 Using Snapshot and Disk Copy Together 53 Multi Path Software 54 Preferred and Alternate Controllers and Paths 54 Virtual Disk Ownership 55 Load Balancing 4 55 Monitoring MD3200i Series System Performance 56 Contents 5 Configuration Overview 59 User Interface 0 59 Enterprise Management Window 60 Array Management Window aaau 61 6 Configuration About Your Storage Array aoaaa aaa aaa 63 Out of Band and In Band Management 63 Storage Arrays onau aaa 64 Adding Storage Arrays 64 Setting Up Your Storage Array a a aaa 66 Locating Storage Arrays 67 Naming or Renaming Storage Arrays 68 SettingaPassword 69 Viewing Storage Array Connections 70 Adding Editing a Comment to an Existing Storage Array 71 Removing Storage Arrays 71 Enabling Premium Features 72 Failover AlertDisplay 72 Changing the Cache Settings onthe Storage Array 72 Changing Expansion Enclosure IDNumbers 04 73 Changing the Enclosure Order inthe Physical Pane 73 Configuring Alert Notifications 74 Configuring E mail
3. The Add Free Capacity window is displayed Based on the RAID level and the enclosure loss protection of the current disk group a list of unassigned physical disks appears K NOTE If the RAID level of the disk group is RAID Level 5 or RAID Level 6 and the expansion enclosure has enclosure loss protection Display only physical disks that will ensure enclosure loss protection appears and is selected by default 4 inthe Available physical disks area select physical disks up to the allowed maximum number of physical disks K NOTE You cannot mix different media types or different interface types within a single disk group or virtual disk Configuration Disk Groups and Virtual Disks 137 5 Click Add A message prompts you to confirm your selection 6 To add the capacity to the disk group click Yes You can also use the Command Line Interface CLI on both Windows and Linux hosts to add free capacity to a disk group See the CLI Guide for more information After the capacity expansion is completed additional free capacity is available in the disk group for creation of new virtual disks or expansion of existing virtual disks Virtual Disk Expansion Virtual disk expansion is a dynamic modification operation that increases the capacity of standard virtual disks K NOTE Snapshot repository virtual disks can be expanded from the CLI or from MDSM All other virtual disk types are expandable only from the CLI If you r
4. When you add storage arrays by using this management method you need to specify only the host name or IP address of the host After you add the specific host name or IP address the host agent software automatically detects any storage arrays that are connected to that host A CAUTION Some operating systems can be used only as storage management stations For more information about the operating system that you are using refer to the MD PowerVault Support Matrix at support dell com manuals For more information see the PowerVault Modular Disk Storage Manager online help topics Access Virtual Disk Each RAID controller module in an MD3200i Series storage array maintains a special virtual disk called the access virtual disk The host agent software uses the access virtual disk to communicate management requests and event information between the storage management station and the RAID controller module in an in band managed storage array The access virtual disk is not available for application data storage The default LUN is 31 Storage Arrays You must add the storage arrays to MDSM before you can setup the storage array for optimal use Adding Storage Arrays You can add storage arrays only in the EMW You can e Automatically discover storage arrays e Manually add storage arrays K NOTE Verify that your host or management station network configuration including station IP address subnet mask and default gateway is co
5. e A virtual disk copy has a status of In Progress e The preferred RAID controller module of the source virtual disk fails e The ownership transfer does not occur automatically in the failover 168 l Configuration Premium Feature Virtual Disk Copy Copy Manager After you create a virtual disk copy by using the Create Copy Wizard you can monitor the virtual disk copy through the Copy Manager From the Copy Manager a virtual disk copy may be re copied stopped or removed You can also modify the attributes such as the copy priority and the target virtual disk Read Only attribute You can view the status of a virtual disk copy in the Copy Manager Also if you need to determine which virtual disks are involved in a virtual disk copy you can use the Copy Manager or the storage array profile Copying the Virtual Disk You can create a virtual disk copy by using the Create Copy Wizard TX CAUTION Possible loss of data access A virtual disk copy overwrites data on the target virtual disk A virtual disk copy automatically makes the target virtual disk read only to hosts You might want to keep this attribute enabled to preserve the data on the target virtual disk A CAUTION If you decide not to preserve the data on the target virtual disk after the virtual disk copy has completed disable the Read Only attribute for the target virtual disk See Virtual Disk Read Write Permissions on page 1 1 for more information on enabling
6. 177 OVeWieW ag ack eos Se et a ew 177 Using DM Multipathing Devices 178 Prerequisite Steps 178 Device Mapper Configuration Steps 179 Linux Host Server Reboot Best Practices 183 Important Information About Special Partitions 183 Limitations and Known Issues 184 Troubleshooting 185 15 Management Firmware Downloads 187 Downloading RAID Controller and NVSRAM Packages 187 Downloading Both RAID Controller and NVSRAM Firmware 188 Downloading Only NVSRAM Firmware 190 Downloading Physical Disk Firmware 192 12 Contents Downloading MD1200 Series Expansion Module EMM Firmware Self Monitoring Analysis and Reporting Technology SMART Media Errors and Unreadable Sectors 16 Management Installing Array Components Recommended Tools Front Bezel Optional Removing the Front Bezel Installing the Front Bezel Hard Drives Removing a Drive Blank Installing a Drive Blank Removing a Hard Drive Installing a Hard Drive Removing a Hard Drive From a Hard Drive Carrier Installing a Hard Drive Into a Drive Carrier RAID ControllerModule Removing a RAID Controller Module Blank Installing a RAID Controller Mod
7. 78 Configuration About Your Storage Array A learn cycle starts automatically when you install a new battery module Learn cycles for batteries in both RAID controller modules in a duplex system occur simultaneously Leam cycles are scheduled to start automatically at regular intervals at the same time and on the same day of the week The interval between cycles is described in weeks Use the following guidelines to adjust the interval e You can use the default interval e You can run a learn cycle at any time e You can set the learn cycle earlier than the currently scheduled time e You cannot set the learn cycle to start more than seven days later than the currently scheduled time To change the battery settings perform these steps 1 In the AMW select Storage Array Change Battery Settings The Battery Settings dialog opens 2 In Battery location select a battery Check these details about the battery e Battery status e Battery age Days until replacement For more information see the PowerVault Modular Disk Storage Manager online help topics Setting the Storage Array RAID Controller Module Clocks You can use the Synchronize RAID Controller Module Clocks option to synchronize the storage array RAID controller module clocks with the storage management station This option makes sure that the event timestamps written by the RAID controller modules to the Event Log match the event timestamps written to host log files
8. In the Services dialog select Modular Disk Storage Manager Agent If the modular disk storage manager agent is running click Action Stop then wait approximately 5 seconds 4 Click Action gt Start Linux To start or restart the host context agent software in Linux enter the following command at the prompt SMagent start The SMagent software might take a little time to initialize The cursor is shown but the terminal window does not respond When the program starts the following message is displayed SMagent started After the program completes the startup process text similar to the following messages is displayed Modular Disk Storage Manager Agent Version 90 02 A6 14 Built Wed Feb 03 06 17 50 CST 2010 Copyright C 2009 2010 Dell Inc All rights reserved Checking device lt n a gt dev sg10 Activating Checking device dev sdb dev sgl1 Skipping Checking device lt n a gt dev sg3 Activating Checking device lt n a gt dev sg4 Activating Checking device lt n a gt dev sg5 Activating Checking device lt n a gt dev sg6 Activating Checking device lt n a gt dev sg7 Activating Checking device lt n a gt dev sg8 Activating Checking device lt n a gt dev sg9 Activating Troubleshooting Your Storage Array Software 247 248 Troubleshooting Your Storage Array Software Troubleshooting Your Array Safety First For you and Your Array A CAUTION
9. Select the relevant Physical disks in the Unassigned physical disks area as hot spares for the selected disk and click OK To unassign hot spares in the Hot Spare Coverage window select physical disks in the Hot spare physical disks area Review the information about the hot spare coverage in the Details area Click Unassign A message prompts you to confirm the operation Type yes and click OK Configuration Disk Groups and Virtual Disks Hot Spares and Rebuild A valuable strategy to protect data is to assign available physical disks in the storage array as hot spares A hot spare adds another level of fault tolerance to the storage array A hot spare is an idle powered on stand by physical disk ready for immediate use in case of disk failure If a hot spare is defined in an enclosure in which a redundant virtual disk experiences a physical disk failure a rebuild of the degraded virtual disk is automatically initiated by the RAID controller modules If no hot spares are defined the rebuild process is initiated by the RAID controller modules when a replacement physical disk is inserted into the storage array Global Hot Spares The MD3200i series supports global hot spares A global hot spare can replace a failed physical disk in any virtual disk with a redundant RAID level as long as the capacity of the hot spare is equal to or larger than the size of the configured capacity on the physical disk it replaces includin
10. 205 5 Connect all the power cables to the array 6 Turn on the array and the host server Figure 16 7 Removing and Installing a RAID controller module Blank 1 release latch 2 RAID controller module blank Installing a RAID Controller Module Blank To install a RAID controller module blank align the blank with the RAID controller module bay and insert the blank into the chassis until it clicks into place 206 Management Installing Array Components Removing a RAID Controller Module A CAUTION Many repairs may only be done by a certified service technician You should only perform troubleshooting and simple repairs as authorized in your product documentation or as directed by the online or telephone service and support team Damage due to servicing that is not authorized by Dell is not covered by your warranty Read and follow the safety instructions that came with the product 1 Disconnect the cables connected to the RAID controller module 2 Push down on the release tab and pull the release lever away from the chassis See Figure 16 8 3 Grasp the release lever and pull the module away from the chassis K NOTE To avoid damage to the sensitive EMI contacts on the RAID controller module do not stack RAID controller module s Figure 16 8 Removing and Installing a RAID controller module 1 RAID controller module 2 release tab 3 release lever Management Installing Array Components 207 Installing a
11. 5 Place the disk group offline 6 Obtain blank physical disk modules or new physical disks On the target storage array 1 Verify that the target storage array has available physical disk slots 2 Verify that the target storage array supports the physical disks that you import Verify that the target storage array can support the new virtual disks Verify that the latest version of firmware is installed on the RAID controller module Import Disk Group The import disk group operation adds the imported disk group to the target storage array After you complete the import disk group operation all of the physical disks have Optimal status Any associated virtual disks or free capacity nodes are now shown in MDSM installed on the target storage array K NOTE You lose access to your data during the export import process K NOTE You must export a disk group before you move the disk group or import the disk group Importing a Disk Group K NOTE You must insert all of the physical disks that are part of the disk group into the enclosure before the disk group can be imported On the target storage array 1 Insert the exported physical disks into the available physical disk slots 2 Review the Import Report for an overview of the disk group that you are importing Check for non importable components 4 Confirm that you want to proceed with the import procedure 140 Configuration Disk Groups and Virtual Disks K NOTE Som
12. Align the holes on the backplane with the holes on the array Tighten the captive screw to secure the backplane to the chassis See Figure 16 16 for PowerVault MD3200i or Figure 16 17 for PowerVault MD3220i Replace the screws that secure the backplane to the chassis See Figure 16 16 for PowerVault MD3200i or Figure 16 17 for PowerVault MD3220i Align the slots on the RAID controller module power supply cage with the tabs on the chassis See Figure 16 15 Push the RAID controller module power supply cage toward the front of the array Replace the screws that secure the RAID controller module power supply cage to the chassis Replace the control panel See Installing the Control Panel on page 216 Replace the power supply cooling fan modules See Installing a Power Supply Cooling Fan Module on page 214 Replace the hard drives See Installing a Hard Drive on page 202 Connect all the cables to the array Turn on the array and the host server Management Installing Array Components Management Firmware Inventory A storage array is made up of many components which might include RAID controller modules physical disks and enclosure management modules EMMs Each of these components contains firmware Some versions of firmware are dependent on other versions of firmware To capture information about all of the firmware versions in the storage array view the firmware inventory If the firmware inventory does not
13. Failover Clusters on support dell com manuals The destination of a snapshot repository virtual disk is determined based on the free capacity available in the disk group A snapshot repository virtual disk requires a minimum 8 MB of free capacity You can choose your preferred creation path simple or advanced if the disk group of the source virtual disk has the required amount of free space If 8 MB of free capacity is not available in the disk group of the source virtual disk the Create Snapshot Virtual Disks feature defaults to the advanced path see Creating a Snapshot Virtual Disk Using the Advanced Path on page 149 In the advanced path option you can choose to place the snapshot repository virtual disk in another disk group or you can use unconfigured capacity on the storage array to create a new disk group K NOTE You can create concurrent snapshots of a source virtual disk on both the source disk group and on another disk group Before creating a Snapshot Virtual Disk The following types of virtual disks are not valid source virtual disks snapshot repository virtual disks snapshot virtual disks target virtual disks that are participating in a virtual disk copy K NOTE Virtual Disk Copy is an Advanced Premium feature e You cannot create a snapshot of a virtual disk that contains unreadable sectors Configuration Premium Feature Snapshot Virtual Disks 151 e You must satisfy the requirements of you
14. It provides power to the RAID controller module in the event of a power outage For information on removing and installing the BBU see RAID Controller Module Backup Battery Unit on page 210 K NOTE For virtual disks the RAID controller firmware changes the data cache setting based on the state of the battery If the battery is missing or does not have sufficient charge the controller flushes the cache and sets the write cache attribute to Write Through for all virtual disks When the battery is replaced Write Back is re enabled Storage Array Thermal Shutdown The system automatically shuts down when system temperature exceeds the safe threshold The battery backup unit protects against data loss by providing power to offload to non volatile memory in the event of power loss It is not necessary to shut down any MD1200 Series expansion enclosures attached to the storage array when thermal shutdown occurs Temperature threshold values determine the temperature at which shutdown occurs These thresholds cannot be changed 34 Planning RAID Controller Modules Table 3 1 Shutdown Threshold Type Threshold Temperature Exceeding Event Description Nominal failure threshold A critical event is set Maximum failure threshold Shutdown of the system power supplies occurs within three minutes Shutdown threshold Shutdown of the system power supplies occurs within five seconds System Password Reset The storage array syste
15. NOTE If you are setting the password for the first time leave the Current password blank 4 Type the New password Re type the new password in Confirm new password K NOTE The password in Confirm new password and New password must be exactly the same Configuration About Your Storage Array 69 6 Click OK K NOTE You are not prompted for a password when you attempt to change the storage array configuration in the current management session Password Guidelines Follow these guidelines when you create a password e Use secure passwords for your storage array A password should be easy for you to remember but difficult for others to determine Consider using numbers or special characters in the place of letters such as a 1 in the place of the letter I or the at sign in the place of the letter a e For increased protection use a long password with at least 15 alphanumeric characters The maximum password length is 30 characters e Passwords are case sensitive K NOTE You can attempt to enter a password up to ten times before the storage array enters a lockout state Before you can try to enter a password again you must wait 10 minutes for the storage array to reset To reset the password press the password reset switch on your RAID controller module see Figure 3 1 Viewing Storage Array Connections You can use the View Connections option to view the expansion enclosures connected to the RAID controller m
16. You can migrate from one RAID level to another depending on your requirements For example fault tolerant characteristics can be added to a stripe set RAID 0 by converting it to a RAID 5 set MDSM provides information about RAID attributes to assist you in selecting the appropriate RAID level You can perform a RAID level migration while the system is still running and without rebooting which maintains data availability Segment Size Migration Segment size refers to the amount of data in kilobytes that the storage array writes on a single physical disk in a virtual disk before writing data on the next physical disk Valid values for the segment size are 8 16 32 64 128 256 and 512 KB Dynamic segment size migration enables the segment size of a given virtual disk to be changed A default segment size is set when the virtual disk is created based on such factors as the RAID level and expected usage You can change the default value if segment size usage does not match your needs When considering a segment size change two scenarios illustrate different approaches to the limitations Planning MD3200i Series Storage Array Terms and Concepts 45 If I O activity stretches beyond the segment size you can increase it to reduce the number of disks required for a single I O Using a single physical disk for a single request frees disks to service other requests especially when you have multiple users accessing a database or stora
17. e Select Obtain configuration automatically from DHCP server to automatically activate target discovery for IPv4 settings using the Dynamic Host Configuration Protocol DHCP You can also refresh the DHCP Configuration Using iSCSI e Select Specify Configuration and type the IPv address to activate the target discovery Type the iSNS server IP address in the IPv6 settings area to activate the target discovery After you manually enter an IP address you can also click Advanced to configure the customized TCP listening ports If you do not want to allow discovery sessions that are not named select the Disallow un named discovery sessions K NOTE Un named discovery sessions are discovery sessions that are permitted to run without a target name With an un named discovery session the target name or the target portal group tag is not available to enforce the iSCSI session identifier ISID rule NOTE 5 Click OK Configuring the iSCSI Host Ports The default method for configuring the iSCSI host ports for IPv4 addressing is DHCP Always use this method unless your network does not have a DHCP server It is advisable to assign static DHCP addresses to the iSCSI ports to ensure continuous connectivity For Ipv6 addressing the default method is Stateless auto configuration Always use this method for IPv6 To configure the iSCSI host ports 1 In the AMW select the Setup tab 2 Select Configure iSCSI Host Ports The C
18. etc init d multipathd status Configuration Device Mapper Multipath for Linux 185 Question Answer Why does the multipath l1 First verify if the devices are discovered or not command output not show any The command cat proc scsi scsi devices displays all the devices that are already discovered Then verify the multipath conf to ensure that it is been updated with proper settings After this run multipath Then run multipath 11 the new devices should show up Why is a newly mapped LUN not Run rescan_dm_devs in any directory This assigned a multipathing device should bring up the devices node I have no LUNs mapped before Run rescan_dm_devs instead of rescan Then I map some LUNs After scsi bus for LUN 0 reconfiguration running rescan scsi bus sh LUN 0 doesn t show up I removed a LUN But the The multipathing device is still there after you multipathing mapping is still remove the LUNs Run multipath f there lt device node for the deleted LUN gt to remove the multipathing mapping For example if device devices related with dev dm 1 is deleted you must run multipath f dev dm 1 to remove dev dm 1 from DM mapping table If multipathing daemon is stopped restarted run multipath F to flush out all stale mappings Failback does not happen as Sometimes the low level driver cannot auto expected with the array detect devices coming back with the array Run rescan_dm devs to rescan host server SC
19. Click OK In the Mappings tab assign mappings between the snapshot virtual disk and the host that accesses the snapshot virtual disk To register the snapshot virtual disk with the host operating system run the host based hot_add utility To associate the mapping between the storage array name and the virtual disk name run the host based SMdevices utility Specifying Snapshot Virtual Disk Names Choose a name that helps you associate the snapshot virtual disk and snapshot repository virtual disk with its corresponding source virtual disk The following information is useful when naming virtual disks By default the snapshot name is shown in the Snapshot virtual disk name field as lt source virtual disk name gt lt sequence number gt where sequence number is the chronological number of the snapshot relative to the source virtual disk 154 Configuration Premium Feature Snapshot Virtual Disks The default name for the associated snapshot repository virtual disk that is shown in the Snapshot repository virtual disk field is lt source virtual disk name gt R lt sequence number gt For example if you are creating the first snapshot virtual disk for a source virtual disk called Accounting the default snapshot virtual disk is Accounting 1 and the associated snapshot repository virtual disk default name is Accounting R1 The default name of the next snapshot virtual disk you create based on Accounting is
20. Device Mapper Multipath for Linux T O may hang when a Device Mapper device is deleted before the volume is unmounted e Ifthe scsi_dh_rdac module is not included in initrd slower device discovery may be seen and the syslog may become populated with buffer I O error messages e T O may hang if the host server or storage array is rebooted while I O is active All I O to the storage array should be stopped before shutting down or rebooting the host server or storage array e With the MD3200i Series array after a failed path is restored failback does not occur automatically because the driver cannot auto detect devices without a forced rescan Run the command rescan_dm_devs to force a rescan of the host server This restores the failed paths enabling failback to occur e Failback can be slow when the host system is experiencing heavy I O The problem is exacerbated if the host server is also experiencing very high CPU utilization e The Device Mapper Multipath service can be slow when the host system is experiencing heavy I O The problem is exacerbated if the host server is also experiencing very high CPU utilization e If the root disk is not blacklisted in the multipath conf file a multipathing node may be created for the root disk The command multipath 11 lists vendor product ID which can help identify this issue Troubleshooting Question Answer How can I check if multipathd is Run the following command running
21. You can also click the Advanced Host Port Settings to configure the TCP listening port settings and Jumbo frame settings 7 To enable the Internet Control Message Protocol ICMP select Enable ICMP PING responses The ICMP setting applies to all the iSCSI host ports in the storage array configured for IPv4 addressing K NOTE The ICMP is one of the core protocols of the Internet Protocol suite The ICMP messages determine whether a host is reachable and how long it takes to get packets to and from that host 8 Click OK 86 Configuration Using iSCSI Advanced iSCSI Host Ports Settings K NOTE Configuring the advanced iSCSI host ports settings is optional Use the advanced settings for the individual iSCSI host ports to specify the TOP frame size the virtual LAN and the network priority Table 7 2 Advanced iSCSI Host Port Settings Setting Description Virtual LAN VLAN A method of creating independent logical networks within a physical network Several VLANs can exist within a network VLAN 1 is the default VLAN NOTE For more information on creating and configuring a VLAN with MD Support Manager in the AMW click the Support tab then click View Online Help Ethernet Priority The network priority can be set from lowest to highest Although network managers must determine these mappings the IEEE has made broad recommendations e 0 lowest priority default e 4 1anges from loss eligible tra
22. array s Deployment Guide Planning RAID Controller Modules 31 RAID Controller Module Connectors and Features Figure 3 1 MD3200i Series iSCSI RAID Controller Module Item Component ne 12 13 14 15 16 18 19 Function 1 SAS OUT port 2 iSCSI IN port 0 3 iSCSI IN port 1 4 iSCSI IN port 2 5 iSCSI IN port 3 6 Management port ethernet connector 7 Debug port Provides SAS connection for cabling to an expansion enclosure Provides host to controller iSCSI 1Gbps Ethernet connection Provides host to controller iSCSI 1Gbps Ethernet connection Provides host to controller iSCSI 1Gbps Ethernet connection Provides host to controller iSCSI 1Gbps Ethernet connection Provides a 100 1000 Mbps Ethernet connection for out of band management of the enclosure Dell support only 32 Planning RAID Controller Modules Item Component Function 8 SAS OUT port Lights green when all four links are connected link fault LED Lights amber when one to three links are disconnected Off when all links in the port are disconnected or cable is disconnected 9 iSCSI IN port link Lights green when ethernet connection at 1Gbps LED established Off when there is no link 10 Controller power LED Lights green when controller is turned on Off when controller is not turned on 11 iSCSI IN port activity Lights green when there is no activity on 1Gbps LED connection Blinks green when t
23. components that are associated with source virtual disks snapshot virtual disks snapshot repository virtual disks disk groups unconfigured capacity and free capacity in a storage array To view the physical associations 1 In the AMW select a node in the Logical pane of the Logical tab or in the Topology pane of the Mappings tab 2 Select View Associated Physical Components Alternatively if the selected node is a virtual disk you can right click the node to open a pop up menu and select View gt Associated Physical Components If the selected node is a disk group unconfigured capacity or free capacity you can right click the node to open a pop up menu and select View gt Associated Physical Components 234 Troubleshooting Your Storage Array Software The View Associated Physical Components dialog appears with blue dots next to the physical components that are associated with the selected node 3 To close the View Associated Physical Components dialog click Close Finding Nodes You can use the Find option to search for a particular node on the Logical tab the Physical tab or the Mappings tab of the Array Management Window The search might be based on a particular node name the RAID level virtual disk capacity or specific free capacity nodes The search might be based also on one of these combinations e The node name and the RAID level e The node name and the virtual disk capacity To find nodes 1 I
24. if not step 15 Troubleshooting Your Storage Array Software 14 15 16 17 18 19 20 21 22 Remove the host with the Unresponsive status from the EMW and select Add Storage Array to add the host again If the host does not return to Optimal status go to step 16 Ensure that the host is turned on and operational and that the host adapters have been installed Check all external cables and switches or hubs to make sure that no visible damage exists and that they are securely connected Make sure the host context agent software is installed and running If you started the host system before you were connected to the RAID controller module in the storage array the host context agent software is not able to detect the RAID controller modules If this is the case make sure that the connections are secure and restart the host context agent software If you have recently replaced or added the RAID controller module restart the host context agent software so that the new RAID controller module is recognized If the problem still exists make the appropriate host modifications check with other administrators to see if a firmware upgrade was performed on the RAID controller module from another storage management station If a firmware upgrade was performed the EMW on your management station might not be able to locate the new AMW software needed to manage the storage array with the new version of the firmware
25. lt gt 116 Configuration Disk Groups and Virtual Disks The pass phrase that you enter is masked NOTE Create Key is active only if the pass phrase meets the above mentioned criterion 5 In Confirm pass phrase re enter the exact string that you entered in Pass phrase Make a record of the pass phrase that you entered and the security key identifier that is associated with the pass phrase You need this information for later secure operations 6 Click Create Key 7 Make a record of the security key identifier and the file name from the Create Security Key Complete dialog and click OK After you have created a security key you can create secure disk groups from security capable physical disks Creating a secure disk group makes the physical disks in the disk group security enabled Security enabled physical disks enter Security Locked status whenever power is re applied They can be unlocked only by a RAID controller module that supplies the correct key during physical disk initialization Otherwise the physical disks remain locked and the data is inaccessible The Security Locked status prevents any unauthorized person from accessing data on a security enabled physical disk by physically removing the physical disk and installing the physical disk in another computer or storage array Changing a Security Key When you change a security key a new security key is generated by the system The new key replaces the previ
26. migration operations can continue K NOTE Disk groups from multiple storage arrays should not be migrated at the same time to a storage array that has no existing physical disks Use cold virtual disk migration for the disk groups from one storage array Planning MD3200i Series Storage Array Terms and Concepts 49 e Enabling premium features before migration Before migrating disk groups and virtual disks enable the required premium features on the destination storage array If a disk group is migrated from a MD3200i storage array that has a premium feature enabled and the destination array does not have this feature enabled an Out of Compliance error message can be generated Disk Roaming You can move physical disks within an array The RAID controller module automatically recognizes the relocated physical disks and logically places them in the proper virtual disks that are part of the disk group Disk roaming is permitted when the RAID controller module is either online or powered off K NOTE The disk group must be exported before moving the physical disks Advanced Features The RAID enclosure supports several advanced features e Virtual Disk Snapshots e Virtual Disk Copy e High Performance Tier K NOTE Virtual Disk Snapshot Virtual Disk Copy and High Performance Tier are premium features that must be activated separately If you have purchased these features an activation card is supplied that contains instructi
27. should be limited to eight Under high I O loads the limit should be three e The snapshot virtual disks created in the storage management software are differential snapshots Plex snapshots are not supported e Virtual disks to be used as source virtual disks for VSS snapshots should have names no longer than 16 characters The VSS hardware provider uses the base virtual disk name as a prefix for the snapshot and repository virtual disk names The resulting snapshot and repository names are too long if the source virtual disk name exceeds 16 characters K NOTE A volume is another term for virtual disk For more information on VDS and VSS see microsoft com 224 Management System Interfaces Troubleshooting Your Storage Array Software Start Up Routine Look and listen during the array s start up routine for the indications described in Table 19 1 For a description of the front and back panel indicators see Planning About Your Storage Array on page 23 Table 19 1 Start Up Routine Indications Look listen for Action Alert messages See your storage management documentation An unfamiliar constant scraping or grinding See Getting Help on page 259 sound when you access a physical disk K NOTE At least two physical disks must be installed in the array Device Health Conditions When you open the Enterprise Management Window EMW the Dell PowerVault Modular Disk Storage Management software MDSM
28. the default option Every x hours Sends an alert e mail after the specified time interval if an event occurred during that time interval You can select this option only if you have selected either Event Profile or Event Support in the Information To Send drop down list 10 Click OK An alert icon appears next to each node in the Tree view where an alert is set To ensure that the e mail is sent successfully e You must provide a SMTP mail server name and an e mail sender address for the e mail addresses to work e The e mail addresses that you had previously configured appear in the Configured e mail addresses area 76 Configuration About Your Storage Array e You must use fully qualified e mail addresses for example name mycompany com e You can configure multiple e mail addresses before you click OK Configuring SNMP Alerts To add a management console to the list of addresses configured to receive SNMP alerts 1 Open the Configure Alerts dialog by performing one of these actions e In the Tree view or the Table view on the Devices tab in the EMW select a node and select Edit Configure Alerts Go to step 3 e In the Setup tab in the EMW select Configure Alerts Go to step 2 2 Select one of the following radio buttons to specify an alert level e All storage arrays Select this option to send an alert notification about events on all storage arrays e An individual storage array Select this option to
29. 5 2 Align the screw holes on the hard drive with the back set of holes on the hard drive carrier When aligned correctly the back of the hard drive is flush with the back of the hard drive carrier 3 Attach the four screws to secure the hard drive to the hard drive carrier RAID Controller Module An MD3200i series storage array supports single as well as dual RAID controller configurations If only one RAID controller module is installed in your array it must be installed in slot 0 You must install the RAID controller module blank in slot 1 A CAUTION RAID controller modules can be removed and installed without turning off the array It is recommended that you do not remove the RAID controller module while data is being transferred Replacing or installing a RAID controller module that is connected to a host server causes it to loose communication with the array and may require a reboot of the host server Removing a RAID Controller Module Blank A CAUTION To maintain proper system cooling you must install a RAID controller module blank in the empty slot Turn off the array and host server Disconnect all the power cables connected to the array To remove the RAID controller module blank press down on the release latch and pull the blank away from the array See Figure 16 7 Install RAID controller modules in slot 0 and 1 See Installing a RAID Controller Module on page 208 Management Installing Array Components
30. Accounting 2 with the corresponding snapshot repository virtual disk named as Accounting R2 by default Whether you use the software supplied sequence number that by default populates the Snapshot virtual disk name or the Snapshot repository virtual disk name field the next default name for a snapshot or snapshot repository virtual disk still uses the sequence number determined by the software For example if you give the first snapshot of source virtual disk Accounting the name Accounting 8 and do not use the software supplied sequence number of 1 the default name for the next snapshot of Accounting is still Accounting 2 The next available sequence number is based on the number of existing snapshots of a source virtual disk If you delete a snapshot virtual disk its sequence number becomes available again You must choose a unique name for the snapshot virtual disk and the snapshot repository virtual disks or an error message is displayed Names are limited to 30 characters After you reach this limit in either the snapshot virtual disk name or the Snapshot repository virtual disk name fields you can no longer type in the field If the source virtual disk is 30 characters the default names for the snapshot and its associated snapshot repository virtual disk use the source virtual disk name truncated enough to add the sequence string For example for Host Software Engineering Group GR 1 the default snapshot name is Host Software En
31. Alerts 74 Configuring SNMP Alerts 77 Battery Settings aoaaa 78 Contents Setting the Storage Array RAID Controller Module Clocks 79 7 Configuration Using iSCSI 81 Changing the iSCSI Target Authentication 81 Entering Mutual Authentication Permissions 82 Creating CHAP Secrets 82 Initiator CHAP Secret 83 Target CHAP Secret 83 Valid Characters for CHAP Secrets 83 Changing the iSCSI Target Identification 84 Changing the iSCSI Target Discovery Settings 84 Configuring the iSCSI Host Ports 85 Advanced iSCSI Host Ports Settings 87 Viewing or Ending an iSCSI Session 88 Viewing iSCSI Statistics and Setting Baseline Statistics 89 Edit Remove or Rename Host Topology 90 8 Configuration Event Monitor 91 Enabling or Disabling the Event Monitor 91 WINdOWS ico 2p bs ek Se Ae bdo as 92 LINUX ress aE ne A Bie BY Sets ea 92 Contents 9 Configuration About Your Host 93 Configuring Host Access 93 Using the MappingsTab 94 DefiningaHost 00 94 Removing Host Access 96 Managing HostGroups 96 Creating a Host Group 96 Moving a Host to a Different Host Group 97 Removing aHostGroup 98 Host T
32. Edit Configure Alerts Go to step 3 e In the Setup tab in the EMW select Configure Alerts Go to step 2 Select one of the following radio buttons to specify an alert level e All storage arrays Select this option to send an alert e mail about events on all storage arrays e An individual storage array Select this option to send an alert e mail about events that occur on only a specified storage array These results occur depending on your selection e If you selected all storage arrays the Configure Alerts dialog appears e Ifyou selected an individual storage array the Select Storage Array dialog appears Select the storage array for which you want to receive e mail alerts and click OK The Configure Alerts dialog appears e If you do not know which storage array to select click Blink to turn on the LEDs of the storage array In the Configure Alerts dialog select the Mail Server tab In Mail server type the name of the Simple Mail Transfer Protocol SMTP mail server The SMTP mail server is the name of the mail server that forwards the alert e mails to the configured e mail addresses In Email sender address type the e mail sender address Use a valid e mail address The e mail address of the sender the network administrator appears on each e mail alert sent to the destination To include the contact information of the sender in the e mail alert select Include contact information with the alerts and type the
33. If the problem persists contact your Technical Support representative Determine if there is an excessive amount of network traffic to one or more RAID controller modules This problem is self correcting because the EMW software periodically retries to establish communication with the RAID controller modules in the storage array If the storage array was unresponsive and a subsequent try to connect to the storage array succeeds the storage array becomes responsive For an out of band managed storage array determine if management operations are taking place on the storage array from other storage management stations A RAID controller module determined limit exists to the number of Transmission Control Protocol Internet Protocol Troubleshooting Your Storage Array Software 239 23 TCP IP connections that can be made to the RAID controller module before it stops responding to subsequent connection attempts The type of management operations being performed and the number of management sessions taking place together determine the number of TCP IP connections made to a RAID controller module This problem is self correcting because after some TCP IP connections terminate the RAID controller module then becomes responsive to other connection attempts If the storage array is still unresponsive a problem might exists with the RAID controller modules Contact your Technical Support representative Locating a Physical Disk You ca
34. If you remove a fully functioning power supply cooling fan module the fan speed in the remaining module increases significantly to provide adequate cooling The fan speed decreases gradually when a new power supply cooling fan module is installed Turn off the power supply cooling fan module Disconnect the power cable from the power source Remove the Velcro straps that secure the power cable and then disconnect the power cable from the power supply cooling fan module WARNING The power supply cooling fan modules are heavy Use both hands while removing the module Press the release tab and pull the power supply out of the chassis Management Installing Array Components Removing and Installing a Power Supply Cooling Fan Module Figure 16 11 RSs SS SSS Sss power supply 2 release tab 1 3 power supply handle 213 Management Installing Array Components Installing a Power Supply Cooling Fan Module A CAUTION Many repairs may only be done by a certified service technician You should only perform troubleshooting and simple repairs as authorized in your product documentation or as directed by the online or telephone service and support team Damage due to servicing that is not authorized by Dell is not covered by your warranty Read and follow the safety instructions that came with the product 1 Slide the power supply cooling fan module into the chassis until it is fully seated and the release tab cl
35. NOTE The dynamic cache read prefetch setting can be changed later by selecting Virtual Disk gt Change Cache Settings You can change the segment size later by selecting Virtual Disk gt Change Segment Size The I O characteristic types shown below are only presented during the create virtual disk process When you choose one of the virtual disk I O characteristics the corresponding dynamic cache prefetch setting and segment size that are typically well suited for expected I O patterns are populated in the Dynamic cache read prefetch field and the Segment size field To change the I O type 1 Select from these virtual disk I O characteristic types based on your application needs e File system typical e Database e Multimedia e Custom The corresponding dynamic cache read prefetch setting and segment size values that are typically well suited for the selected virtual disk I O characteristic type are populated in the Dynamic cache read prefetch and Segment size fields 112 Configuration Disk Groups and Virtual Disks K NOTE If you selected the Custom option select your preferred dynamic cache read prefetch setting enabled disabled and segment size 8KB to 512KB 2 Click OK Choosing an Appropriate Physical Disk Type You can create disk groups and virtual disks in the storage array You must select the capacity that you want to allocate for the virtual disk from either unconfigured capacity or free cap
36. NVSRAM file information area The attributes indicate the version of the NVSRAM file If you want to download the file and activate the firmware and NVSRAM later select the Transfer files but don t activate them activate later check box K NOTE If any of the selected storage arrays do not support downloading the files and activating the firmware or NVSRAM later the Transfer files but don t activate them activate later check box is disabled Click OK The Confirm Download dialog appears Click Yes The download starts and a progress indicator appears in the Status column of the Upgrade RAID Controller Module Firmware window Downloading Only NVSRAM Firmware You also can use the command line interface CLI to download and activate NVSRAM to several storage arrays For more information see the PowerVault Modular Disk Storage Manager online help topics To download only NVSRAM firmware 1 190 To download the NVSRAM firmware from e EMW Go to step 7 e AMW Go to step 2 Management Firmware Downloads Select Advanced Maintenance Download RAID Controller Module NVSRAM or Select the Support tab and click Download Firmware In Select download task select Download RAID controller module NVSRAM and click OK An error message appears Click OK to close it and select a compatible file To locate the directory in which the file to download resides click Select File Select the file to download
37. OK Configuring Alert Notifications MDSM can send an alert for any condition on the storage array that requires your attention Alerts can be sent as e mail messages or as Simple Network Management Protocol SNMP trap messages You can configure alert notifications either for all the storage arrays or a single storage array To configure alert notifications for all storage arrays 1 Inthe EMW select the Setup tab 2 Select Configure Alerts The Configure Alerts dialog is displayed 3 Select All storage arrays 4 Click OK The Configure Alerts dialog is displayed To configure e mail alerts see Configuring E mail Alerts on page 74 To configure SNMP alerts see Configuring SNMP Alerts on page 77 To configure alert notifications for a single storage array 1 Inthe EMW select the Devices tab 2 Select the relevant storage array then select Edit Configure Alerts The Configure Alerts dialog is displayed To configure e mail alerts see Configuring E mail Alerts on page 74 To configure SNMP alerts see Configuring SNMP Alerts on page 77 Configuring E mail Alerts For more information on configuring alert notifications see Configuring Alert Notifications on page 74 To configure e mail alerts 1 Open the Configure Alerts dialog by performing one of these actions 74 Configuration About Your Storage Array e In the Tree view or the Table view on the Devices tab in the EMW select a node and then select
38. Patterns 28 Hardware Features Back panel features 27 Front panel features 24 Hard drive indicator patterns 28 Power indicator codes 30 Power supply and cooling fan features 29 Host Group Adding 97 Create 96 Moving a Host 97 Removing a host 97 Removing a Host Group 98 Host Topology 98 Host to Virtual Disk Mapping 126 Host to Virtual Disk Mappings Creating 126 Modifying and Removing 128 Removing 129 Hot Spare Drive Protection 123 Global Hot Spares 123 Operation 123 Hot Spares and Rebuild 123 l I O Data Path Protection 100 Inside the box 19 installing backplane 220 control panel MD1200 216 drive blank 200 EMM 208 EMM blank 206 front bezel 198 hard drive 202 hard drives 202 power supply cooling fan module 214 L Load Balancing 55 Locating a Physical Disk 240 Managing Host Groups 96 Managing Host Port Identifiers 101 Index 263 MDSM 20 Media Errors and Unreadable Sectors 196 Media Scan Changing settings 142 Suspending 143 Microsoft Virtual Disk Service 223 Volume Shadow Copy Service 223 Microsoft Services Virtual Disk Copy 52 Monitoring Performance 56 Multi Path Preferred and Alternate Controllers and Paths 54 Multi Path Software 54 Non Exportable Components 139 0 Other Information 20 P phone numbers 259 Physical Disk Security with Self Encrypting Disk 113 Physical Disk States 38 Physical Disks 37 Er
39. Premium Feature Snapshot Virtual Disks 159 K K NOTE If you do not intend to re create the snapshot virtual disk at a later time in the Logical pane select the snapshot virtual disk and select Virtual Disk Delete to remove it The associated snapshot repository virtual disk is also removed Refer to the PowerVault Modular Disk Storage Manager online help topics for more information on removing a snapshot virtual disk NOTE The SMdevices utility displays the snapshot virtual disk in its output even after the snapshot virtual disk is disabled To disable a snapshot virtual disk 1 In the AMW select the Logical tab select the snapshot virtual disk and select Virtual Disk gt Snapshot Disable In the text box type yes and click OK The snapshot virtual disk is disabled The associated snapshot repository virtual disk does not change status The copy on write activity to the snapshot repository virtual disk stops until the snapshot virtual disk is re created Preparing Host Servers to Re create a Snapshot Virtual Disk Es K NOTE Before you create a new snapshot of a source virtual disk stop any data access I O activity or suspend data transfer to the source virtual disk and snapshot virtual disk to ensure that you capture an accurate snapshot of the source virtual disk Close all applications including Windows Internet Explorer to make sure all I O activity has stopped NOTE Removing the dri
40. RAID Controller Module A CAUTION Many repairs may only be done by a certified service technician You should only perform troubleshooting and simple repairs as authorized in your product documentation or as directed by the online or telephone service and support team Damage due to servicing that is not authorized by Dell is not covered by your warranty Read and follow the safety instructions that came with the product Insert the RAID controller module into the RAID controller module bay until it seats into place Push the release lever toward the chassis until it clicks into place Connect all the cables to the RAID controller module If applicable update the firmware for the RAID controller module For information about the latest firmware see the Dell Support website at support dell com Opening the RAID Controller Module A CAUTION Many repairs may only be done by a certified service technician You 208 should only perform troubleshooting and simple repairs as authorized in your product documentation or as directed by the online or telephone service and support team Damage due to servicing that is not authorized by Dell is not covered by your warranty Read and follow the safety instructions that came with the product Turn off the array and host server Disconnect all the power cables connected to the array Remove the RAID controller module See Removing a RAID Controller Module Blank on page 205 Remove the screw
41. SMART monitors the internal performance of all physical disk components to detect faults indicating the potential for physical disk failure SMART uses this information to report whether failure is imminent so that a physical disk can be replaced before failure occurs The RAID controller monitors all attached drives and notifies users when a predicted failure is reported by a physical disk Media Errors and Unreadable Sectors If the RAID controller detects a media error while accessing data from a physical disk that is a member of a disk group with a redundant RAID level RAID 1 RAID 5 or RAID 10 the controller tries to recover the data from peer disks in the disk group and uses recovered data to correct the error If the controller encounters an error while accessing a peer disk it is unable to recover the data and affected sectors are added to the unreadable sector log maintained by the controller Other conditions under which sectors are added to the unreadable sector log include e A media error is encountered when trying to access a physical disk that is a member of a nonredundant disk group RAID 0 or degraded RAID 1 RAID 5 or RAID 10 e An error is encountered on source disks during rebuild K NOTE Data on an unreadable sector is no longer accessible 196 Management Firmware Downloads Management Installing Array Components Recommended Tools You may need the following items to perform the procedures in this se
42. Storage Array Profile Viewing the Logical Associations Viewing the Physical Associations FindingNodes 00 4 Using Go To 0 0000 5 Recovering From an Unresponsive Storage Array Condition Locating a Physical Disk Locating an Expansion Enclosure Capturing the State Information SMrepassist Utility Unidentified Devices Recovering From an Unidentified Storage Array Starting or Restarting the Host Context Agent Software Contents 15 20 Troubleshooting Your Array 249 Safety First For you and YourArray 249 Troubleshooting Storage Array Startup Failure 249 Troubleshooting Loss of Communication 249 Troubleshooting External Connections 249 Troubleshooting Power Supply Cooling FanModule 250 Troubleshooting Array Cooling Problems 251 Troubleshooting Expansion Enclosure Management Modules 251 Troubleshooting RAID Controller Modules 253 Troubleshooting Hard Drives 254 Troubleshooting Array and Expansion Enclosure Connections 255 Troubleshooting a Wet Storage Array 255 Troubleshooting a Damaged Array 256 Troubleshooting RAID Controller Modules 257 Conditions 42362 aes he ea ee RES 257 Invalid Storage A
43. The RAID controller modules remain available during synchronization To synchronize the RAID controller module clocks with the storage management station Configuration About Your Storage Array 79 1 In the AMW select Storage Array Synchronize RAID Controller Module Clocks 2 Ifa password is set in the Enter Password dialog type the current password for the storage array and click Synchronize The RAID controller module clocks are synchronized with the storage management station 80 Configuration About Your Storage Array Configuration Using iSCSI Changing the iSCSI Target Authentication To change the iSCSI target authentication 1 2 In the AMW select the Setup tab Select Manage iSCSI Settings The Manage iSCSI Settings window is displayed and by default the Target Authentication tab is selected To change the authentication settings select e None TIf you do not require initiator authentication If you select the None any initiator can access the target e CHAP To enable an initiator that tries to authenticate the target using Challenge Handshake Authentication Protocol CHAP Define the CHAP secret only if you want to use mutual CHAP authentication If you select CHAP but no CHAP target secret is defined an error message appears See Creating CHAP Secrets on page 82 To enter the CHAP secret click CHAP secret The Enter Target CHAP Secret dialog is displayed Enter the Target CHAP secr
44. all applications including Windows Internet Explorer to make sure all 1 0 activity has stopped NOTE Removing the drive letter of the associated virtual disk s in Windows or unmounting the virtual drive in Linux helps to guarantee a stable copy of the drive for the Snapshot Before creating a snapshot virtual disk the host server has to be in the proper state To ensure that the host server is properly prepared to create a snapshot virtual disk you can either use an application to carry out this task or you can perform the following steps 1 2 3 148 Stop all I O activity to the source In the AMW select the Logical tab and select a valid source virtual disk Select Virtual Disk Snapshot Create Alternatively you can right click the source virtual disk and select Create Snapshot Virtual Disk from the pop up menu The Create Snapshot Virtual Disk Wizard Introduction dialog appears Select Simple Recommended and click Next The Specify Names window is displayed Enter the Snapshot virtual disk name and the Snapshot repository virtual disk name and click Next The Specify Snapshot Repository Capacity window is displayed Configuration Premium Feature Snapshot Virtual Disks 10 11 Es Enter the snapshot repository virtual disks capacity as a percentage of the source virtual disks capacity and click Next The Preview window containing the summary of the snapshot virtual disk is displayed Click Fin
45. and disabling the Read Only attribute for the target virtual disk To prevent write protected error messages from appearing do not try to access a source virtual disk that is participating in a virtual disk copy while the virtual disk copy has a status of In Progress Also make sure that the Read Only attribute for the target virtual disk is disabled after the virtual disk copy has completed to prevent error messages from appearing To copy the virtual disk 1 Stop all I O activity to the source virtual disk and the target virtual disk 2 Unmount any file systems on the source virtual disk and the target virtual disk In the AMW select the Logical tab and select the source virtual disk 4 Select Virtual Disk Copy gt Create The Create Copy Wizard Introduction window is displayed Configuration Premium Feature Virtual Disk Copy 169 5 Inthe Select source virtual disk are select the appropriate virtual disk and click Next The Select Target Virtual Disk and Copy Priority window is displayed 6 Inthe Select target virtual disk area select the appropriate virtual disk In the Select copy priority area select the relevant copy priority and click Next The Preview window displays the summary of your selections 8 Type yes and click Finish K NOTE Operation in Progress icons appear on the source virtual disk and the target virtual disk while the virtual disk copy has a status of In Progress or Pending For more in
46. and wait for 30 seconds See Installing a RAID Controller Module on page 208 f Check the RAID controller module status LED g Replace the RAID controller module h Turm on the host server If the problem is not resolved see Getting Help on page 259 e If the link status LEDs are not green see Troubleshooting Array and Expansion Enclosure Connections on page 255 a Turn off the server storage array and expansion enclosures b Reseat the RAID controller module and reconnect cables on the storage array and the server c Restart the storage array and wait until array is fully booted d Turn on the server Troubleshooting Your Array 253 e Check the link status LED If the link status LED is not green replace the cables If the problem is not resolved see Getting Help on page 259 Troubleshooting Hard Drives A CAUTION Many repairs may only be done by a certified service technician 254 You should only perform troubleshooting and simple repairs as authorized in your product documentation or as directed by the online or telephone service and support team Damage due to servicing that is not authorized by Dell is not covered by your warranty Read and follow the safety instructions that came with the product Remove the hard drive from the system See Removing a Hard Drive on page 200 K NOTE You must ensure that you check the hard drive indicators before removing the faulty hard drive from the s
47. appropriate directory Planning MD3200i Series Storage Array Terms and Concepts 57 10 Type a file name in the File name text box K NOTE The perf extension is the default 11 Select a file type from the Files of type list e Use the Report format ASCII text file type if you want to save the data to a report form for viewing or printing e Use the Comma Delimited Format file type if you want to save the data in a form that can be imported into a commercial spreadsheet application for further analysis Most leading commercial spreadsheet applications recognize a comma delimiter These applications use the delimiter to import the data into spreadsheet cells 12 Click Save The Performance Monitor data provides information about how your storage array is performing The data is presented in eight columns which are described in this table Use this data to make performance tuning decisions for your storage array Table 4 3 Performance Monitor Table Description Column Headings Description Devices Controller virtual disk or storage array total Total IOs Cumulative IO s per second from last start time Read Percentage Percentage of cumulative IO s that are READs Cache Hit Percentage Percentage of cumulative 1O s that are in cache Current KB second Snapshot of throughput value per second 1KB 1024 bytes Maximum KB second Maximum recorded throughput value from last start time Current IO second Snapshot o
48. array The failover alert delay lets you delay the logging of a critical event if the multi path driver transfers virtual disks to the non preferred controller If the multi path driver transfers the virtual disks back to the preferred controller within the specified delay period a critical event is not logged If the transfer exceeds this delay period then a virtual disk not on preferred path alert is issued as a critical event You can also use this option to minimize multiple alerts when more than one virtual disk fails over because of a system error such as a failed host adapter For more information see the PowerVault Modular Disk Storage Manager online help topics Changing the Cache Settings on the Storage Array To change the storage array cache settings 1 In the AMW select Storage Array Change Cache Settings The Change Cache Settings window is displayed 72 Configuration About Your Storage Array 2 Select or enter the percentage of unwritten data in the cache to trigger a cache flush in Start flushing 3 Select or enter the percentage of unwritten data in the cache to stop a cache flush in progress in Stop flushing 4 Select the appropriate Cache block size A smaller cache size is a good choice for file system use or database application use A larger cache size is a good choice for applications that generate sequential I O such as multimedia 5 In the Enter Password dialog type the current password for the storage
49. array does not affect the storage array or its data in any way Removing a storage array simply removes it from the list of storage arrays that appear in the drop down list in the Array Selector If a storage array is accidentally removed it can be added again See Adding Storage Arrays on page 64 You can remove the storage array only from the EMW To remove the storage array 1 In the EMW select the Devices tab and select the relevant managed storage array 2 Select Edit Remove Storage Array A message prompts you for a confirmation for the removal of the selected storage array 3 To remove the storage array click Yes Configuration About Your Storage Array 71 Enabling Premium Features You can enable premium features on the storage array To enable the premium features you must obtain a feature key file specific to the premium feature that you want to enable from your storage supplier To enable premium features 1 From the toolbar in AMW select Storage Array Premium Features The Premium Features and Feature Pack Information window is displayed 2 Select the relevant premium feature and click Enable The Select Feature Key File dialog is displayed 3 Navigate to the relevant folder select the appropriate key file and click OK 4 Click Close For more information see the PowerVault Modular Disk Storage Manager online help topics Failover Alert Display You can change the failover alert delay for a storage
50. contact information K NOTE Including the contact information in the e mail alert is optional Select the E mail tab to configure the e mail destinations e Adding an e mail address In Email address type the e mail address and click Add Configuration About Your Storage Array 75 e Replacing an e mail address In the Configured email addresses area select the e mail address to be replaced type the replacement e mail address in Email address and click Replace e Deleting an e mail address In the Configured email addresses area select the e mail address and click Delete e Validating an e mail address Type the e mail address in Email address or select the e mail address in the Configured email addresses area and click Test A test e mail is sent to the selected e mail address A dialog with the results of the test and any error appears 8 For the selected e mail address in Information To Send select Event Only The alert e mail contains only the event information This alert type is the default e Event Profile The alert e mail contains the event information and the storage array profile e Event Support tThe alert e mail contains the event information and a compressed file that contains complete support information for the storage array that has generated the alert 9 For the selected e mail address in Frequency select Every event Sends an alert e mail whenever an event occurs This is
51. contain information for a particular storage array the firmware inventory service is not available on that storage array You can also save the firmware inventory to a text file You can then send the file to your Technical Support representative for analysis Your Technical Support representative can detect any firmware mismatches Viewing the Firmware Inventory To view the firmware inventory 1 Perform one of these actions based on whether you want to view the firmware information for one storage array or all storage arrays e One storage array From the Array Management Window select Advanced Maintenance Firmware Inventory e All storage arrays From the Enterprise Management Window select Tools Firmware Inventory 2 To save the firmware inventory to a text file Click Save As 3 In Specify filename enter a name for the file to be saved You might also specify another physical disk and directory if you want to save the file in a location other than the default K NOTE The suffix txt is added to the file name automatically if you do not specify a suffix for the file name 4 Click Save An ASCII text file that contains the firmware inventory is saved to the designated directory Management Firmware Inventory 221 222 Management Firmware Inventory Management System Interfaces Microsoft Services Virtual Disk Service The Microsoft Virtual Disk Service VDS is a component of the Windows
52. cycle time for a media verification operation between 1 and 30 days The storage controller throttles the media verification I O accesses to disks based on the cycle time The storage array tracks the cycle for each disk group independent of other disk groups on the controller and creates a checkpoint If the media verification operation on a disk group is preempted or blocked by another operation on the disk group the storage array resumes after the current cycle If the media verification process on a disk group is stopped due to a RAID controller module restart the storage array resumes the process from the last checkpoint Virtual Disk Operations Limit The maximum number of active concurrent virtual disk processes per RAID controller module installed in the storage array is four This limit is applied to the following virtual disk processes e Background initialization 44 Planning MD3200i Series Storage Array Terms and Concepts e Foreground initialization e Consistency check e Rebuild e Copy back If a redundant RAID controller module fails with existing virtual disk processes the processes on the failed controller are transferred to the peer controller A transferred process is placed in a suspended state if there are four active processes on the peer controller The suspended processes are resumed on the peer controller when the number of active processes falls below four Disk Group Operations RAID Level Migration
53. data report 1 Inthe AMW perform one of these actions e Select Advanced Troubleshooting gt Support Data gt Collect e Select the Support tab and click Gather Support Information The Collect All Support Data window is displayed 2 Enter a name for the support data file in Specify filename or click Browse to navigate to a previously saved file to overwrite an existing file The suffix zip is added automatically to the file if you do not specify a suffix for the file Enter the Execution summary Click Start After all of the support files have been gathered they are archived using the file name that you specified 5 Click OK Automatically Collect the Support Bundle Data You can use the Collect Support Bundle option to automatically save a copy of the support bundle when the client monitor process detects a critical event During a critical event the support bundle is saved to the local physical disk of the client system in the same area that is used for other recovery information This information is not overwritten for at least 72 hours Troubleshooting Your Storage Array Software 229 A WARNING Use this option only under the guidance of your Technical Support representative To automatically collect the support bundle data 1 In the AMW select Advanced Troubleshooting Support Data gt Automatic Settings Select Automatically collect support data for critical events To change the location of the saved
54. e If hosts are mapped to the source virtual disk the data that is copied to the target virtual disk when you perform the re copy operation might have changed since the previous virtual disk copy was created e Select only one virtual disk copy in the Copy Manager dialog To recopy the virtual disk 1 Stop all I O to the source virtual disk and the target virtual disk 2 Unmount any file systems on the source virtual disk and the target virtual disk 3 In the AMW select Virtual Disk Copy Copy Manager The Copy Manager window is displayed Select the copy pair in the table 5 Select Copy Re Copy The Re Copy window is displayed 6 Set the copy priority Configuration Premium Feature Virtual Disk Copy 173 K NOTE There are five copy priority rates available lowest low medium high and highest If the copy priority is set at the lowest rate I O activity is prioritized and the virtual disk copy takes longer If the copy priority is set to the highest priority rate the virtual disk copy is prioritized but I O activity for the storage array might be affected Removing Copy Pairs You can remove one or more virtual disk copies by using the Copy Manager Any virtual disk copy related information for the source virtual disk and the target virtual disk is removed from the Virtual Disk Properties dialog and the Storage Array Profile dialogs When you remove a virtual disk copy from the storage array the Read Only attribute for
55. error from the source virtual disk e A write error to the target virtual disk e A failure in the storage array that affects the source virtual disk or the target virtual disk When the virtual disk copy fails a critical event is logged in the Event Log and a Needs Attention icon appears in the Array Management Window While a virtual disk copy has this status the host has read only access to the source virtual disk Read requests from and write requests to the target virtual disk do not take place until the failure is corrected by using the Recovery Guru Preferred RAID Controller Module Ownership During a virtual disk copy the same RAID controller module must own both the source virtual disk and the target virtual disk If both virtual disks do not have the same preferred RAID controller module when the virtual disk copy starts the ownership of the target virtual disk is automatically transferred to the preferred RAID controller module of the source virtual disk When the virtual disk copy is completed or is stopped ownership of the target virtual disk is restored to its preferred RAID controller module If ownership of the source virtual disk is changed during the virtual disk copy ownership of the target virtual disk is also changed Failed RAID Controller Module You must manually change RAID controller module ownership to the alternate RAID controller module to allow the virtual disk copy to complete under all of these conditions
56. establishes communication with each managed storage array and determines the current storage array status The current status is represented by icons next to the managed storage array The status icons shown in the Tree view in the EMW represent a summary status for each storage array If a storage array has a status of Needs Attention or a status of Fixing you must determine the condition that is causing this status before attempting any management actions You can determine the condition causing the Needs Attention status or the Fixing status by selecting the storage array and launching its Array Management Window AMW To launch the AMW perform one of these actions Troubleshooting Your Storage Array Software 225 e On the Devices tab in either the Tree view or the Table view double click a storage array Alternatively you can right click a storage array and select Manage Storage Array from the pop up menu e On the Setup tab select Manage a Storage Array After the AMW opens select the Physical tab to see the components in the storage array A component that has a problem is indicated by a status icon The status icons indicate the status of the components that comprise the storage array Also the Recovery Guru option provides a detailed explanation of the conditions and the applicable steps to remedy any Needs Attention status For more information see Recovery Guru on page 232 For the status of a storage array the icon
57. for the new virtual disk A disk group has a set amount of free capacity that is configured when the disk group is created You can use that free capacity to subdivide the disk group into one or more virtual disks You can create disk groups and virtual disks using e Automatic configuration Provides the fastest method but with limited configuration options e Manual configuration Provides more configuration options When creating a virtual disk consider the uses for that virtual disk and select an appropriate capacity for those uses For example if a disk group has a virtual disk that stores multimedia files which tend to be large and another virtual disk that stores text files which tend to be small the multimedia file virtual disk requires more capacity than the text file virtual disk Configuration Disk Groups and Virtual Disks 103 A disk group should be organized according to its related tasks and subtasks For example if you create a disk group for the Accounting Department you can create virtual disks that match the different types of accounting performed in the department Accounts Receivable AR Accounts Payable AP internal billing and so forth In this scenario the AR and AP virtual disks probably need more capacity than the internal billing virtual disk K NOTE In Linux the host must be rebooted after deleting virtual disks to reset the dev entries K NOTE Before you can use a virtual disk you
58. group must be running the same operating system e Host type The operating system running on the host server Snapshot Virtual Disks A snapshot is a point in time image of a virtual disk The snapshot provides an image of the virtual disk at the time the snapshot was created You create a snapshot so that an application for example a backup application can access the snapshot and read the data while the source virtual disk remains online and user accessible When the backup is completed the snapshot virtual disk is no longer needed You can create up to four snapshots per virtual disk Snapshots are used to recover previous versions of files that have changed since the snapshot was taken Snapshots are implemented using a copy on write algorithm which makes a backup copy of data the instant an error occurs Data on a virtual disk is copied to the snapshot repository before it is modified Snapshots are instantaneous and take up less overhead than a full physical copy process Planning MD3200i Series Storage Array Terms and Concepts 51 Snapshot Repository Virtual Disk When you create a snapshot virtual disk it automatically creates a snapshot repository virtual disk A snapshot repository is a virtual disk created in the storage array as a resource for a snapshot virtual disk A snapshot repository virtual disk contains snapshot virtual disk metadata and copy on write data for a particular snapshot virtual disk The repository s
59. level the event is logged in the Major Event Log MEL The default snapshot repository full percentage level is 50 of the source virtual disk Snapshot Repository Virtual Disk Full Conditions Choose whether to fail writes to the source virtual disk or fail the snapshot virtual disk when the snapshot repository virtual disk becomes full Host to Virtual Disk Mapping Choose whether to map the snapshot virtual disk to a host or host group now or to map the snapshot virtual disk later The default setting is Map later Configuration Premium Feature Snapshot Virtual Disks Preparing Host Servers to Create the Snapshot Using the Advanced Path K NOTE Before using the Snapshot Virtual Disks Premium Feature in a Microsoft Windows clustered configuration you must first map the snapshot virtual disk to the cluster node that owns the source virtual disk This ensures that the cluster nodes correctly recognize the snapshot virtual disk K NOTE Mapping the snapshot virtual disk to the node that does not own the source virtual disk before the Snapshot enabling process is completed can result in the operating system mis identifying the snapshot virtual disk This in turn can result in data loss on the source virtual disk or an inaccessible snapshot K NOTE For details on mapping the snapshot virtual disk to the secondary node refer to the Dell PowerVault M D3200i and M D3220i Storage Arrays W ith Microsoft Windows Server
60. load across many physical disks Although it offers the best performance of any RAID level RAID 0 lacks data redundancy Choose this option only for non critical data because failure of one physical disk results in the loss of all data Examples of RAID 0 applications include video editing image editing prepress applications or any application requiring high bandwidth RAID 1 RAID 1 uses disk mirroring so that data written to one physical disk is simultaneously written to another physical disk This RAID level offers fast performance and the best data availability but also the highest disk overhead Planning MD3200i Series Storage Array Terms and Concepts 41 RAID 1 is recommended for small databases or other applications that do not require large capacity for example accounting payroll or financial applications RAID 1 provides full data redundancy RAID 5 RAID 5 uses parity and striping data across all physical disks distributed parity to provide high data throughput and data redundancy especially for small random access RAID 5 is a versatile RAID level and is suited for multi user environments where typical I O size is small and there is a high proportion of read activity such as file application database web e mail news and intranet servers RAID 6 RAID 6 is similar to RAID 5 but provides an additional parity disk for better redundancy RAID 6 is the most versatile RAID level and is suited for multi user envir
61. of the following occurs e More than one fan has failed e Any backplane temperature sensors in the critical range e Backplane power supply failure e Two or more temperature sensors are unreadable e Failure to detect or unable to communicate with peer port K NOTE If both RAID controller modules fail simultaneously the array cannot issue critical or noncritical event alarms for any array component When the array is under critical condition its array status LED blinks amber Noncritical Conditions A noncritical condition is an event or status that does not cause immediate failure but must be corrected to ensure continued reliability of the storage array Examples of noncritical events include the following e One power supply has failed e One cooling fan has failed e One RAID controller module in a redundant configuration has failed e A battery has failed or has been removed e A physical disk in a redundant virtual disk has failed When the array is under noncritical condition its array status LED blinks amber 258 Troubleshooting Your Array Getting Help Contacting Dell For customers in the United States call 800 WWW DELL 800 999 3355 K NOTE If you do not have an active Internet connection you can find contact information on your purchase invoice packing slip bill or Dell product catalog Dell provides several online and telephone based support and service options Availability varies by country
62. physical disk must match the security capability of the disk group For example a non security capable physical disk cannot be used as a hot spare for a secure disk group K NOTE For a security capable disk group security capable hot spare physical disks are preferred If security capable physical disks are not available non security capable physical disks may be used as hot spare physical disks To ensure that the disk group is retained as security capable the non security capable hot spare physical disk must be replaced with a security capable physical disk If you select a security capable physical disk as hot spare for a non secure disk group a dialog box appears indicating that a security capable physical disk is being used as a hot spare for a non secure disk group The availability of enclosure loss protection for a disk group depends on the location of the physical disks that comprise the disk group The enclosure loss protection might be lost because of a failed physical disk and location of the hot spare physical disk To make sure that enclosure loss protection is not affected you must replace a failed physical disk to initiate the copyback process The virtual disk remains online and accessible while you are replacing the failed physical disk because the hot spare physical disk is automatically substituted for the failed physical disk Enclosure Loss Protection Enclosure loss protection is an attribute of a disk group E
63. products Dell Inc disclaims any proprietary interest in trademarks and trade names other than its own Regulatory Model E03J Series and E04J Series Regulatory Type E03J001 and E04J001 May 2010 Rev A00 Contents 1 Introduction oaaae aaa aaa 19 About ThisDocument 19 Inside the box of the Dell PowerVault MD3200i Series Storage Array naaa aaa aaa 19 Dell PowerVault MD3200i Series Storage Array onana aaa aaa 20 Dell PowerVault Modular Disk Storage Manager aaa ante a wat abe E aiiu Ea 20 Dell PowerVault Modular Disk Configuration Utility 20 Other Information YouMayNeed 20 2 Planning About Your Storage Array 23 Overview ss 22 eek te bo aoe eed 23 Hardware Features 24 Front Panel Features and Indicators 24 Back Panel Features and Indicators 27 Hard Drive Indicator Patterns 28 Power Supply and Cooling Fan Features 29 Power Indicator Codes 30 Contents 3 Planning RAID Controller Modules RAID Controller Modules RAID Controller Module Connectors and Features RAID Controller Module Additional Features Battery Backup Unit Storage Array Thermal Shutdown System Password Reset Cache Functions and Features Cache Mirroring Write Back Cache Write Through Cache
64. removed safely For more information see your controller documentation for information about hot swap drive removal If the drive has been online the green activity fault indicator flashes as the drive is powered down When the drive indicators are off the drive is ready for removal 3 Press the release button to open the drive carrier release handle See Figure 16 4 4 Slide the hard drive out until it is free of the drive bay A CAUTION To maintain proper system cooling all empty hard drive bays must have drive blanks installed 5 Insert a drive blank in the empty drive bay See Installing a Drive Blank on page 200 6 If applicable replace the front bezel See Installing the Front Bezel on page 198 Figure 16 4 Removing and Installing a Hard Drive 1 release button 2 hard drive carrier handle Management Installing Array Components 201 Installing a Hard Drive A A A CAUTION Many repairs may only be done by a certified service technician You should only perform troubleshooting and simple repairs as authorized in your product documentation or as directed by the online or telephone service and support team Damage due to servicing that is not authorized by Dell is not covered by your warranty Read and follow the safety instructions that came with the product CAUTION Use only hard drives that have been tested and approved for use with the MD3200i series CAUTION When installing a hard drive ensu
65. request The storage array rejects the write request and the read request might not be issued due to the rejected write request This condition might result in an error message appearing which indicates that the source virtual disk is write protected To prevent this issue from occurring do not attempt to access a source virtual disk that is participating in a virtual disk copy while the virtual disk copy has a status of In Progress Also make sure that the Read Only attribute for the target virtual disk is disabled after the virtual disk copy has completed to prevent error messages from appearing The Virtual Disk Copy premium feature includes these items 166 Configuration Premium Feature Virtual Disk Copy The Create Copy Wizard which assists in creating a virtual disk copy e The Copy Manager which monitors virtual disk copies after they have been created Before you Begin A virtual disk copy fails all snapshot virtual disks that are associated with the target virtual disk if any exist If you select a source virtual disk of a snapshot virtual disk you must disable all of the snapshot virtual disks that are associated with the source virtual disk before you can select it as a target virtual disk Otherwise the source virtual disk cannot be used as a target virtual disk A virtual disk copy overwrites data on the target virtual disk and automatically makes the target virtual disk read only to hosts If eight virtual dis
66. send an alert notification about events that occur in only a specified storage array These results occur depending on your selection e If you selected All storage arrays the Configure Alerts dialog appears e If you selected An individual storage array the Select Storage Array dialog appears Select the storage array for which you want to receive alert notifications and click OK The Configure Alerts dialog appears K NOTE If you do not know which storage array to select click Blink to turn on the LEDs of the storage array 3 Select the SNMP tab to configure the SNMP alert destinations e Adding an SNMP address In Community name type the community name In Trap destination type the trap destination and click Add K NOTE The community name is an American Standard Code for Information Interchange ASCII string that identifies a known set of network management stations and is set by the network administrator The default community name is the string public The trap destination is the IP address or the host name of a computer running an SNMP management application An example of a SNMP enabled management application is the Dell Management Console Please see dell com for more information on the Dell Management Console Configuration About Your Storage Array 77 e Replacing an SNMP address Select the SNMP address in the Configured SNMP addresses area type the replacement community name in Community name and
67. several minutes for MDSM to connect to the specified storage array To add a storage array manually 1 Select Edit Add Storage Array 2 Select the relevant management method e Out of band management Fnter a host name or an IP address for the RAID controller Modules in the storage array In band management Enter a name or an IP address for the Host through which the storage array is attached to the network Configuration About Your Storage Array 65 K NOTE When adding a storage array using in band management with iSCSI a session must first be established between the initiator on the host server and the storage array For more information see Configuration Using iSCSI on page 81 K NOTE The host agent must be restarted before in band management communication can be established See Starting or Restarting the Host Context Agent Software on page 246 3 Click Add 4 Use one of these methods to name a storage array e Inthe EMW select the Setup tab and select Name Rename Storage Arrays e Inthe AMW select the Setup tab and select Rename Storage Array e Inthe EMW right click the icon corresponding to the array and select Rename Setting Up Your Storage Array A list of initial setup tasks is displayed on the Setup tab in the AMW The list of initial setup tasks shows you how to set up a storage array Using the steps outlined in the Initial Setup Tasks Area ensures that the basic setup steps are co
68. statistics Baseline statistics are point in time statistics that have been gathered since you set the baseline time After you select the statistics type and either raw or baseline statistics the details of the statistics appear in the statistics tables K NOTE You can click Save As to save the statistics that you are viewing in a text file 4 To set the baseline for the statistics a Select Baseline statistics b Click Set Baseline c Confirm that you want to set the baseline statistics in the dialog that appears The baseline time shows the latest time you set the baseline The sampling interval is the difference in time from when you set the baseline until you launch the dialog or click Refresh K NOTE You must first set a baseline before you can compare baseline statistics Configuration Using iSCSI 89 Edit Remove or Rename Host Topology If you give access to the wrong host or the wrong host group you can remove or edit the host topology To correct the host topology Table 7 3 Host Topology Actions Desired Action Steps to Complete Action Move a host 1 Click the Mappings tab Move a host group 2 Select the Host that you want to move and then click Mappings gt Move 3 Select a host group to move the host to and click OK Manually delete the 1 Click the Mappings tab host the host group 2 Select the item that you want to remove and select Mappings Remove Rename the host the 1 Cli
69. support bundle click Change The Change Folder Location window is displayed navigate to the relevant folder and click OK 4 To reset the default location click Reset 5 Click OK Collecting the Physical Disk Data You can use the Collect Physical Disk Data option to collect log sense data from all the physical disks on your storage array Log sense data consists of statistical information that is maintained by each of the physical disks in your storage array Your Technical Support representative can use this information to analyze the performance of your physical disks and for troubleshooting problems that might exist A WARNING Use this option only under the guidance of your Technical Support representative To collect physical disk data 1 Inthe AMW select Advanced Troubleshooting Collect Physical Disk Data The Collect Physical Disk Data window is displayed 2 Enter a name for the physical disk data filename in Specify filename or click Browse to navigate to a previously saved file to overwrite an existing file The suffix bin is added to the file automatically if you do not specify a suffix for the file 3 Click Start 230 Troubleshooting Your Storage Array Software The physical disk data collection is completed and saved at the location that you entered 4 Click OK Event Log You can use the Event Log Viewer to view a detailed list of events that occur in a storage array The event log
70. target virtual disk to copy back to the source virtual disk of a disabled or failed snapshot virtual disk If you decide not to preserve the data on the target virtual disk after the virtual disk copy is complete change the write protection setting for the target virtual disk to Read Write To set the target virtual disk read write permissions 1 In the AMW select Virtual Disk Copy Copy Manager The Copy Manager window is displayed Select one or more copy pairs in the table Perform one of these actions e Toenable Read Only permission select Change Target Virtual Disk Permissions Enable Read Only K NOTE Write requests to the target virtual disk are rejected when the Read Only permission is enabled on the target virtual disk e To disable Read Only permission select Change Target Virtual Disk Permissions Disable Read Only Virtual Disk Copy Restrictions Before you perform any virtual disk copy tasks understand and adhere to the restrictions listed in this section The restrictions apply to the source virtual disk the target virtual disk and the storage array e While a virtual disk copy has a status of In Progress Pending or Failed the source virtual disk is available for read I O activity only After the virtual disk copy is complete read and write I O activity to the source virtual disk are permitted Configuration Premium Feature Virtual Disk Copy 165 K A virtual disk can be selected as a target virtu
71. the updates first because they often supersede information in other documents Introduction 21 22 Introduction Planning About Your Storage Array Overview The MD3200i Series storage array is designed for high availability offering redundant access to data storage It features support for both single and dual RAID controller configuration The Dell PowerVault MD3200i storage array provides 1 0 Gbps 1000 BaseT connectivity to the host server and enables access to 32 physical hosts The MD3200i Series storage array includes RAID controller module s PSU Fan modules Disk drives also called physical disk drives in this document An optional front panel bezel A system enclosure into which the other components are plugged Planning About Your Storage Array 23 Hardware Features Front Panel Features and Indicators Figure 2 1 Front Panel Features and Indicators Dell PowerVault MD3200i 24 Planning About Your Storage Array Figure 2 3 Front Bezel Features and Indicators Item Indicator Button or Icon Connector Description l 2 Enclosure status LED Power LED O The enclosure status LED lights when the enclosure power is on Lights blue during normal operation Blinks blue when a host server is identifying the enclosure or when the system identification button is pressed Lights amber as enclosure b
72. the backup battery unit with the slots on the RAID controller module 2 Slide the backup battery unit toward the connector on the RAID controller module 3 Tighten the screw that secures the backup battery unit to the RAID controller module 4 Close the RAID controller module See Closing the RAID Controller Module on page 209 5 Replace the RAID controller module See Installing a RAID Controller Module on page 208 6 Connect all the cables to the array Turn on the array and the host server Power Supply Cooling Fan Module The array supports two hot swappable power supply cooling fan modules While the array can operate temporarily with one module both the modules must be present for proper system cooling VAN CAUTION A single power supply cooling fan module can be removed from a powered on array for a maximum period of five minutes Beyond that time the array may automatically shut down to prevent damage Removing a Power Supply Cooling Fan Module A CAUTION Many repairs may only be done by a certified service technician You should only perform troubleshooting and simple repairs as authorized in your product documentation or as directed by the online or telephone service and Management Installing Array Components 211 A 4 212 support team Damage due to servicing that is not authorized by Dell is not covered by your warranty Read and follow the safety instructions that came with the product NOTE
73. these steps In the following command descriptions lt x gt is used to indicare where a substitution should be made On Red Hat Enterprise Linux systems lt x gt is the number assigned to the device On SUSE Linux Enterprise Server systems lt x gt is the letter s assigned to the device Scan for newly added Virtual Disks The rescan_dm_devs command scans the host server system looking for existing and newly added virtual disks mapped to the host server rescan_ dm devs If an array virtual disk VD is mapped to the host server at a later time the rescan dm devices command must be run again to make the VD a visible LUN to the operating system Configuration Device Mapper Multipath for Linux 179 Display the multipath device topology using the multipath command The multipath command adds newly scanned and mapped virtual disks to the Device Mapper tables and creates entries for them in the dev mapper directory on the host server These devices are the same as any other block devices in the host To list all the multipath devices run the following command multipath 11 The output should be similar to this example which shows the output for one mapped virtual disk mpathl 3600a0b80005ab177000017544a8d6b92 dm 0 DELL MD32xxi size 5 0G features 3 queue if no path pg_init retries 50 hwhandler 1 rdac rw _ round robin 0 prio 6 active ko eo OOe 0 sde 8 32 active ready _ round robin 0 pri
74. to another storage array A pass phrase that you provide is used to encrypt and decrypt the security key for storage on other media When you create a security key you also provide information to create a security key identifier Unlike the security key you can read or view the security key identifier The security key identifier is also stored on a physical disk or transportable media The security key identifier is used to identify which key the storage array is using To create a security key 1 In the AMW toolbar select Storage Array Physical Disk Security gt Create Security Key The Create Security Key window is displayed 2 Entera string that becomes part of the secure key identifier in Security key identifier You can enter up to 189 alphanumeric characters without spaces punctuation or symbols Additional characters are generated automatically and is appended to the end of the string that you enter The generated characters help to ensure that the secure key identifier is unique 3 Edit the default path by adding a file name to the end of the path or Click Browse navigate to the required folder and enter the name of the file 4 Enter a string for the pass phrase in Pass phrase The pass phrase must e be between eight and 32 characters long e contain at least one uppercase letter e contain at least one lowercase letter e contain at least one number e contain at least one non alphanumeric character for example
75. to correct the problem before you try to unassign the physical disk You cannot assign a hot spare physical disk if it is in use taking over for a failed physical disk To assign or unassign hot spare physical disks 1 2 3 In the AMW select the Physical tab Select one or more physical disks Perform one of these actions e Select Physical disk Hot Spare Coverage Configuration Disk Groups and Virtual Disks 121 10 11 12 122 e Right click the physical disk and select Hot Spare Coverage from the pop up menu The Hot Spare Physical Disk Options window is displayed Select the appropriate option you can select e View change current hot spare coverage to review hot spare coverage and to assign or unassign hot spare physical disks if necessary See step 5 e Automatically assign physical disks to create hot spare physical disks automatically for the best hot spare coverage using available physical disks e Manually assign individual physical disks to create hot spare physical disks out of the selected physical disks on the Physical tab e Manually unassign individual physical disks to unassign the selected hot spare physical disks on the Physical tab See step 12 To assign hot spares in the Hot Spare Coverage window select a disk group in the Hot spare coverage area Review the information about the hot spare coverage in the Details area Click Assign The Assign Hot Spare window is displayed
76. usage at different times of day Load Balancing A load balance policy is used to determine which path is used to process I O Multiple options for setting the load balance policies lets you optimize I O performance when mixed host interfaces are configured You can choose one of these load balance policies to optimize I O performance Round robin with subset The round robin with subset I O load balance policy routes I O requests in rotation to each available data path to the RAID controller module that owns the virtual disks This policy treats all Planning MD3200i Series Storage Array Terms and Concepts 55 paths to the RAID controller module that owns the virtual disk equally for I O activity Paths to the secondary RAID controller module are ignored until ownership changes The basic assumption for the round robin policy is that the data paths are equal With mixed host support the data paths might have different bandwidths or different data transfer speeds e Least queue depth with subset The least queue depth with subset policy is also known as the least I Os or least requests policy This policy routes the next I O request to a data path that has the least outstanding I O requests queued For this policy an I O request is simply a command in the queue The type of command or the number of blocks that are associated with the command are not considered The least queue depth with subset policy treats large block requests an
77. view in the Current sessions area The details are shown below in the Details area You can click Save As to save the entire iSCSI sessions topology as a text file 3 To end the session a Select the session that you want to end and then click End Session The End Session confirmation window is displayed b Type yes to confirm that you want to end the iSCSI session c Click OK K NOTE If you end a session any corresponding connections terminate the link between the host and the storage array and the data on the storage array is no longer available K NOTE When a session is manually terminated using the MDSM the iSCSI initiator software automatically attempts to re establish the terminated connection to the storage array This may cause an error message 88 Configuration Using iSCSI Viewing iSCSI Statistics and Setting Baseline Statistics To view iSCSI statistics and set baseline statistics 1 In the AMW toolbar select Storage Array iSCSI Statistics The View iSCSI Statistics window is displayed 2 Select the iSCSI statistic type you want to view in the iSCSI Statistics Type area You can select Ethernet MAC statistics Ethernet TCP IP statistics e Target protocol statistics 3 In the Options area select e Raw statistics To view the raw statistics Raw statistics are all the statistics that have been gathered since the RAID controller modules were started e Baseline statistics To view the baseline
78. virtual disk to the same host Creating a Virtual Disk Copy for an MSCS Shared Disk To create a virtual disk copy for a Microsoft Cluster Server MSCS shared disk create a snapshot of the virtual disk and then use the snapshot virtual disk as the source for the virtual disk copy K K 164 NOTE An attempt to directly create a virtual disk copy for an MSCS shared disk rather than using a snapshot virtual disk fails with the following error The operation cannot complete because the selected virtual disk is not a source virtual disk candidate NOTE When creating a snapshot virtual disk map the snapshot virtual disk to only one node in the cluster Mapping the snapshot virtual disk to the host group or both nodes in the cluster may cause data corruption by allowing both nodes to concurrently access data Configuration Premium Feature Virtual Disk Copy Virtual Disk Read Write Permissions After the virtual disk copy is complete the target virtual disk automatically becomes read only to the hosts The target virtual disk rejects read and write requests while the virtual disk copy operation has a status of Pending or In Progress or if the operation fails before completing the copy Keep the target virtual disk Read Only enabled if you want to preserve the data on the target virtual disk for reasons such as the following e If you are using the target virtual disk for backup purposes e If you are using the data on the
79. you can 62 Provide storage array options for example renaming a storage array changing a password or enabling a background media scan Provide the ability to configure virtual disks from the storage array capacity define hosts and host groups and grant host or host group access to sets of virtual disks called storage partitions Monitor the health of storage array components and report detailed status using applicable icons Provide applicable recovery procedures for a failed logical component or a failed hardware component Present a view of the Event Log for the storage array Present profile information about hardware components such as RAID controller modules and physical disks Provide RAID controller module management options such as changing ownership of virtual disks or placing a RAID controller module online or offline Provide physical disk management options such as assignment of hot spares and locating the physical disk Monitor storage array performance Configuration Overview Configuration About Your Storage Array Out of Band and In Band Management You can manage a storage array in two ways e Out of band management In band management Out of Band Management Using the out of band management method data is separate from commands and events Data travels through the host to controller interface while commands and events travel through the management port Ethernet cables This ma
80. 3 Type up to 30 character name of the disk group in Disk group name Select the appropriate Physical Disk selection choices you can select e Automatic see step 6 e Manual see step 9 Click Next For Automatic configuration The RAID Level and Capacity window is displayed Select the appropriate RAID level in Select RAID level You can select RAID levels 0 1 10 6 and 5 Depending on your RAID level selection the physical disks available for the selected RAID level is displayed in Select capacity table In the Select Capacity table select the relevant disk group capacity and click Finish For Manual configuration The Manual Physical Disk Selection window is displayed Select the appropriate RAID level in Select RAID level You can select RAID levels 0 1 10 6 and 5 Depending on your RAID level selection the physical disks available for the selected RAID level is displayed in Unselected physical disks table In the Unselected physical disks table select the appropriate physical disks and click Add K NOTE You can select multiple physical disks at the same time by holding lt Ctrl gt or lt Shift gt and selecting additional physical disks To view the capacity of the new disk group click Calculate Capacity Click Finish A message prompts you that the disk group is successfully created and that you should create at least one virtual disk before you can use the capacity of the new disk group For more informat
81. 3 Physical disk rebuild aborted seconds amber 3 seconds and off 3 seconds Power Supply and Cooling Fan Features The MD3200i Series storage array includes two integrated hot swappable power supply cooling fan modules Both modules must be installed to ensure proper cooling Each module contains two separate cooling fans The system requires at least one of the cooling fans to function to avoid overheating A power supply cooling fan module can be replaced without powering down the system For information on removing and replacing the modules see Power Supply Cooling Fan Module on page 211 A CAUTION A power supply cooling fan module can be removed from a powered on system for a maximum period of 5 minutes Beyond that time the system may automatically shut down to prevent damage Planning About Your Storage Array 29 Power Indicator Codes Figure 2 6 Power Indicator Codes _ Item LED Type Icon Description l DC power The LED lights green when the DC output voltage is within the limit If this LED is off it indicates that the DC output voltage are not within the limit 2 Power supply cooling N The LED lights amber when the DC output fan fault voltage is not within the limit or a fault with the fan is detected If this LED is off it indicates that no fault condition is present 3 AC power lt The LED lights green when the AC input voltage is within the limit If this LED is o
82. 3200i Series represents Dell PowerVault MD3200i and Dell PowerVault MD3220i Your MD3200i Series product package includes e Dell PowerVault MD3200i Series storage array e Power cables e Bezel optional Introduction 19 e Mounting rails 2 optional e Dell PowerVault MD3200i Series resource media e The Rack Installation Instructions included with your rack solution describes how to install your enclosure into a rack e Getting Started With Your System provides an overview of enclosure features setting up your enclosure and technical specifications Dell PowerVault MD3200i Series Storage Array The Dell PowerVault MD3200i Series is a 2U rack mounted external redundant array of independent disks RAID storage array capable of accommodating up to 12 3 5 inch or 24 2 5 inch 6 0 Gbps Serial Attached SCSI SAS disks The MD3200i Series storage arrays can be daisy chained with MD1200 Series expansion enclosures providing access to a maximum of 96 disks in the entire storage system Connectivity between the storage array and the host server is provided by a standard Ethernet connection Dell PowerVault Modular Disk Storage Manager Dell PowerVault Modular Disk Storage Manager MDSM is a graphical user interface GUI application used to configure and manage one or more MD32001 Series Storage Arrays The MDSM software is located on the MD3200i Series resource media Dell PowerVault Modular Disk Configuration Utility Dell Powe
83. 6 and 10 For example in a system with parity checking consistency involves computing the data on one physical disk and comparing the results to the contents of the parity physical disk Planning MD3200i Series Storage Array Terms and Concepts 43 A consistency check is similar to a background initialization The difference is that background initialization cannot be started or stopped manually while consistency check can K NOTE Dell recommends that you run data consistency checks on a redundant array at least once a month This allows detection and automatic replacement of unreadable sectors Finding an unreadable sector during a rebuild of a failed physical disk is a serious problem because the system does not have the redundancy to recover the data Media Verification Another background task performed by the storage array is media verification of all configured physical disks in a disk group The storage array uses the Read operation to perform verification on the space configured in virtual disks and the space reserved for the metadata Cycle Time The media verification operation runs only on selected disk groups independent of other disk groups Cycle time is the time taken to complete verification of the metadata region of the disk group and all virtual disks in the disk group for which media verification is configured The next cycle for a disk group starts automatically when the current cycle completes You can set the
84. DSM 1 In the AMW select the Logical tab 2 Select the snapshot repository virtual disk for which you want to increase the capacity 3 Select Virtual Disk Increase Capacity K NOTE If no free capacity or unconfigured capacity is available the Increase Capacity option is disabled The Increase Snapshot Repository Capacity window displays the Virtual disk attributes The snapshot repository virtual disk name the associated snapshot virtual disk name the associated source virtual disk capacity and name the current capacity and the amount of free capacity that is available for the selected snapshot repository virtual disk appear If free 156 Configuration Premium Feature Snapshot Virtual Disks capacity is available the maximum free space appears in the Increase capacity by If free capacity does not exist on the disk group the free space that appears in the Increase capacity by spinner box is 0 You must add physical disks to create free capacity on the disk group To increase capacity of the snapshot repository virtual disk use one of these methods e Use the free capacity on the disk group of the snapshot repository virtual disk Go to step 5 e Add unconfigured capacity or physical disks to the disk group of the snapshot repository virtual disk Go to step 7 In Increase capacity by enter or select the appropriate capacity Click OK The Logical tab is updated The snapshot repository virtual disk having
85. Dell PowerVault MD3200i and MD3220i Storage Arrays Owner s Manual Regulatory Model E03J Series and E04J Series Regulatory Type E03J001 and E04J001 Notes Cautions and Warnings K NOTE A NOTE indicates important information that helps you make better use of your computer VAN CAUTION A CAUTION indicates potential damage to hardware or loss of data if instructions are not followed A WARNING A WARNING indicates a potential for property damage personal injury or death Information in this document is subject to change without notice 2010 Dell Inc All rights reserved Reproduction of these materials in any manner whatsoever without the written permission of Dell Inc is strictly forbidden Trademarks used in this text Dell the DELL logo OpenManage PowerEdge and PowerVault are trademarks of Dell Inc Microsoft Windows Internet Explorer MS DOS and Windows Server are either trademarks or registered trademarks of Microsoft Corporation in the United States and or other countries Red Hat and Red Hat Enterprise Linux are registered trademarks of Red Hat Inc in the United States and other countries SUSE is a registered trademark of Novell Inc in the United States and other countries VMware is a registered trademark of VMware Inc in the United States and or other jurisdictions Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their
86. HI J kK LM NO P Q S TU VWX Y Z _ ab cde ft gh i j kl mn of p qr st u v Wx y z o Configuration Using iSCSI 83 Changing the iSCSI Target Identification You cannot change the iSCSI target name but you can associate an alias with the target for simpler identification Aliases are useful because the iSCSI target names are not intuitive You should provide an iSCSI target alias that is meaningful and easy to remember To change the iSCSI target identification 1 2 3 4 5 K K In the AMW select the Setup tab Select Manage iSCSI Settings The Manage iSCSI Settings window is displayed Select the Target Identification tab Type the alias in iSCSI target alias Click OK NOTE Aliases can contain up to 30 characters Aliases can include letters numbers and the special characters underscore _ minus and pound sign No other special characters are permitted NOTE Open iSCSI which is used by Red Hat Enterprise Linux 5 and SUSE Linux Enterprise Server 10 with SP 1 does not support using target alias Changing the iSCSI Target Discovery Settings To change the iSCSI target discovery settings 1 2 84 In the AMW select the Setup tab Select Manage iSCSI Settings The Manage iSCSI Settings window is displayed Select the Target Discovery tab Select Use iSNS to activate iSCSI target discovery To activate iSCSI target discovery you can use one of the following methods
87. If the link status LED is not green replace the cables If the problem is not resolved see Getting Help on page 259 252 Troubleshooting Your Array Troubleshooting RAID Controller Modules VAN CAUTION Many repairs may only be done by a certified service technician You should only perform troubleshooting and simple repairs as authorized in your product documentation or as directed by the online or telephone service and support team Damage due to servicing that is not authorized by Dell is not covered by your warranty Read and follow the safety instructions that came with the product VAN CAUTION In the case of non redundant configurations it is recommended that you turn off the host server before turning off the array to prevent loss of data e If the array status LED is solid or blinking amber a In the AMW select the Summary tab and click on Storage Array needs attention Follow the listed procedures in the recovery guru s and wait for up to 5 minutes to check if the LED has turned blue See Recovery Guru on page 232 b If following the recovery guru procedures does not solve the problem complete the following procedure to further troubleshoot the array c Turn off the host server as appropriate d Remove the RAID controller module and verify that the pins on backplane and RAID controller module are not bent See Removing a RAID Controller Module Blank on page 205 e Reinstall the RAID controller module
88. Many repairs may only be done by a certified service technician You should only perform troubleshooting and simple repairs as authorized in your product documentation or as directed by the online or telephone service and support team Damage due to servicing that is not authorized by Dell is not covered by your warranty Read and follow the safety instructions that came with the product Troubleshooting Storage Array Startup Failure If your system halts during startup check if The array emits a series of beeps The array fault LEDs are lit See RAID Controller Modules on page 31 There is a constant scraping or grinding sound when you access the hard drive See Getting Help on page 259 Troubleshooting Loss of Communication For information about troubleshooting loss of communication see Troubleshooting Array and Expansion Enclosure Connections on page 255 Troubleshooting External Connections Verify that the cables are connected to the correct ports before troubleshooting any external devices For the location of the back panel connectors on your array see Figure 3 1 Ensure that all the cables are securely attached to the external connectors on your array For information on cabling see the Dell PowerVault MD3200i Deployment Guide Troubleshooting Your Array 249 Troubleshooting Power Supply Cooling Fan Module A CAUTION Many repairs may only be done by a certified service technician You should only p
89. NVSRAM in the Download area K NOTE If you select a storage array that cannot be upgraded the NVSRAM button is disabled The Download NVSRAM dialog appears The current firmware version and the NVSRAM version of the selected storage arrays appear K NOTE If you select the storage arrays with different RAID controller module types that cannot be updated with the same NVSRAM file and click NVSRAM the Incompatible RAID Controller Modules dialog appears Click OK to close the dialog and select the storage arrays with similar RAID controller module types To locate the directory in which the NVSRAM file to download resides click Browse in the Select file area The Select File dialog appears Select the file to download Click OK Any attributes of the NVSRAM file appear in the NVSRAM file information area The attributes indicate the version of the NVSRAM file Click OK The Confirm Download dialog appears Click Yes The download starts and a progress indicator appears in the Status column of the Upgrade RAID Controller Module Firmware window Downloading Physical Disk Firmware A CAUTION When updating physical disk firmware you should stop all 1 0 activity to the array to prevent data loss The physical disk firmware controls various features of the physical disk The disk array controller DAC uses this type of firmware Physical disk firmware stores information about the system configuration on an area of the phys
90. Name and Physical Disk Selection dialog The Create a secure disk group option is active only when these conditions are met e A security key is installed in the storage array e At least one security capable physical disk is installed in the storage array e All of the physical disks that you selected on the Physical tab are security capable physical disks You can erase security enabled physical disks so that you can reuse the drives in another disk group or in another storage array When you erase security enabled physical disks ensure that the data cannot be read When all of the physical disks that you have selected in the Physical pane are security enabled and none of the selected physical disks is part of a disk group the Secure Erase option appears in the Physical Disk menu The storage array password protects a storage array from potentially destructive operations by unauthorized users The storage array password is independent from self encrypting disk and should not be confused with the pass phrase that is used to protect copies of a security key However it is good practice to set a storage array password Configuration Disk Groups and Virtual Disks 115 Creating a Security Key When you create a security key it is generated by and securely stored by the array You cannot read or view the security key A copy of the security key must be kept on some other storage medium for backup in case of system failure or for transfer
91. Operations Limit The maximum number of active concurrent disk group processes per installed RAID controller module is one This limit is applied to the following disk group processes 46 Planning MD3200i Series Storage Array Terms and Concepts e Virtual disk RAID level migration e Segment size migration e Virtual disk capacity expansion e Disk group expansion e Disk group defragmentation If a redundant RAID controller module fails with an existing disk group process the process on the failed controller is transferred to the peer controller A transferred process is placed in a suspended state if there is an active disk group process on the peer controller The suspended processes are resumed when the active process on the peer controller completes or is stopped K NOTE If you try to start a disk group process on a controller that does not have an existing active process the start attempt fails if the first virtual disk in the disk group is owned by the other controller and there is an active process on the other controller RAID Background Operations Priority The storage array supports a common configurable priority for the following RAID operations e Background initialization e Rebuild e Copy back e Virtual disk capacity expansion e Raid level migration e Segment size migration e Disk group expansion e Disk group defragmentation The priority of each of these operations can be changed to address performanc
92. Port Identifier dialog appears replace the current host port identifier with a known unassociated host port identifier or create a new host port identifier update User label and click Replace To remove the host port identifier Select the appropriate host port identifier and click Edit the Remove Host Port Identifier dialog appears type yes and click OK For more information see the PowerVault Modular Disk Storage Manager online help topics Configuration About Your Host Configuration Disk Groups and Virtual Disks Creating Disk Groups and Virtual Disks Disk groups are created in the unconfigured capacity of a storage array and virtual disks are created in the free capacity of a disk group The maximum number of physical disks supported in a disk group is 30 The hosts attached to the storage array read and write data to the virtual disks NOTE Before you can create virtual disks you must first organize the physical disks into disk groups and configure host access Then you can create virtual disks within a disk group To create a virtual disk use one of the following methods e Create a new disk group from unconfigured capacity You first define the RAID level and free capacity available storage space for the disk group and then you define the parameters for the first virtual disk in the new disk group e Create a new virtual disk in the free capacity of an existing disk group You only need to specify the parameters
93. SI bus and re aggregate devices at multipathing layer 186 Configuration Device Mapper Multipath for Linux Management Firmware Downloads Downloading RAID Controller and NVSRAM Packages A version number exists for each firmware file The version number indicates whether the firmware is a major version or a minor version You can use the Enterprise Management Window EMW to download and activate both the major firmware versions and the minor firmware versions You can use the Array Management Window AMW to download and activate only the minor firmware versions K NOTE Firmware versions are of the format aa bb cc dd Where aa is the major firmware version bb cc dd is the minor firmware version Depending on which one changes firmware can be updated from EMW and AMW or only EMW You can activate the files immediately or wait until a more convenient time You might want to activate the firmware or NVSRAM files at a later time because of these reasons Time of day Activating the firmware and the NVSRAM can take a long time so you can wait until I O loads are lighter The RAID controller modules are offline briefly to load the new firmware e Type of package You might want to test the new firmware on one storage array before loading the files onto other storage arrays The ability to download both files and activate them later depends on the type of RAID controller module in the storage array K NOTE You can
94. Security Key File Enter Pass Phrase window is displayed Edit the default path by adding a file name to the end of the path or Click Browse navigate to the required folder and enter the name of the file In Pass phrase enter a string for the pass phrase The pass phrase must meet the following criteria It must be between eight and 32 characters long e It must contain at least one uppercase letter It must contain at least one lowercase letter e It must contain at least one number e t must contain at least one non alphanumeric character for example lt gt t The pass phrase that you enter is masked In Confirm pass phrase re enter the exact string you entered in Pass phrase Make a record of the pass phrase you entered You need it for later secure operations Click Save Make a record of the security key identifier and the file name from the Save Security Key Complete dialog and click OK Configuration Disk Groups and Virtual Disks 119 Unlocking Secure Physical Disks You can export a security enabled disk group to move the associated physical disks to a different storage array After you install those physical disks in the new storage array you must unlock the physical disks before data can be read from or written to the physical disks To unlock the physical disks you must supply the security key from the original storage array The security key on the new storage array is different and cannot un
95. See Power Supply and Cooling Fan Features on page 29 K NOTE After installing a power supply allow several seconds for the array to recognize the power supply and to determine if it is working properly If the problem is not resolved see Getting Help on page 259 250 Troubleshooting Your Array Troubleshooting Array Cooling Problems VAN CAUTION Many repairs may only be done by a certified service technician You should only perform troubleshooting and simple repairs as authorized in your product documentation or as directed by the online or telephone service and support team Damage due to servicing that is not authorized by Dell is not covered by your warranty Read and follow the safety instructions that came with the product Ensure that none of the following conditions exist array cover or drive blank is removed Ambient temperature is too high See Technical Specifications in the Getting Started Guide External airflow is obstructed The power supply cooling fan module is removed or has failed See Troubleshooting Power Supply Cooling Fan Module on page 250 If the problem is not resolved see Getting Help on page 259 Troubleshooting Expansion Enclosure Management Modules A CAUTION Many repairs may only be done by a certified service technician You should only perform troubleshooting and simple repairs as authorized in your product documentation or as directed by the online or telephone serv
96. Settings window is displayed Select one or more virtual disks To select nonadjacent virtual disks press lt Ctrl gt click To select adjacent virtual disks press lt Shift gt click To select all of the available virtual disks click Select All In the Select cache properties area you can select e Enable read caching to enable read caching e Enable dynamic cache read prefetch to enable dynamic cache read prefetch e Enable write caching to enable write caching Enable write caching with mirroring to mirror cached data across two redundant RAID controller modules that have the same cache size e Enable write caching without batteries to permit write caching to continue even if the RAID controller module batteries are discharged completely not fully charged or are not present CAUTION Possible loss of data Selecting the Enable write caching without batteries option lets write caching continue even when the batteries are discharged completely or are not fully charged Typically write caching is turned off temporarily by the RAID controller module until the batteries are charged If you select this option and do not have a universal power supply for protection you could lose data In addition you could lose data if you do not have RAID controller module batteries and you select the Enable write caching without batteries option NOTE When the Optional RAID controller module batteries option is enabled the E
97. The amount of time that a change segment size operation takes depends on The I O load from the host The modification priority of the virtual disk The number of physical disks in the disk group The number of physical disk ports The processing power of the storage array RAID controller modules If you want this operation to complete faster you can change the modification priority although this might decrease system I O performance To change the segment size of a virtual disk 1 2 3 In the AMW select the Logical tab and select a virtual disk Select Virtual Disk Change Segment Size Select the required segment size A message prompts you to confirm the selected segment size Click Yes Configuration Disk Groups and Virtual Disks 111 The segment size modification operation begins The virtual disk icon in the Logical pane shows an Operation in Progress status while the operation is taking place K NOTE To view the progress or change the priority of the modification operation select a virtual disk in the disk group and select Virtual Disk Change gt Modification Priority Changing the 1 0 Type You can specify the virtual disk I O characteristics for the virtual disks that you are defining as part of the storage array configuration The expected I O characteristics of the virtual disk is used by the system to indicate an applicable default virtual disk segment size and dynamic cache read prefetch setting K
98. Troubleshooting Automatically Collect the Support Bundle Data 229 Capturing the State Information 242 Collecting the Physical Disk Data 230 Device Health Conditions 225 Event Log 231 Finding Nodes 235 Locating an Expansion Enclosure 241 Recovering from an Unidentified Storage Array 244 Index 265 Recovering from an Unresponsive Storage Array Condition 237 Recovery Guru 232 Starting or Restarting the Host Agent Software 246 Start Up Routine 225 Storage Array Profile 232 Storage Array Support Data 229 Unidentified Devices 244 Viewing the Logical Associations 234 Viewing the Physical Associations 234 troubleshooting 249 connections 255 cooling problems 251 damaged enclosure 256 external connections 249 hard drives 254 loss of communication 249 power supply cooling fan module 250 startup failure 249 wet enclosure 255 U Unconfigured Capacity 138 User Interface AMW 61 EMW 60 Overview 59 Using Go To 236 V Viewing iSCSI Statistics and Setting Baseline Statistics 89 Viewing or Ending an iSCSI Session 88 Virtual Disk Background Initialization 43 Consistency Check 43 Copy and Modification Operations 167 Copy Restrictions 165 Copying 169 Creating 166 Creating a Copy for an MSCS Shared Disk 164 Cycle Time 44 Failed Copy 168 Foreground Initialization 43 Media Verification 44 Read Write Permissions 165 Recopying 172 Recove
99. ablish communication with the controllers in the storage array at regular times If the storage array was unresponsive and a subsequent try to connect to the storage array succeeds the storage array becomes responsive 7 For an out of band storage array look to see if management operations are taking place on the storage array from other storage management stations The type of management operations being done and the number of management sessions taking place together establish the number of TCP IP connections made to a controller When the maximum number of TCP IP connections have been made the controller stops responding This problem corrects itself because after some TCP IP connections complete the controller then becomes responsive to other connection tries 8 If the storage array is still unresponsive problems might exist with the controllers If these problems exist see the Dell support website at support dell com Starting or Restarting the Host Context Agent Software The host context agent software module is the software component that resides on the server or management station that communicates with the MD32001 series storage arrays The SMagent software automatically starts after you reboot the host Windows To restart the SMagent software in Windows 1 Click Start Settings Control Pane Administrative Tools Services 246 Troubleshooting Your Storage Array Software or Click Start Administrative Tools Services
100. acity available in the storage array Then you define basic and optional advanced parameters for the virtual disk With the advent of different physical disk technologies it is now possible to mix physical disks with different media types and different interface types within a single storage array In this release of MDSM the following media types are supported e Hard physical disk e Solid State Disk SSD Physical Disk Security with Self Encrypting Disk Self encrypting disk SED technology prevents unauthorized access to the data on a physical disk that is physically removed from the storage array The storage array has a security key Self encrypting disks provide access to data only through an array that has the correct security key The self encrypting disk or a security capable physical disk encrypts data during writes and decrypts data during reads For more information see the PowerVault Modular Disk Storage Manager online help topics You can create a secure disk group from security capable physical disks When you create a secure disk group from security capable physical disks the physical disks in that disk group become security enabled When a security capable physical disk has been security enabled the physical disk requires the correct security key from a RAID controller module to read or write the data All of the physical disks and RAID controller modules in a storage array share the same security key The shared securit
101. ailable in the Virtual Disk area Click Close The mappings are saved The Topology pane and the Defined Mappings pane in the Mappings tab are updated to reflect the mappings Configuration Disk Groups and Virtual Disks 127 Modifying and Removing Host to Virtual Disk Mapping You can modify or remove a host to virtual disk mapping for several reasons such as an incorrect mapping or reconfiguration of the storage array Modifying or removing a host to virtual disk mapping applies to both hosts and host groups To modify or remove host to virtual disk mapping 2 128 NOTE Before you modify or remove a host to virtual disk mapping you must stop any data access I O to the virtual disks to prevent data loss In the AMW select the Mappings tab In the Defined Mappings pane perform one of these actions e Select a single virtual disk and select Mappings Change gt Mapping e Right click the virtual disk and select Change Mapping from the pop up menu In Host group or host select the appropriate host group or host By default the drop down list shows the current host group or the host associated with the selected virtual disk In Logical unit number select the appropriate LUN The drop down list shows only the currently available LUNs that are associated with the selected virtual disk Click OK Stop any host applications associated with this virtual disk and unmount the virtual disk if applicable from you
102. al Disks K NOTE If you ordered this feature you received a Premium Feature Activation card shipped in the same box as your Dell PowerVault MD storage array Follow the directions on the card to obtain a key file and to enable the feature K NOTE The snapshot feature allows up to eight snapshots per LUN and 128 per array to be present at the same time A snapshot virtual disk is a point in time image of a virtual disk in a storage array It is not an actual virtual disk containing a copy of the original data It is a reference to the data that was contained on a virtual disk at a specific time A snapshot virtual disk is the logical equivalent of a complete physical copy However you can create a snapshot virtual disk much faster than a physical copy using less disk space The virtual disk on which the snapshot is based called the source virtual disk must be a standard virtual disk in your storage array Typically you create a snapshot so that an application such as a backup application can access the snapshot and read the data while the source virtual disk remains online and accessible K NOTE No 1 0 requests are permitted on the source virtual disk while the virtual disk snapshot is being created A snapshot repository virtual disk containing metadata and copy on write data is automatically created when a snapshot virtual disk is created The only data stored in the snapshot repository virtual disk is that which has changed
103. al disk During a virtual disk copy the same RAID controller module must own both the source virtual disk and the target virtual disk Sometimes both virtual disks do not have the same preferred RAID controller module when the virtual disk copy starts Therefore the ownership of the target virtual disk is automatically transferred to the preferred RAID controller module of the source virtual disk When the virtual disk copy is completed or is stopped ownership of the target virtual disk is restored to its preferred RAID controller module If ownership of the source virtual disk is changed during the virtual disk copy ownership of the target virtual disk is also changed Under certain operating system environments it might be necessary to reconfigure the multi path driver before an I O path can be used To change the ownership of the virtual disk to the connected controller 1 In the AMW select the Logical tab and select a virtual disk 2 Select Virtual Disk Change Ownership Preferred Path 3 Select the appropriate RAID controller module slot and click Yes to confirm the selection Removing Host to Virtual Disk Mapping To remove the host to virtual disk mapping 1 In the AMW select the Mapping tab 2 Select a virtual disk from the Defined Mappings pane Configuration Disk Groups and Virtual Disks 129 3 Perform one of these actions Select Mappings Remove e Right click the virtual disk and select Remove Mapping from the pop up men
104. al disk for only one virtual disk copy at a time A virtual disk copy for any virtual disk cannot be mounted on the same host as the source virtual disk Windows does not allow a drive letter to be assigned to a virtual disk copy A virtual disk with a Failed status cannot be used as a source virtual disk or target virtual disk A virtual disk with a Degraded status cannot be used as a target virtual disk A virtual disk participating in a modification operation cannot be selected as a source virtual disk or target virtual disk Modification operations include the following Capacity expansion RAID level migration Segment sizing Virtual disk expansion Defragmenting a virtual disk NOTE The following host preparation sections also apply when using the virtual disk copy feature through the CLI interface Creating a Virtual Disk Copy A CAUTION Possible loss of data Source virtual disks that are participating in a virtual disk copy are available for read 1 0 activity only while a virtual disk copy has a status of In Progress or Pending Write requests are allowed after the virtual disk copy has completed If the source virtual disk has been formatted with a journaling file system any attempt to issue a read request to the source virtual disk might be rejected by the storage array and an error message might appear The journaling file system driver issues a write request before it attempts to issue the read
105. anagement Window You can launch the AMW from the EMW The AMW provides management functions for a single storage array You can have multiple AMWs open simultaneously to manage different storage arrays To launch the AMW 1 In the EMW on the Devices tab double click on the relevant storage array The context menu for the selected storage is displayed 2 Inthe context menu select Manage Storage Array The AMW for the selected storage is displayed The AMW has the following tabs Summary tab You can view the following information about the storage array Status e Hardware components e Capacity e Hosts and Mappings e Storage partitions e Disk groups and virtual disks Configuration Overview 61 Logical tab You can view the organization of the storage array by virtual disks disk groups free capacity nodes and any unconfigured capacity for the storage array Physical tab You can view the organization of the storage array by RAID controller modules physical disks and other hardware components Mappings tab You can define the hosts host groups and host ports You can change the mappings to grant virtual disk access to host groups and hosts and create storage partitions Setup tab You can complete the initial setup tasks to configure the storage array Support You can complete common support tasks like downloading RAID controller module firmware viewing the online help and so on In the AMW
106. and Virtual Disks 141 Recovered media error Data could not be read by the physical disk on the first attempt but was successfully read on a subsequent attempt Data is rewritten to the physical disk and verified and the error is reported to the event log Redundancy mismatches error The first 10 redundancy mismatches that are found on the virtual disk are reported to the event log Unfixable error Data could not be read and parity or redundancy information could not be used to regenerate the data For example redundancy information cannot be used to reconstruct the data on a degraded virtual disk The error is reported to the event log For more information see the PowerVault Modular Disk Storage Manager online help topics Changing Media Scan Settings To change the media scan settings 1 2 142 In the AMW select the Logical tab and select any virtual disk Select Virtual Disk Change Media Scan Settings The Change Media Scan Settings window is displayed Deselect Suspend media scan if selected In Scan duration enter or select the duration in days for the media scan The media scan duration specifies the number of days for which the media scan runs on the selected virtual disks To disable media scans on an individual virtual disk select the virtual disk in the Select virtual disks to scan area and deselect Scan selected virtual disks To enable media scans on an individual virtual disk select the virtua
107. and product and some services may not be available in your area To contact Dell for sales technical support or customer service issues 1 Visit support dell com 2 Click your country region at the bottom of the page For a full listing of country region click All Click All Support from Support menu Select the appropriate service or support link based on your need Choose the method of contacting Dell that is convenient for you Getting Help 259 260 Getting Help Index A Access Virtual Disk 64 Advanced Feature Using Snapshot and Disk Copy Together 53 Advanced Features 50 Snapshot Repository Virtual Disk 52 Snapshot Virtual Disks 51 Advanced iSCSI Host Ports Settings 87 Advanced Path 149 Array Management Types In Band Management 64 Out of Band Management 63 backplane installing 220 removing 217 Battery Settings 78 C Change Controller Ownership of the Virtual Disk 129 VO Type 112 iSCSI Target Authentication 81 iSCSI Target Identification 84 RAID Controller Module Ownership of a Disk Group 130 RAID Controller Module Ownership of a Virtual Disk or a Disk Group 133 RAID Level of a Disk Group 131 135 Segment Size of a Virtual Disk 111 Virtual Disk Cache Settings 109 Virtual Disk Modification Priority 108 CHAP Secrets Creating 82 Initiator CHAP Secret 83 Target CHAP Secret 83 Valid Characters 83 Choosing an Appropriate Physical Disk Type 113 Confi
108. array and click OK Changing Expansion Enclosure ID Numbers When an MD1200 series expansion enclosure is connected to an MD32001 series storage array for the first time an enclosure ID number is assigned and maintained by the expansion enclosure This enclosure ID number is also shown in the MDSM To change the enclosure ID numbers 1 In the AMW select the storage array and select Storage Array gt Change Enclosure ID 2 Select a new enclosure ID number from the Change Enclosure ID list The enclosure ID must be between 0 and 99 inclusive 3 To save the changed enclosure ID click Change Changing the Enclosure Order in the Physical Pane You can change the order of the RAID controller modules and the expansion enclosures in the Physical pane to match the hardware configuration in your storage array The Physical pane that initially appears is a default view that may not match your storage array The enclosure order change remains in effect until it is modified again To change the enclosure order in the physical pane 1 In the AMW select Storage Array Change Enclosure Order 2 From the enclosures list select the enclosure you want to move and click either Up or Down to move the enclosure to the new position Configuration About Your Storage Array 73 3 Click OK 4 Ifyou have set a password for the selected storage array the Enter Password dialog appears Type the current password for the storage array 5 Click
109. arrays e Locate the storage arrays e Name or Rename discovered storage arrays e Add storage array comments to the Table view e Sort rows in the Table view according to different criteria Store your EMW view preferences and configuration data in local configuration files The next time you open the EMW data from the local configuration files is used to show customized view and preferences e Monitor the status of managed storage arrays and indicate status using appropriate icons e Add or remove management connections e Configure alert notifications for all selected storage arrays through e mail or SNMP traps e Report critical events to the configured alert destinations e Launch the AMW for a selected storage array e Runa script to perform batch management tasks on specific storage arrays e Import the operating system theme settings into the MDSM e Upgrade firmware on multiple storage arrays concurrently 60 Configuration Overview Inheriting the System Settings Use the Inherit System Settings option to import the operating system theme settings into the MDSM Importing system theme settings affects such features as font type font size color and contrast in the MDSM 1 Open the Inherit System Settings window in one of these ways e Select Tools Inherit System Settings e Select the Setup tab and click Inherit System Settings 2 Select Inherit system settings for color and font 3 Click OK Array M
110. art of a disk group Optimal Unassigned The physical disk in the indicated slot Steady Green is unused and available to be configured Optimal Hot Spare The physical disk in the indicated slot Steady Green standby is configured as a hot spare Optimal Hot Sparein The physical disk in the indicated slot Steady Green use is in use as a hot spare within a disk group Failed Assigned The physical disk in the indicated slot Amber flashing Unassigned has failed because of an unrecoverable 150 ms Hot Sparein error an incorrect drive type or drive use or Hot size or by its operational state being Spare standby set to failed Replaced Assigned The physical disk in the indicated slot Green flashing has been replaced and is ready to be On 400 ms Off or is actively being configured intoa 100 ms disk group Pending Assigned A Self Monitoring Analysis and Flashing Green Failure Unassigned Reporting Technology SMART error 500 ms Amber Hot spare in has been detected on the physical disk 500 ms and off use or Hot in the indicated slot 1000ms Spare standby 38 Planning MD3200i Series Storage Array Terms and Concepts Table 4 1 RAID Controller Physical Disk States continued Status Mode Description Physical Disk Status LED Offline Not applicable The physical disk has either been spun Flashing Green down or had a rebuild aborted by user 3000 ms Amber request 3000 ms and off 3000ms Identify Assigned The
111. asing Secure 120 Unlocking Secure 120 Physical Disks Virtual Disks and Disk Groups 37 Power Indicator Codes 30 Power Supply and Cooling Fan Features 29 Preferred RAID Controller Module Ownership 168 Preparing Host Servers Simple path 147 RAID 40 Changing Level of disk group 135 RAID 0 41 RAID 1 41 RAID 10 42 RAID 5 42 RAID 6 42 Usage 41 RAID Background Operations Priority 7 recommended tools 197 removing backplane 217 control panel MD1200 215 drive blank 199 EMM 207 Index 264 EMM blank 205 front bezel 198 hard drive 200 hard drive from a drive carrier 202 power supply cooling fan module 211 Removing Copy Pairs 174 Removing Host Access 96 Restricted Mappings 132 S Safety 19 safety 249 Security Key Changing 117 Creating 116 Saving 119 Segment Size 42 Setting a Password 69 Setting Copy Priority 170 Simple Path 146 SMART 39 SMrepassist Utility 243 Snapshot Repository Capacity 156 Snapshot Virtual Disk Creating using advanced path 147 Creating using simple path 146 Snapshot Virtual Disks Disabling 159 Re create 161 Re creating 159 Starting or Stopping the Host Context Agent 99 Storage Array RAID Controller Module Clocks 79 Storage Array Media Scan 141 Storage Arrays 64 Automatic Discovery 65 Manual Addition 65 Storage Partitioning 136 support contacting Dell 259 T telephone numbers 259
112. automatically transferred to the preferred RAID controller module of the source virtual disk When the virtual disk copy is completed or is stopped ownership of the target virtual disk is restored to its preferred RAID controller module If ownership of the source virtual disk is changed during the virtual disk copy ownership of the target virtual disk is also changed Under certain operating system environments it might be necessary to reconfigure the multi path driver before an I O path can be used Configuration Disk Groups and Virtual Disks 133 134 1 Do you want to change the RAID controller module ownership of a virtual disk or a disk group e Change the RAID controller module ownership of a virtual disk Go to step 2 e Change the RAID controller module ownership of a disk group Go to step 3 To change the RAID controller module ownership of a virtual disk perform these steps a Select the Logical tab b Select the virtual disk c Select Virtual Disk Change Ownership Preferred Path Alternatively you can right click the virtual disk and select Change gt Ownership Preferred Path from the pop up menu d Select the RAID controller module CAUTION Possible loss of data access If you do not use a multi path driver shut down any host applications that are currently using the virtual disk This action prevents application errors when the 1 0 path changes e Click Yes The ownership of the virtual disk is c
113. cal disk e Placing data on multiple physical disks striping allows input output I O operations to occur simultaneously and improve performance e Storing redundant data on multiple physical disks using mirroring or parity supports reconstruction of lost data if an error occurs even if that error is the failure of a physical disk 40 Planning MD3200i Series Storage Array Terms and Concepts Each RAID level provides different performance and protection You should select a RAID level based on the type of application access fault tolerance and data you are storing The storage array supports RAID levels 0 1 5 6 and 10 The maximum number of physical disks that can be used in a disk group depends on the RAID level e 96 for RAID 0 1l and 10 e 30 for RAID 5 and 6 RAID Level Usage To ensure best performance you should select an optimal RAID level when you create a system physical disk The optimal RAID level for your disk array depends on e Number of physical disks in the disk array e Capacity of the physical disks in the disk array e Need for redundant access to the data fault tolerance gt Disk performance requirements RAID 0 RAID 0 uses disk striping to provide high data throughput especially for large files in an environment that requires no data redundancy RAID 0 breaks the data down into segments and writes each segment to a separate physical disk I O performance is greatly improved by spreading the I O
114. ccess to LUNs up to 256 0 to 255 and a restricted host type is added to the Default Group In this case the host that is associated with the restricted host type is able to access virtual disks in the Default Group with LUNs within its limits For example if the Default Group had two virtual disks mapped to LUNs 254 and 255 the host with the restricted host type would not be able to access those two virtual disks e Ifthe Default Group has a restricted host type assigned and the storage partitions are disabled you can map only a total of 32 LUNs Any additional virtual disks that are created are put in the Unidentified Mappings area If additional mappings are defined for one of these Unidentified Mappings the Define Additional Mapping dialog shows the LUN list and the Add button is unavailable Do not configure dual mappings on a Windows host e If there is a host with a restricted host type that is part of a specific storage partition all of the hosts in that storage partition are limited to the maximum number of LUNs allowed by the restricted host type 132 Configuration Disk Groups and Virtual Disks e You cannot move a host with a restricted host type into a storage partition that already has LUNs mapped that are greater than what is allowed by the restricted host type For example if you have a restricted host type that allows only LUNs up to 31 you cannot move that restricted host type into a storage partition that has LUN
115. cess The storage array automatically restarts when the High Performance Tier feature is enabled or disabled During the restart data is unavailable Data availability is restored when the array restarts To upgrade from a standard performance tier storage array to a high performance tier storage array you enable the high performance tier premium feature using the Dell PowerVault Modular Disk Storage Management MDSM software When the high performance tier feature is enabled or disabled the array restarts During this time data access and management access to the controller will be temporarily lost It is recommended that all I O to the array be stopped before this feature is enabled or disabled While the array is restarting the state of the array in the MDSM application may change from Optimal to Unresponsive When the restart completes the status will return to Optimal When the array status returns to Optimal verify that all communication sessions have been reestablished If any sessions are not automatically reestablished you must reestablished the sessions manually When all communication sessions to the array are ready I O to the array can be restarted Configuration Premium Feature Upgrading to High Performance Tier 175 176 Configuration Premium Feature Upgrading to High Performance Tier Configuration Device Mapper Multipath for Linux Overview The MD3200i Series storage array uses a Linux operating
116. ck the Mappings tab host group 2 Select the item that you want to rename and select Mappings Rename 3 Type a new label for the host and click OK For more information about Host Host Groups and Host Topology refer to Configuration About Your Host on page 93 90 Configuration Using iSCSI Configuration Event Monitor An event monitor is provided with Dell PowerVault Modular Disk Storage Manager MDSM The event monitor runs continuously in the background and monitors activity on the managed storage arrays If the event monitor detects any critical problems it can notify a host or remote system using e mail Simple Network Management Protocol SNMP trap messages or both For the most timely and continuous notification of events enable the event monitor on a management station that runs 24 hours a day Enabling the event monitor on multiple systems or having a combination of an event monitor and MDSM active can result in duplicate events but this does not indicate multiple failures on the array The Event Monitor is a background task that runs independently of the Enterprise Managemant Window To use the Event Monitor perform one of these actions e Set up alert destinations for the managed device that you want to monitor A possible alert destination would be the Dell Management Console More information about the Dell Management Console can be found at dell com e Replicate the alert settings from a par
117. command prompt type SMmonitor stop and press lt Enter gt When the program shutdown is complete the system displays the following message Stopping Monitor process 92 Configuration Event Monitor Configuration About Your Host Configuring Host Access Modular Disk Storage Manager MDSM software is comprised of multiple modules One of these modules is the Host Context Agent The host context agent is installed as part of the MDSM installation and runs continuously in the background If the host context agent is running on a host that host and the host ports connected from it to the storage array are automatically detected by Dell PowerVault Modular Disk Storage Manager MDSM and appear on the Mappings tab in the Array Management Window AMW For more information on the Mappings tab see Using the Mappings Tab on page 94 K NOTE The host context agent is not dynamic and must be restarted after establishing iSCSI sessions for MD3200i storage arrays to automatically detect them If the hosts are not detected automatically you can use the Define Host Wizard to define the hosts that access the virtual disks in the storage array Defining a host is one of the steps required to let the storage array know which hosts are attached to it and to allow access to the virtual disks For more information on defining the hosts see Defining a Host on page 94 To enable the host to write to the storage array you must map the h
118. ct an appropriate segment size 8 Select the appropriate Preferred RAID controller module ownership and click Next The Specify Virtual Disk to LUN Mapping window is displayed 9 Inthe Specify Virtual Disk to LUN Mapping window you can select e Default Mapping e The appropriate Host type e Map later Using Mappings View 10 Click Finish The virtual disks are created Changing the Virtual Disk Modification Priority You can specify the modification priority setting for a single virtual disk or multiple virtual disks on a storage array Guidelines to change the modification priority of a virtual disk e If more than one virtual disk is selected the modification priority defaults to the lowest priority The current priority is shown only if a single virtual disk is selected e Changing the modification priority by using this option modifies the priority for the selected virtual disks To change the virtual disk modification priority 1 In the AMW select the Logical tab 2 Select a virtual disk 108 Configuration Disk Groups and Virtual Disks 3 In the toolbar select Virtual Disk Change Modification Priority The Change Modification Priority window is displayed 4 Select one or more virtual disks To select nonadjacent virtual disks press lt Ctrl gt click To select adjacent virtual disks press lt Shift gt click To select all of the available virtual disks click Select All Move the Select modification priority s
119. ction e Key to the system keylock e 2 Phillips screwdriver e Wrist grounding strap Management Installing Array Components 197 Front Bezel Optional Removing the Front Bezel 1 Using the system key unlock the front bezel if locked 2 Lift up the release latch next to the keylock 3 Rotate the left end of the bezel away from the front panel 4 Unhook the right end of the bezel and pull the bezel away from the system Figure 16 1 Removing and Installing the Front Bezel 1 bezel 2 keylock 3 release latch 4 hinge tab Installing the Front Bezel 1 Hook the right end of the bezel onto the chassis 2 Fit the free end of the bezel onto the system 3 Secure the bezel with the keylock See Figure 16 1 198 Management Installing Array Components Hard Drives SAFETY Models AMT E03J and E04J Models AMT E03 and E04J are intended for installation only in restricted access locations as defined in cl 1 2 7 3 of IEC 60950 1 2005 Depending on your configuration your array either supports up to 24 2 5 inch SAS hard drives or up to 12 3 5 inch SAS hard drives in internal drive bays Hard drives are connected to a backplane through hard drive carriers and can be configured as hot swappable Removing a Drive Blank A CAUTION To maintain proper system cooling all empty hard drive bays must have drive blanks installed 1 If installed remove the front bezel See Removing the Front Bezel on page 198 2 Press the rel
120. d recommends step by step recovery procedures for problem resolution In the AMW to display i Guru perform one of these actions e Click Recovery Guru e Inthe Support tab click the Recover from Failure link e From the Status pane on the Summary tab click the Storage Array Needs Attention link You can detect a problem using the following indicators e Non Optimal status icons e Alert notification messages that are sent to the appropriate destinations e Hardware indicator lights The status icons return to Optimal status as problems are resolved Storage Array Profile The storage array profile provides a description of all of the components and properties of the storage array The storage array profile also provides the option to save the storage array profile information to a text file You might want to use the storage array profile as an aid during recovery or as an overview of the current configuration of the storage array Create a new copy of the storage array profile if your configuration changes 1 To open the storage array profile in the AMW perform one of the following actions e Select Storage Array View Profile e Select the Summary tab and click Storage Array Profile in the Status area Select the Support tab and click View Storage Array Profile The Storage Array Profile dialog appears The Storage Array Profile dialog contains several tabs and the title of each tab corresponds to the subject of the i
121. d small block requests equally The data path selected is one of the paths in the path group of the RAID controller module that owns the virtual disk e Least path weight with subset Windows operating systems only The least queue depth with subset policy is also known as the least I Os or least requests policy This policy routes the next I O request to a data path that has the least outstanding I O requests queued For this policy an I O request is simply a command in the queue The type of command or the number of blocks that are associated with the command are not considered The least queue depth with subset policy treats large block requests and small block requests equally The data path selected is one of the paths in the path group of the RAID controller module that owns the virtual disk Monitoring MD3200i Series System Performance You can use the Performance Monitor to select virtual disks and RAID controller modules to monitor or to change the polling interval Keep these guidelines in mind when using the Performance Monitor e The Performance Monitor does not dynamically update its display if any configuration changes occur while the window is open You must close the Performance Monitor window and reopen it for the changes to appear e Using the Performance Monitor to retrieve performance data can affect the normal storage array performance depending on the polling interval that you set 56 Planning MD3200i Series S
122. delines to configure host spare physical disks A You can use only unassigned physical disks with Optimal status as hot spare physical disks You can unassign only hot spare physical disks with Optimal or Standby status You cannot unassign a hot spare physical disk that has the In Use status A hot spare physical disk has the In Use status when it is in the process of taking over for a failed physical disk If a hot spare physical disk does not have Optimal status follow the Recovery Guru procedures displayed by the MDSM application to correct any problem before trying to unassign the physical disk Hot spare physical disks must be of the same media type and interface type as the physical disks that they are protecting If there are secure disk groups and security capable disk groups in the storage array the hot spare physical disk must match the security capability of the disk group Hot spare physical disks must have capacities equal to or larger than the used capacity on the physical disks that they are protecting The availability of enclosure loss protection for a disk group depends on the location of the physical disks that comprise the disk group To make sure that enclosure loss protection is not affected you must replace a failed physical disk to initiate the copyback process See Enclosure Loss Protection on page 124 CAUTION If a hot spare physical disk does not have Optimal status follow the Recovery Guru procedures
123. disk to the target virtual disk in a storage array 52 Planning MD3200i Series Storage Array Terms and Concepts Source Virtual Disk When you create a virtual disk copy a copy pair consisting of a source virtual disk and a target virtual disk is created on the same storage array When a virtual disk copy is started data from the source virtual disk is copied completely to the target virtual disk Target Virtual Disk When you start a virtual disk copy the target virtual disk maintains a copy of the data from the source virtual disk You can choose whether to use an existing virtual disk or create a new virtual disk as the target virtual disk If you choose an existing virtual disk as the target all data on the target is overwritten A target virtual disk can be a standard virtual disk or the source virtual disk of a failed or disabled snapshot virtual disk K NOTE The target virtual disk capacity must be equal to or greater than the source virtual disk capacity When you begin the disk copy process you must define the rate at which the copy is completed Giving the copy process top priority slightly impacts I O performance while giving it lowest priority makes the copy process longer to complete You can modify the copy priority while the disk copy is in progress For more information see the online help topics Virtual Disk Recovery You can use the Edit host server to virtual disk mappings feature to recover data from t
124. e Virtual Disk Copy 163 K Copying data for improved access As your storage requirements for a virtual disk change you can use a virtual disk copy to copy data to a virtual disk in a disk group that uses drives with larger capacity within the same storage array Copying data for larger access capacity enables you to move data to greater capacity physical disks for example 61 GB to 146 GB Restoring snapshot virtual disk data to the source virtual disk The Virtual Disk Copy feature enables you first to restore the data from a snapshot virtual disk and then to copy the data from the snapshot virtual disk to the original source virtual disk Creating a backup copy The Virtual Disk Copy feature enables you to create a backup of a virtual disk by copying data from one virtual disk the source virtual disk to another virtual disk the target virtual disk in the same storage array minimizing the time that the source virtual disk is unavailable to host write activity You can then use the target virtual disk as a backup for the source virtual disk as a resource for system testing or to copy data to another device such as a tape drive or other media NOTE Recovering from a backup copy You can use the Edit Host to Virtual Disk Mappings feature to recover data from the backup virtual disk you created in the previous procedure The Mappings option enables you to unmap the source virtual disk from its host and then to map the backup
125. e Copy priority area select the appropriate copy priority depending on your system performance needs K NOTE There are five copy priority rates available lowest low medium high and highest If the copy priority is set at the lowest rate 1 0 activity is prioritized and the virtual disk copy takes longer Stopping a Virtual Disk Copy You can stop a virtual disk copy operation that has an In Progress status a Pending status or a Failed status Stopping a virtual disk copy that has a Failed status clears the Needs Attention status displayed for the storage array Keep these guidelines in mind when you stop a virtual disk copy To use this option select only one copy pair in the Copy Manager When the virtual disk copy is stopped all of the mapped hosts have write access to the source virtual disk If data is written to the source virtual disk the data on the target virtual disk no longer matches the data on the source virtual disk To stop a virtual disk copy complete the following steps 1 In the AMW select Virtual Disk Copy Copy Manager The Copy Manager window is displayed Select the copy pair in the table Select Copy Stop Click Yes Configuration Premium Feature Virtual Disk Copy 171 Recopying a Virtual Disk You can recopy a virtual disk when you have stopped a virtual disk copy and you want to start it again or when a virtual disk copy has failed The Recopy option overwrites existing data on th
126. e EMW Status Bar and the AMW Status Bar the icons also have these behaviors e Hold the mouse over the icon in the EMW Status Bar and the AMW Status Bar to show a tooltip with a brief description of the status e The icons for the Needs Attention status and Unresponsive status appear in EMW Status Bar and the AMW Status Bar if there are discovered storage arrays with either condition The EMW Tree view has additional status icons that are shown in the following table Troubleshooting Your Storage Array Software 227 Table 19 3 Additional Status Icons Status Icon Description Unsupported Alerts x Setting an alert on a s storage array with a Needs with a Needs Upgrade status is not supported In this case the Upgrade Status storage array shows both a Needs Upgrade status and an Unsupported Alerts icon in the Tree view The Unsupported Alerts icon indicates that the storage array cannot be monitored Alert Set f If you installed the Event Monitor with MDSM and if you have set alerts the Alert Set icon appears next to the storage array status in the Tree view for which the alerts have been set Setting an Alert at x You can set alerts at any of the nodes in the Tree the Parent Node view Setting an alert at a parent node level such Level as at a host level sets alert fir any child nodes If you set an alert at a parent node level and any of the in band storage array child nodes have a Needs Upgrade status the Al
127. e physical disk space not already assigned in the storage array Virtual disks are created within the free capacity of a disk group Free capacity is the space in a disk group that has not been assigned to a virtual disk Virtual Disk States The storage array recognizes the following virtual disk states Table 4 2 RAID Controller Virtual Disk States State Description Optimal The virtual disk contains physical disks that are all online Degraded The virtual disk with a redundant RAID level contains an inaccessible physical disk The system can still work properly but performance may be affected and additional disk failures may result in data loss Offline A virtual disk with one or more member disks in an inaccessible failed missing or offline state Data on the virtual disk is no longer accessible Force online The storage array forces a virtual disk that is in an Offline state to an Optimal state If all the member physical disks are not available the storage array forces the virtual disk to a Degraded state The storage array can force a virtual disk to an Online state only when a sufficient number of physical disks are available to support the virtual disk RAID Levels RAID levels determine the way in which data is written to physical disks Different RAID levels provide different levels of accessibility redundancy and capacity Using multiple physical disks has the following advantages over using a single physi
128. e requirements of the environment in which the operations are to be executed Planning MD3200i Series Storage Array Terms and Concepts 47 K NOTE Setting a high priority level impacts storage array performance Itis not advisable to set priority levels at the maximum level Priority should also be assessed in terms of impact to host server access and time to complete an operation For example the longer a rebuild of a degraded virtual disk takes the greater the risk for potential secondary disk failure Virtual Disk Migration and Disk Roaming Virtual disk migration is moving a virtual disk or a hot spare from one array to another by detaching the physical disks and re attaching them to the new array Disk roaming is moving a physical disk from one slot to another on the same array Disk Migration You can move virtual disks from one array to another without taking the target array offline However the disk group being migrated must be offline prior to performing the disk migration If the disk group is not offline prior to migration the source array holding the physical and virtual disks within the disk group marks them as missing However the disk groups themselves migrate to the target array An array can import a virtual disk only if it is in an optimal state You can move virtual disks that are part of a disk group only if all members of the disk group are being migrated The virtual disks automatically become available after
129. e settings cannot be imported during the import disk group procedure The following settings are removed cleared during the procedure e Persistent reservations e Host to virtual disk mappings e Virtual disk copy pairs Snapshot virtual disks and snapshot repository virtual disks e Remote mirror pairs e Mirror repositories Non Importable Components Some components cannot be imported during the import disk group procedure These components are removed during the procedure e Persistent reservations e Mappings e Virtual disk copy pairs Snapshot virtual disks and snapshot repository virtual disks Storage Array Media Scan The media scan is a background operation that examines virtual disks to verify that data is accessible The process finds media errors before normal read and write activity is disrupted and reports errors to the event log K NOTE You cannot enable background media scans on a virtual disk comprised of Solid State Disks SSDs Errors discovered by the media scan include e Unrecovered media error Data could not be read on the first attempt or on any subsequent attempts For virtual disks with redundancy protection data is reconstructed rewritten to the physical disk and verified and the error is reported to the event log For virtual disks without redundancy protection RAID 1 RAID 5 and RAID 6 virtual disks the error is not corrected but is reported to the event log Configuration Disk Groups
130. e target virtual disk and makes the target virtual disk read only to hosts This option fails all snapshot virtual disks associated with the target virtual disk if any exist Preparing Host Servers to Recopy a Virtual Disk K NOTE Before you create a new copy of a source virtual disk stop any data access I O activity or suspend data transfer to the source virtual disk and if applicable the target disk to ensure that you capture an accurate point in time image of the source virtual disk Close all applications including Windows Internet Explorer to make sure all I O activity has stopped K NOTE Removing the drive letter of the associated virtual disk s in Windows or unmounting the virtual drive in Linux helps to guarantee a stable copy of the drive for the virtual disk copy Before creating a new virtual disk copy for an existing copy pair both the host server and the associated virtual disk you are recopying have to be in the proper state Perform the following steps to prepare your host server and virtual disk 1 Stop all I O activity to the source and target virtual disk 2 Using your Windows system flush the cache to both the source and the target virtual disk if mounted At the host prompt type SMrepassist f lt filename identifier gt and press lt Enter gt For more information see SMrepassist Utility on page 243 3 Click the Summary tab then click Disk Groups amp Virtual Disks to ensure that the v
131. e unresponsive to both the host and the storage management station Use this option only under the guidance of your Technical Support representative 1 From the AMW select Advanced Troubleshooting Capture State Information 2 Read the information in the Confirm State Capture dialog and type yes to continue 3 In the Specify filename text box enter a name for the file to be saved or browse to a previously saved file if you want to overwrite an existing file Use the convention filename dmp for the name of the file The suffix dmp is added to the file automatically if you do not specify a suffix for the file 4 Click Start K NOTE Each test shows a status of Executing while itis in progress The test then shows Completed when it successfully finishes If any of the tests cannot be completed a status of Failed appears in the Execution summary window 5 Monitor the progress and completion status of all of the tests When they finish click OK to close the State Capture dialog Clicking Cancel stops the state capture process and any remaining tests do not complete Any test information that has been generated to that point is saved to the state capture file K NOTE Refer to the PowerVault Modular Disk Storage Manager online help topics for more information on troubleshooting and recovering from failures 242 Troubleshooting Your Storage Array Software SMrepassist Utility SMrepassist replication assistance is a ho
132. ease tab and slide the drive blank out until it is free of the drive bay See Figure 16 2 for PowerVault MD3200i and Figure 16 3 for PowerVault MD3220i Figure 16 2 Removing and Installing a 3 5 Inch Hard Drive Blank 1 drive blank 2 release tab Management Installing Array Components 199 Figure 16 3 Removing and Installing a 2 5 Inch Hard Drive Blank 1 drive blank 2 release tab Installing a Drive Blank 1 If installed remove the front bezel See Removing the Front Bezel on page 198 Insert the drive blank into the drive bay until the blank is fully seated Close the handle to lock the blank in place If applicable replace the front bezel See Installing the Front Bezel on page 198 Removing a Hard Drive A CAUTION Many repairs may only be done by a certified service technician 200 You should only perform troubleshooting and simple repairs as authorized in your product documentation or as directed by the online or telephone service and support team Damage due to servicing that is not authorized by Dell is not covered by your warranty Read and follow the safety instructions that came with the product If installed remove the front bezel See Removing the Front Bezel on page 198 Management Installing Array Components 2 From the Modular Disk Storage Manager MDSM software prepare the drive for removal Wait until the hard drive indicators on the drive carrier signal that the drive can be
133. eceive a warning that the snapshot repository virtual disk is becoming full you may expand the snapshot repository virtual disk from MDSM See Snapshot Repository Capacity on page 156 for step by step instructions Using Free Capacity You can increase the capacity of a virtual disk using the free capacity on the disk group of the standard virtual disk or the snapshot repository virtual disk The Free Capacity node shown in the Logical pane is a contiguous region of unassigned capacity on a defined disk group When increasing virtual disk capacity some or all of the free capacity might be used to achieve the required final capacity Data on the selected virtual disk remains accessible while the process for increasing virtual disk capacity is in progress Using Unconfigured Capacity You can increase the capacity of a standard virtual disk or a snapshot repository virtual disk using the unconfigured capacity when no free capacity exists on a disk group An increase is achieved by adding unconfigured capacity in the form of unassigned physical disks to the disk group of the standard virtual disk or the snapshot repository virtual disk See Disk Group Expansion on page 137 138 Configuration Disk Groups and Virtual Disks For more information see the PowerVault Modular Disk Storage Manager online help topics Disk Group Migration Disk group migration allows to you export a disk group so that you can import the disk group to a d
134. emoving Host to Virtual Disk Mapping 129 Changing the RAID Controller Module Ownership ofa DiskGroup 130 Changing the RAID Level of a Disk Group 131 Restricted Mappings 132 Changing the RAID Controller Module Ownership of a Virtual Disk or a Disk Group 133 Changing the RAID Level of a Disk Group 135 Storage Partitioning 136 Disk Group and Virtual Disk Expansion 137 Disk Group Expansion 137 Virtual Disk EXpansion 138 Using Free Capacity 138 Contents Using Unconfigured Capacity 138 Disk Group Migration 139 Export Disk Group 139 ExportingaDiskGroup 140 Import Disk Group 140 ImportingaDiskGroup 140 Storage Array MediaScan 141 Changing Media Scan Settings 142 Suspending the MediaScan 143 11 Configuration Premium Feature Snapshot Virtual Disks 145 Creating a Snapshot Virtual Disk Using the Simple Path 146 About the Simple Path 146 Preparing Host Servers to Create the Snapshot Using the Simple Path 147 Creating a Snapshot Virtual Disk Using the Advanced Path 149 About the Advanced Pathh 149 Preparing Host Servers to Create the Snapshot Using the Advanced Path 151 Creating the S
135. enclosure goes through a complete power cycle 26 Planning About Your Storage Array Back Panel Features and Indicators Figure 2 4 Back Panel Features and Indicators Dell PowerVault MD3200i Series 1 600W Power supply cooling fan 2 RAID Controller Module 0 module 3 RAID Controller Module 1 4 600W Power supply cooling fan module Planning About Your Storage Array 27 Hard Drive Indicator Patterns Figure 2 5 Hard Drive Indicators OO A 1 hard drive activity indicator green 2 hard drive status indicator green and amber 28 Planning About Your Storage Array Drive Status Indicator Pattern Condition Off The physical disk is not yet discovered by the host server e has been spun down for removal not supported for the RAID controller module or is not in the physical disk slot NOTE The drive status indicator remains off until all hard drives are initialized after system power is turned on Drives are not ready for insertion or removal during this time Steady green Physical disk is online Green flashing On 250 ms Off 250 ms Physical disk is being identified Green flashing On 400 ms Off 100 ms Physical disk rebuilding Amber flashing On 150 ms Off 150 ms Physical disk failed Flashing green amber and off Green On Physical disk failure predicted SMART 500 ms Amber On 500 ms Off 1000 ms Flashing green amber and off Green
136. er mpath lt x gt _part lt y gt where lt x gt is the letter s assigned to the multipathing device and lt y gt is the partition number K NOTE After creating a partition on a multipathing device all 1 0 operations including file system creation raw I O and file system I 0 must be done through the partition node and not through the multipathing device nodes Create a file system on a Device Mapper Partition Use the standard mkfs command to create the file system on the newly created Device Mapper partition For example mkfs t lt filesystem type gt dev mapper lt partition node gt where lt partition node gt is the partition on which the file system is created Mount a Device Mapper Partition Use the standard mount command to mount the Device Mapper partition as shown below mount dev mapper lt partition node gt lt mounting point gt Ready For Use The newly created virtual disks created on the MD3200i Series array are now setup and ready to be used Future reboots automatically find multipathing devices along with their partitions 182 Configuration Device Mapper Multipath for Linux K NOTE To ensure data integrity protection reboot a Linux host server attached to an MD3200i Series storage array using the procedure given below Linux Host Server Reboot Best Practices Its is recommended that you follow the procedures shown below when rebooting your Linux host server using Device Mappe
137. erform troubleshooting and simple repairs as authorized in your product documentation or as directed by the online or telephone service and support team Damage due to servicing that is not authorized by Dell is not covered by your warranty Read and follow the safety instructions that came with the product A CAUTION It is recommended that you turn off the host server before turning off the array to prevent loss of data 1 Locate the faulty power supply and determine the status of the LEDs Ifthe AC power LED is not lit check the power cord and power source into which the power supply is plugged e Connect another device to the power source to verify if it is working e Connect the cable to a different power source e Replace the power cable If the problem is not resolved see Getting Help on page 259 Ifthe DC power LED is not lit verify that the power switch is turned on If the power switch is turned on see step 2 e Ifthe power supply s fault indicator is lit see Getting Help on page 259 A CAUTION Power supply cooling fan modules are hot swappable The array can operate on a single power supply however both modules must be installed to ensure proper cooling A single power supply cooling fan module can be removed from a powered on array for a maximum period of five minutes Beyond that time the array may automatically shut down to prevent damage 2 Reseat the power supply by removing and reinstalling it
138. ert Disables status icon appears next to the parent node in the tree view Adding a Storage The Contacting Storage Array icon is shown in Array the Tree view and Table view until the current status of each managed storage array is known The Contacting Storage Array icon is shown in the EMW Status Bar and the AMW Status Bar and the tooltip shows Contacting Storage arrays As each storage array is contacted its current status is obtained and shown in the Tree view and Table view The applicable statuses are the Optimal Needs Attention Fixing or Unresponsive Adding a Storage 6 No problems were encountered while adding the Array OK storage array MDSM software continues to check for any status change events Adding a Storage pra Appears only when an error occurs Array Error 228 Troubleshooting Your Storage Array Software NOTE MDSM may take a few minutes to update a status change to Unresponsive or from Unresponsive A status change from or to Unresponsive depends on the network link to the storage array All other status change updates faster Storage Array Support Data You can gather various types of inventory status and performance data that can help troubleshoot any problem with the storage array All the files are compressed into a single archive in a zipped file format You can forward the archive file to your Technical Support representative for troubleshooting and further analysis To generate the support
139. ess cache mirroring is disabled Write Through Cache In write through cache data is written to the physical disk before completion status is returned to the host operating system Write through cache is considered more robust than write back cache since a power failure is less likely to cause loss of data The RAID controller automatically switches to write through if cache mirroring is disabled or if the battery is missing or has a fault condition 36 Planning RAID Controller Modules Planning MD32001 Series Storage Array Terms and Concepts This chapter explains terms and concepts used for configuration and operation of MD3200i Series storage arrays Physical Disks Virtual Disks and Disk Groups Physical disks in your storage array provide the physical storage capacity for your data Before you can begin writing data to the storage array you must configure the physical storage capacity into logical components called disk groups and virtual disks A disk group is a set of physical disks upon which multiple virtual disks are created The maximum number of physical disks supported in a disk group is 96 drives for RAID 0 RAID 1 and RAID 10 and 30 drives for RAID 5 and RAID 6 You can create disk groups from unconfigured capacity on your storage array A virtual disk is a partition in a disk group that is made up of contiguous data segments of the physical disks in the disk group A virtual disk consists of data segments fro
140. et K NOTE The Target CHAP secret must be at least 12 characters and up to 57 characters Enter the exact same target CHAP secret in Confirm target CHAP secret K NOTE If you do not want to create a CHAP secret you can generate a random CHAP secret automatically To generate a random CHAP secret click Generate Random CHAP Secret Click OK K NOTE You can select the None and CHAP atthe same time for example when one initiator might not have CHAP and the other initiator has only CHAP selected 81 Configuration Using iSCSI Entering Mutual Authentication Permissions Mutual authentication or two way authentication is a way for a client or a user to verify themselves to a host server and for the host server to validate itself to the user This validation is accomplished in such a way that both parties are sure of the other s identity To add mutual authentication permissions 1 In the AMW select the Setup tab 2 Select Manage iSCSI Settings The Manage iSCSI Settings window is displayed Select the Mutual Authentication tab 4 Select an initiator in the Select an Initiator area The initiator details appear 5 Click CHAP Secret to enter the initiator CHAP permissions in the dialog that appears 6 Click OK 7 Click OK in the Manage iSCSI Settings window For more information see the PowerVault Modular Disk Storage Manager online help topics Creating CHAP Secrets When you set up an authentication meth
141. f IO s per second IOP Input output per second or one completed I O transaction Maximum IO second Maximum recorded IOP from last start time For more information see the online help topics 58 Planning MD3200i Series Storage Array Terms and Concepts Configuration Overview Dell PowerVault Modular Disk Storage Manager MDSM online help contains information on the how to use the MDSM application to perform the configuration and management tasks described in this document You can access online help by clicking Help located at the top right corner of MDSM interface See the MD3200i and MD3220i Storage Array s Deployment Guide for information on installing the MDSM K NOTE MDSM supports MD3000i and MD3200i storage arrays and can automatically detect both these storage arrays User Interface The Storage Manager screen is divided into two primary windows e Enterprise Management Window EMW The EMW provides high level management of the storage arrays You can launch the Array Management Window from the EMW e Array Management Window AMW The AMW provides management functions for a single storage array You can launch more than one AMW at the same time to manage different storage arrays The EMW and the AMW consist of the following e The title bar at the top of the window shows the name of the application e Beneath the title bar is the menu bar You can select menu options from the menu bar to perfor
142. ff it indicates either there is no power or the AC input voltage is not within the limit 4 Power connector Connect the external power supply to this connector 5 Power switches 2 The power switch controls the power supply output to the enclosure 30 Planning About Your Storage Array Planning RAID Controller Modules RAID Controller Modules The RAID controller modules provide high performance advanced virtual disk configuration and fault tolerant disk subsystem management Each RAID controller module contains 2 GB of cache that is mirrored with the other controller s cache for high availability and is protected by a battery powered cache offload mechanism RAID controller modules provide the following data path and enclosure management functions e Monitoring and controlling enclosure environment elements temperature fans power supplies and enclosure LEDs e Controlling access to the physical disks e Communicating enclosure attributes and states to the host server and management station Each RAID controller module has multiple iSCSI IN ports for host access The ports provide redundant host connections and support a high availability storage environment Various configurations can be utilized in both single controller simplex and dual controller duplex modes to connect the storage enclosure to hosts depending on specific redundancy needs For information on cabling see the MD3200i and MD3220i Series storage
143. ffic to controlled load applications such as streaming multimedia and business critical traffic e 5 6 delay sensitive applications such as interactive video and voice 7 highest priority reserved for network critical traffic do not use with the MD3200i TCP Listening Port The default Transmission Control Protocol TCP listening port is 3260 Jumbo Frames The maximum transmission units MTUs It can be set between 1501 and 9000 bytes per frame If the Jumbo Frames are disabled the default MTU is 1500 bytes per frame K NOTE Changing any of these settings resets the iSCSI port 1 0 is interrupted to any host accessing that port You can access the 1 0 automatically after the port restarts and the host logs in again Configuration Using iSCSI 87 Viewing or Ending an iSCSI Session You might want to end an iSCSI session for the following reasons e Unauthorized access If an initiator is logged on whom you consider to not have access you can end the iSCSI session Ending the iSCSI session forces the initiator to log off the storage array The initiator can log on if None authentication method is available e System downtime TIf you need to turn off a storage array and initiators are logged on you can end the iSCSI session to log off the initiators from the storage array To view or end an iSCSI session 1 In the AMW toolbar select Storage Array iSCSI End Sessions 2 Select the iSCSI session that you want to
144. formation see the PowerVault Modular Disk Storage Manager online help topics Storage Array Performance During Virtual Disk Copy The following factors contribute to the overall performance of the storage array e T O activity e Virtual disk RAID level e Virtual disk configuration Number of drives in the virtual disk groups e Virtual disk type Snapshot virtual disks might take more time to copy than standard virtual disks During a virtual disk copy resources for the storage array are diverted from processing I O activity to completing a virtual disk copy This affects the overall performance of the storage array When you create a new virtual disk copy you define the copy priority to determine how much controller processing time is diverted from I O activity to a virtual disk copy operation Setting Copy Priority You can use the Copy Manager to select the rate at which a virtual disk copy completes for a selected copy pair You can change the copy priority for a copy pair at any of these times 170 Configuration Premium Feature Virtual Disk Copy Before the virtual disk copy begins While the virtual disk copy has a status of In Progress When you re create a virtual disk copy To set copy priority 1 In the AMW select Virtual Disk Copy Copy Manager The Copy Manager window is displayed In the table select one or more copy pairs Select Change Copy Priority The Change Copy Priority window is displayed In th
145. g Devices K NOTE Using or modifying any nodes other than the multipathing device nodes can result in array or file system problems including loss of communication with the array and corruption of the file system Avoid accessing any device other than the multipathing device K NOTE After creating a partition on a multipathing device all 1 0 operations including file system creation raw I O and file system 1 0 must be done through the partition node and not through the multipathing device nodes Prerequisite Steps The following tasks must be completed before proceeding For more information about steps 1 3 see the MD3200i and MD3220i storage arrays Deployment Guide For more information about step 4 see Creating Virtual Disks on page 106 1 Install the host software from the MD3200i Series resource media Insert the Resource media in the system to start the installation of Modular Disk Storage Manager MDSM and Modular Disk Configuration Utility MDCU K NOTE Red Hat install of 5 x requires a remount of the DVD media to make contents executable 2 Reboot when prompted by the install program tThe installation program prompts for and needs a reboot at completion of the installation 3 Configure using MDCU After the host server has rebooted the MDCU automatically starts and is present on the desktop This utility allows for quick and easy configuration of new and or existing MD3200i Series storage arrays present on yo
146. g its metadata Hot Spare Operation When a physical disk fails the virtual disk automatically rebuilds using an available hot spare When a replacement physical disk is installed data from the hot spare is copied back to the replacement physical disk This function is called copy back By default the RAID controller module automatically configures the number and type of hot spares based on the number and capacity of physical disks in your system A hot spare may have the following states e A standby hot spare is a physical disk that has been assigned as a hot spare and is available to take over for any failed physical disk e An in use hot spare is a physical disk that has been assigned as a hot spare and is currently replacing a failed physical disk Hot Spare Drive Protection You can use a hot spare physical disk for additional data protection from physical disk failures that occur in a RAID Level 1 or RAID Level 5 disk group If the hot spare physical disk is available when a physical disk fails the RAID controller module uses redundancy data to reconstruct the data from Configuration Disk Groups and Virtual Disks 123 the failed physical disk to the hot spare physical disk When you have physically replaced the failed physical disk a copyback operation occurs from the hot spare physical disk to the replaced physical disk If there are secure disk groups and security capable disk groups in the storage array the hot spare
147. ge environment e Ifyou use the virtual disk in a single user large I O environment such as for multimedia application storage performance can be optimized when a single I O request is serviced with a single data stripe the segment size multiplied by the number of physical disks in the disk group used for data storage In this case multiple disks are used for the same request but each disk is only accessed once Virtual Disk Capacity Expansion When you configure a virtual disk you select a capacity based on the amount of data you expect to store However you may need to increase the virtual disk capacity for a standard virtual disk by adding free capacity to the disk group This creates more unused space for new virtual disks or to expand existing virtual disks Disk Group Expansion Because the storage array supports hot pluggable physical disks you can add two physical disks at a time for each disk group while the storage array remains online Data remains accessible on virtual disk groups virtual disks and physical disks throughout the operation The data and increased unused free space are dynamically redistributed across the disk group RAID characteristics are also reapplied to the disk group as a whole Disk Group Defragmentation Defragmenting consolidates the free capacity in the disk group into one contiguous area Defragmentation does not change the way in which the data is stored on the virtual disks Disk Group
148. ge Array The LEDs blink on the physical disks in the storage array 2 After locating the storage array click OK The LEDs stop blinking 3 If the LEDs do not stop blinking select Storage Array Blink Stop All Indications A confirmation message is displayed 4 Click OK Naming or Renaming Storage Arrays Each storage array should be assigned a unique up to 30 character alphanumeric name A name can consist of letters numbers and the special characters underscore _ dash and pound sign No other special characters are allowed To rename a selected storage array 1 68 Perform one of these actions Inthe AMW Setup tab select Rename Storage Array Inthe EMW Devices tab Tree view select Edit Rename e Inthe EMW Devices tab Table view select Edit Rename e Inthe EMW Devices tab Tree view right click on the desired array icon and select Rename The Name Rename Storage Arrays dialog appears Select the relevant storage array from the Select storage array table If you do not know the name or physical location of the storage array click Blink After locating the storage array click OK to turn off the LEDs The name of the storage array appears in the Storage array name In Storage array name type the new name of the storage array If applicable add a comment for the storage array in Additional comment Click Apply A message is displayed warning you about the implications of changing the stora
149. ge array name Configuration About Your Storage Array 5 Click Yes The new storage array name appears in the Select storage array table 6 Repeat step 2 through step 4 to name or rename additional storage arrays K NOTE Avoid arbitrary names or names that might lose meaning in the future Setting a Password You can configure each storage array with a password to protect it from unauthorized access MDSM prompts for the password when an attempt is made to change the storage array configuration such as when a virtual disk is created or deleted View operations do not change the storage array configuration and do not require a password You can create a new password or change an existing password K NOTE It is recommended that you use a long password with at least 15 alphanumeric characters to increase security To set a new password or change an existing password 1 Select the relevant storage array and navigate to the AMW for that storage array See Array Management Window on page 61 The AMW for the selected storage array is displayed 2 Inthe AMW perform one of these actions e Select the storage array in the Logical pane and then select Storage Array Set Password e Select the Setup tab and then click Set a Storage Array Password In the AMW select the Logical tab right click and select Set Password The Set Password dialog appears 3 If you are resetting the password type the Current password K
150. gineering GR 1 and the default repository name would be Host Software Engineering GR R1 Configuration Premium Feature Snapshot Virtual Disks 155 Snapshot Repository Capacity If you receive a warning that the capacity for the snapshot repository virtual disk is approaching its threshold you can increase the capacity of a snapshot repository virtual disk by using one of the following methods e Use the free capacity available on the disk group of the snapshot repository virtual disk e Add unconfigured capacity to the disk group of the snapshot repository virtual disk Use this option when no free capacity exists on the disk group You cannot increase the storage capacity of a snapshot repository virtual disk if the snapshot repository virtual disk has any one of the following conditions e The virtual disk has one or more hot spare drives in use e The virtual disk has a status other than Optimal e Any virtual disk in the disk group is in any state of modification e The controller that has ownership of this virtual disk is currently adding capacity to another virtual disk Each controller can add capacity to only one virtual disk at a time e No free capacity exists in the disk group e No unconfigured capacity is available to add to the disk group K NOTE You can add a maximum of two physical disks at one time to increase snapshot repository virtual disk capacity To expand the snapshot repository virtual disk from M
151. gned physical disks and select Create Virtual Disk from the pop up menu e To create a secure virtual disk On the Physical tab select one or more unassigned security capable physical disks of the same physical disk type and select Virtual Disk Create Alternatively you can right click the unassigned security capable physical disks and select Create Virtual Disk from the pop up menu If you chose an Unconfigured Capacity node or unassigned physical disks to create a virtual disk the Disk Group Required dialog appears Click Yes and create a disk group by using the Create Disk Group Wizard The Create Virtual Disk Wizard appears after you create the disk group If you chose a Free Capacity node the The Introduction Create Virtual Disk window is displayed Click Next The Specify Capacity Name window is displayed Select the appropriate unit for memory in Units and enter the capacity of the virtual disk in New virtual disk capacity Enter an up to 30 character name for the virtual disk in Virtual disk name In Advanced virtual disk parameters you can select e Use recommended settings Configuration Disk Groups and Virtual Disks 107 e Customize settings 6 Click Next 7 Inthe Customize Advanced Virtual Disk Parameters window select the appropriate Virtual Disk I O characteristics type You can select e File system typical e Database e Multimedia e Custom K NOTE If you select Custom you must sele
152. guring Host Access 93 Hot Spare Physical Disks 121 the iSCSI Host Ports 85 Configuring Alert Notifications SNMP 77 Contacting Dell 259 Index 261 contacting Dell 259 control panel installing 216 removing 215 Copy Manager 169 D Defining a Host 94 Dell contacting 259 Disk Group Creating 104 Expansion 137 Export 139 Exporting 140 Import 140 Locating 106 Migration 139 Disk Group and Virtual Disk Expansion 137 Disk Group Operations 45 Defragmentation 6 Expansion 6 Limit 46 RAID Level Migration 45 Segment Size Migration 45 Virtual Disk Capacity Expansion 6 Disk Groups and Virtual Disks Creating 103 Download NVSRAM Firmware 190 Physical Disk Firmware 192 RAID Controller and NVSRAM Firmware 188 RAID Controller and NVSRAM Packages 187 RAID controller module Firmware 194 drive carrier hard drive 202 E Edit Remove or Rename Host Topology 90 Enclosure Loss Protection 124 Entering Mutual Authentication Permissions 82 Enterprise Management Window 60 Event Monitor 91 Enabling or Disabling 91 Linux 92 Windows 92 F Failed RAID Controller Module 168 Features and Indicators Front Panel 24 Firmware Downloads 187 Firmware Inventory 221 View 221 Index 262 Free Capacity 138 front bezel installing 198 removing 198 H hard drive drive carrier 202 installing 202 removing 200 Hard Drive Indicator
153. hanged I O to the virtual disk is now directed through this I O path You are finished with this procedure K NOTE The virtual disk might not use the new 1 0 path until the multi path driver reconfigures and recognizes the new path This action usually takes less than five minutes To change the RAID controller module ownership of a disk group perform these steps a Select the Logical tab b Select the disk group c Select Disk Group Change Ownership Preferred Path Alternatively you can right click the disk group and select Change gt Ownership Preferred Path from the pop up menu d Select the RAID controller module Configuration Disk Groups and Virtual Disks VAN CAUTION Possible loss of data access Changing ownership at the disk group level causes every virtual disk in that disk group to transfer to the other RAID controller module and use the new 1 0 path If you do not want to set every virtual disk to the new path change ownership at the virtual disk level instead e Click Yes The ownership of the disk group is changed I O to the disk group is now directed through this I O path You are finished with this procedure K NOTE The disk group might not use the new 1 0 path until the multi path driver reconfigures and recognizes the new path This action usually takes less than five minutes Changing the RAID Level of a Disk Group Use the Change gt RAID Level option to change the RAID level on a selected di
154. he Control Panel PowerVault MD3220i 1 control panel 2 release pin Installing the Control Panel 1 2 216 Align the control panel with the slot on the array Slide the control panel into the array until The release tab clicks into place in PowerVault MD3200i See Figure 16 13 The release pin clicks into place in PowerVault MD3220i See Figure 16 14 Replace the hard drives in their respective slots See Installing a Hard Drive on page 202 Connect all the power cables to the array Turn on the array and the host server Management Installing Array Components Backplane A WARNING Whenever you need to lift the array get others to assist you To avoid A injury do not attempt to lift the array by yourself CAUTION Many repairs may only be done by a certified service technician You should only perform troubleshooting and simple repairs as authorized in your product documentation or as directed by the online or telephone service and support team Damage due to servicing that is not authorized by Dell is not covered by your warranty Read and follow the safety instructions that came with the product Removing the Backplane 1 2 3 4 10 11 Turn off the array and disconnect it from the electrical outlet Disconnect all the cables connected to the array Remove the hard drives See Removing a Hard Drive on page 200 Remove the RAID controller modules See Removing a RAID Controlle
155. he backup virtual disk This functionality enables you to unmap the original source virtual disk from its host server then map the backup virtual disk to the same host server Ensure that you record the LUN used to provide access to the source virtual disk You need this information when you define a host server to virtual disk mapping for the target backup virtual disk Also be sure to stop all I O activity to the source virtual disk before beginning the virtual disk recovery procedure Using Snapshot and Disk Copy Together You can use the Snapshot Virtual Disk and Virtual Disk Copy premium features together to back up data on the same storage array or to restore the data on the snapshot virtual disk to its original source virtual disk Planning MD3200i Series Storage Array Terms and Concepts 53 You can copy data from a virtual disk in one of two ways e By taking a point in time snapshot of the data e By copying the data to another virtual disk using a virtual disk copy You can select a snapshot virtual disk as the source virtual disk for a virtual disk copy This configuration is one of the best ways you can apply the snapshot virtual disk feature since it enables complete backups without any impact to the storage array I O You cannot use a snapshot repository virtual disk as a source virtual disk or as a target virtual disk in a virtual disk copy If you select the source virtual disk as the target virtual disk of a virtual di
156. here is Activity on 1Gbps connection Off when 1Gbps link is down 12 Controller fault LED Lights amber when controller fault detected Off when controller operating normally 13 System identification Blinks blue when system identification switch push LED button on enclosure front panel is pressed 14 Cache active or cache Lights green when On board controller memory offload LED contains data If AC power fails this LED changes to indicate Cache Offload status If the password reset function has successfully changed the password this LED flashes on and off briefly 15 Battery fault Lights amber when battery backup unit or battery has failed Off when battery backup unit is operating normally 16 Password reset switch Activating this switch deletes the password 17 MAC address label Provides MAC addresses of iSCSI host ports and the management port Planning RAID Controller Modules 33 Item Component Function 18 Management port Lights green when ethernet connection is operating at speed LED 1000 Mbps Lights amber when ethernet connection is operating at 100 Mbps Off when ethernet connection is operating at 10 Mbps or is not active 19 Management port Lights green when ethernet connection is active activity LED Off when ethernet connection is not active RAID Controller Module Additional Features Battery Backup Unit Each RAID controller contains a two cell lithium ion nanopolymer battery backup unit BBU
157. hot virtual disk This in turn can result in data loss on the source virtual disk or an inaccessible snapshot K NOTE For details on mapping the snapshot virtual disk to the secondary node refer to the Dell PowerVault M D3200i and M D3220i Storage Arrays W ith Microsoft Windows Server Failover Clusters on support dell com manuals K NOTE You can create concurrent snapshots of a source virtual disk on both the source disk group and on another disk group Before creating a Snapshot Virtual Disk note that The following types of virtual disks are not valid source virtual disks Configuration Premium Feature Snapshot Virtual Disks 147 K e Snapshot repository virtual disks e Snapshot virtual disks e Target virtual disks that are participating in a virtual disk copy K NOTE Virtual Disk Copy is an Advanced Premium feature You cannot create a snapshot of a virtual disk that contains unreadable sectors You must satisfy the requirements of your host operating system for creating snapshot virtual disks Failure to meet the requirements of your host operating system results in an inaccurate snapshot of the source virtual disk or the target virtual disk in a virtual disk copy NOTE Before you create a new snapshot of a source virtual disk stop any data access I O activity or suspend data transfer to the source virtual disk to ensure that you capture an accurate snapshot of the source virtual disk Close
158. ialog appears Do not attempt another operation when the Download Physical Disk Progress dialog is shown To download Physical Disk Firmware 1 From the AMW select Advanced Maintenance Download Physical Disk The Download Physical Disk Introduction window appears Click Next The Download Physical Disk Firmware Add Packages window is displayed Management Firmware Downloads 193 7 In the Selected Packages area click Add Navigate to the location of the packages and click OK The selected package is added to the Packages to be transferred area Click Next The Download Physical Disk Firmware Select Physical Disks window is displayed In the Compatible Physical Disks tab select the appropriate physical disks or Select all the physical disks The Confirm Download dialog is displayed Type yes and click OK The Download Physical Disk Firmware Progress window is displays the progress of physical disk firmware download After the firmware download is complete click Close For more information see the PowerVault Modular Disk Storage Manager online help topics Downloading MD1200 Series Expansion Module EMM Firmware 2 K NOTE Do not make any configuration changes to the storage array while you are downloading the expansion enclosure EMM firmware Doing so could cause the firmware download to fail damage the storage array or cause loss of data accessibility NOTE Due to a limitation with L
159. ical 192 Management Firmware Downloads disk called DACstore DACstore and the physical disk firmware enable easier reconfiguration and migration of the physical disks The physical disk firmware performs these functions The physical disk firmware records the location of the physical disk in an expansion enclosure If you take a physical disk out of an expansion enclosure you must insert it back into the same physical disk slot or the physical disk firmware cannot communicate with the RAID controller module or other storage array components RAID configuration information is stored in the physical disk firmware and is used to communicate with other RAID components K NOTE Risk of application errors Downloading the firmware could cause application errors Keep these important guidelines in mind when you download firmware to avoid the risk of application errors Es Downloading firmware incorrectly could result in damage to the physical disks or loss of data Perform downloads only under the guidance of your Technical Support representative Stop all I O to the storage array before the download Make sure that the firmware that you download to the physical disks are compatible with the physical disks that you select Do not make any configuration changes to the storage array while downloading the firmware NOTE Downloads can take several minutes to complete During a download the Download Physical Disk Progress d
160. ice and support team Damage due to servicing that is not authorized by Dell is not covered by your warranty Read and follow the safety instructions that came with the product CAUTION It is recommended that you turn off the host server before turning off the expansion enclosure to prevent loss of data If the EMM status LED is solid or blinking amber 2 or 4 times per sequence a Turm off the server b Remove the EMM and verify that the pins on backplane and EMM are not bent See Removing an EMM in the MD1200 and MD1220 Storage Enclosures Hardware Owner s Manual Troubleshooting Your Array 251 d e f Reseat the EMM module and wait for 30 seconds See Removing an EMM in the MD1200 and MD1220 Storage Enclosures Hardware Owner s Manual Turn on the server Check the EMM status LED If the LED does not turn Green replace the EMM If the problem is not resolved see Getting Help on page 259 IfEMM status LED is blinking amber 5 times per sequence update the firmware to the latest supported firmware on both the EMMs For more information about downloading the latest firmware see Management Firmware Downloads on page 187 e Ifthe link status LEDs are not green a b c Turn off the server Reseat the cables on the expansion enclosure and the server Turn on the expansion enclosures and then the storage array and wait until the system is fully booted Turn on the server Check the link status LED
161. icks into place See Figure 16 11 2 Connect the power cable to the power supply cooling fan module and plug the cable into a power outlet 3 Secure the power cable using the Velcro strap See Figure 16 12 Figure 16 12 Securing the Power Cable 1 Velcro strap A CAUTION When connecting the power cable secure the cable with the Velcro strap K NOTE If the array is powered on all the power supply LEDs remain off until the AC power cable is connected to the power supply cooling fan module and the power switch is turned on 4 Turn on the power supply cooling fan module 214 Management Installing Array Components Control Panel Removing the Control Panel 1 Tur off the array and host server 2 Disconnect all the power cables connected to the array 3 Remove the hard drives from slots 0 to 2 in PowerVault MD3200i slots 0 to 5 in PowerVault MD3220i See Removing a Hard Drive on page 200 K NOTE Mark each hard drive with it s slot position as you remove it 4 Slide the control panel out of the chassis after Pushing the release tab toward the front of the array in PowerVault MD3200i See Figure 16 13 Pulling the release pin toward the front of the array in PowerVault MD3220i See Figure 16 14 Figure 16 13 Removing and Installing the Control Panel PowerVault MD3200i 1 control panel 2 release tab Management Installing Array Components 215 Figure 16 14 Removing and Installing t
162. ifferent storage array You can also export a disk group so that you can store the data offline K NOTE During the export process before the disk group is imported you lose access to the data on the exported disk group K NOTE You must export a disk group before you move the disk group or import the disk group Export Disk Group The export disk group operation prepares the physical disks in the disk group for removal You can remove the physical disks for offline storage or you can import the disk group to a different storage array After you complete the export disk group operation all of the physical disks are offline Any associated virtual disks or free capacity nodes are no longer shown in MDSM Non Exportable Components You must remove or clear any non exportable settings before you can complete the export disk group procedure Remove or clear the following settings e Persistent reservations e Host to virtual disk mappings e Virtual disk copy pairs Snapshot virtual disks and snapshot repository virtual disks e Remote mirror pairs e Mirror repositories Exporting a Disk Group On the source storage array 1 Save the storage array configuration Configuration Disk Groups and Virtual Disks 139 2 Stop all I O and unmount or disconnect the file systems on the virtual disks in the disk group 3 Back up the data on the virtual disks in the disk group 4 Locate the disk group and label the physical disks
163. iguration Premium Feature Snapshot Virtual Disks 149 150 Snapshot Virtual Disk Name A user specified name that helps you associate the snapshot virtual disk to its corresponding snapshot repository virtual disk and source virtual disk Snapshot Repository Virtual Disk Name A user specified name that helps you associate the snapshot repository virtual disk to its corresponding snapshot virtual disk and source virtual disk Capacity Allocation This parameter allows you to choose where to create the snapshot repository virtual disk You can allocate capacity by using one of the following methods Use free capacity on the same disk group where the source virtual disk resides Use free capacity on another disk group Use unconfigured capacity and create a new disk group for the snapshot repository virtual disk Dell recommends placing the snapshot repository virtual disk within the disk group of the source virtual disk This ensures that if drives associated with the disk group are moved to another storage array all the virtual disks associated with the snapshot virtual disk remain in the same group Snapshot Repository Virtual Disk Capacity The snapshot repository virtual disk capacity is expressed as a percentage of the source virtual disk capacity The maximum percentage allowed is 120 percent Percent Full When the snapshot repository virtual disk reaches the user specified repository full percentage
164. in an array where striping is implemented For example a four disk group with disk striping has a stripe width of four K NOTE Although disk striping delivers excellent performance striping alone does not provide data redundancy Virtual Disk Operations Virtual Disk Initialization Every virtual disk must be initialized Initialization can be done in the foreground or the background A maximum of four virtual disks can be initialized concurrently on each RAID controller module Background Initialization The storage array executes a background initialization when the virtual disk is created to establish parity while allowing full host server access to the virtual disks Background initialization does not run on RAID 0 virtual disks The background initialization rate is controlled by MDSM To change the rate of background initialization you must stop any existing background initialization The rate change is implemented when the background initialization restarts automatically Foreground Initialization The storage array supports foreground initialization for virtual disks All access to the virtual disk is blocked during foreground initialization During foreground initialization zeros 0x00 are written to every sector of the virtual disk The virtual disk is available after foreground initialization is completed Consistency Check A consistency check verifies the correctness of data in a redundant array RAID levels 1 5
165. in the File selection area and click OK By default only downloadable files that are compatible with the current storage array configuration appear When you select a file in the File selection area applicable attributes if any of the file appear in the NVSRAM File information area The attributes indicate the version of the NVSRAM file Click Transfer K NOTE If the file selected is not valid or is not compatible with the current storage array configuration the File Selection Error dialog appears Click OK to close it and choose a compatible NVSRAM file Click Yes in the Confirm Download dialog The download starts Perform one of these actions Select Tools Upgrade RAID Controller Module Firmware e Select the Setup tab and click Upgrade RAID Controller Module Firmware The Upgrade RAID Controller Module Firmware window appears The Storage array pane lists the storage arrays The Details pane shows the details of the storage array that is selected in the Storage array pane In the Storage array pane select the storage array for which you want to download the NVSRAM firmware You can select more than one storage array Management Firmware Downloads 191 10 11 12 13 14 K NOTE The Details pane shows the details of only one storage array at a time If you select more than one storage array in the Storage array pane the details of the storage arrays are not shown in the Details pane Click
166. ing for the pass phrase The pass phrase must meet the following criteria It must be between eight and 32 characters long e It must contain at least one uppercase letter e It must contain at least one lowercase letter e It must contain at least one number e It must contain at least one non alphanumeric character for example lt gt t The pass phrase that you enter is masked In Confirm pass phrase re enter the exact string you entered in Pass phrase Make a record of the pass phrase you entered and the security key identifier it is associated with You need this information for later secure operations Click Change Key Make a record of the security key identifier and the file name from the Change Security Key Complete dialog and click OK Configuration Disk Groups and Virtual Disks Saving a Security Key You save an externally storable copy of the security key when the security key is first created and each time it is changed You can create additional storable copies at any time To save a new copy of the security key you must provide a pass phrase The pass phrase you choose does not need to match the pass phrase used when the security key was created or last changed The pass phrase is applied to the particular copy of the security key you are saving To save the security key for the storage array 1 In the AMW toolbar select Storage Array Physical Disk Security Save Security Key File The Save
167. ing the Simple Path You can choose the simple path to create a snapshot virtual disk if the disk group of the source virtual disk has the required amount of free space A snapshot repository virtual disk requires a minimum 8 MB of free capacity The destination of a snapshot repository virtual disk is determined based on the free capacity available in the disk group If 8 MB of free capacity is not available in the disk group of the source virtual disk the Create Snapshot Virtual Disks feature defaults to the advanced path For more information see Creating a Snapshot Virtual Disk Using the Advanced Path on page 149 In the advanced path option you can choose to place the snapshot repository virtual disk in another disk group or you can use unconfigured capacity on the storage array to create a new disk group About the Simple Path Using the simple path you can specify e Snapshot Virtual Disk Name A user specified name that helps you associate the snapshot virtual disk to its corresponding snapshot repository virtual disk and source virtual disk 146 Configuration Premium Feature Snapshot Virtual Disks e Snapshot Repository Virtual Disk Name A user specified name that helps you associate the snapshot repository virtual disk to its corresponding snapshot virtual disk and source virtual disk e Snapshot Repository Virtual Disk Capacity The snapshot repository virtual disk capacity is expressed as a percentage of the so
168. inux expansion enclosure EMM firmware updates must be performed using out of band management only Failure to do so may result in the host server becoming unresponsive and it may require a reboot You can transfer a downloadable firmware file to the expansion enclosure EMM in the expansion enclosures attached to the storage array A CAUTION Risk of possible loss of data or risk of damage to the storage array 194 Downloading the expansion enclosure EMM firmware incorrectly could result in loss of data or damage to the storage array Perform downloads only under the guidance of your Technical Support representative Management Firmware Downloads VAN CAUTION Risk of making expansion enclosure EMM unusable Do not make any configuration changes to the storage array while downloading expansion enclosure EMM firmware Doing so could cause the firmware download to fail and make the selected expansion enclosure unusable 1 Perform one of these actions e Inthe AMW select Advanced Maintenance gt Download EMM Firmware Select the Support tab and click Download Firmware In the dialog that appears select the EMM firmware and click OK The Download Environmental EMM Firmware dialog appears 2 In the Select enclosures area either select each expansion enclosure to which you want to download firmware or select the Select All to select all of the expansion enclosures in the storage array Each selected expansion enclos
169. ion on creating virtual disks see Creating Virtual Disks on page 106 Configuration Disk Groups and Virtual Disks 105 Locating a Disk Group You can physically locate and identify all of the physical disks that comprise a selected disk group An LED blinks on each physical disk in the disk group To locate a disk group 1 2 5 In the AMW select the Logical tab Select the appropriate disk group and from the toolbar select Disk Group Blink The LEDs for the selected disk group blink After locating the disk group click OK The LEDs stop blinking If the LEDs for the disk group do not stop blinking from the toolbar in AMW select Storage Array Blink Stop All Indications If the LEDs successfully stop blinking a confirmation message appears Click OK Creating Virtual Disks Keep these important guidelines in mind when you create a virtual disk Many hosts can have 256 logical unit numbers LUNs mapped per storage partition but the number varies per operating system After you create one or more virtual disks and assign a mapping you must register the virtual disk with the operating system In addition you must make sure that the host recognizes the mapping between the physical storage array name and the virtual disk name Depending on the operating system run the host based utilities hot_add and SMdevices If the storage array contains physical disks with different media types or different interface ty
170. irmware or the NVSRAM You can select more than one storage array K NOTE The Details pane shows the details of only one storage array at a time If you select more than one storage array in the Storage Array pane the details of the storage arrays are not shown in the Details pane Click Firmware in the Download area If you select a storage array that cannot be upgraded the Firmware button is disabled The Download Firmware dialog appears The current firmware version and the NVSRAM version of the selected storage arrays appear K NOTE If you select the storage arrays with different RAID controller module types that cannot be updated with the same firmware or NVSRAM file and click Firmware the Incompatible RAID Controller Modules dialog appears Click OK to close the dialog and select the storage arrays with similar RAID controller module types To locate the directory in which the file to download resides click Browse in the Select files area Management Firmware Downloads 189 13 14 15 16 17 18 The Select File dialog appears Select the file to download Click OK If you want to download the NVSRAM file with the RAID controller module firmware select Download NVSRAM file with firmware in the Select files area Any attributes of the firmware file appear in the Firmware file information area The attributes indicate the version of the firmware file Any attributes of the NVSRAM file appear in the
171. irtual disk is in Optimal or Disabled status 4 Remove the drive letter s of the source and if mounted virtual disk in Windows or unmount the virtual drive s in Linux to help guarantee a stable copy of the drive for the virtual disk If this is not done the copy operation reports that it has completed successfully but the copied data is not updated properly 172 Configuration Premium Feature Virtual Disk Copy 5 Follow any additional instructions for your operating system Failure to follow these additional instructions can create unusable virtual disk copies K NOTE If your operating system requires additional instructions you can find those instructions in your operating system documentation Recopying the Virtual Disk You can use the Copy Manager to create a new virtual disk copy for a selected source virtual disk and a target virtual disk Use this option when you have stopped a virtual disk copy and want to start it again or when a virtual disk copy has failed or completed The virtual disk copy starts over from the beginning e Possible loss of data The re copying operation overwrites existing data on the target virtual disk e Possible loss of data access While a virtual disk copy has a status of In Progress or Pending source virtual disks are available for read I O activity only Write requests are allowed after the virtual disk copy has completed Keep these guidelines in mind when re copying a virtual disk
172. is stored on reserved areas on the storage array disks It records configuration events and storage array component failures A WARNING Use this option only under the guidance of your Technical Support representative The event log stores approximately 8000 events before it replaces an event with a new event If you want to keep the events you may save them and clear them from the event log The event log window shows two types of event views e Summary view Shows an event summary in a table form e Detail view Shows details about a selected event To view the event log 1 In the AMW select Advanced Troubleshooting View Event Log The Event Log is displayed By default the summary view is displayed 2 To view the details of each selected log entry select View details A detail pane is added to the event log that contains detailed information about the log item You can view the details about a single log entry at a time 3 To save the event log click Save As The Save Events dialog is displayed navigate to the relevant folder enter the relevant file name and click Save 4 To erase all log entries from the event log click Clear All 5 To exit the event log click Close For more information see the PowerVault Modular Disk Storage Manager online help topics Troubleshooting Your Storage Array Software 231 Recovery Guru The Recovery Guru is a component of MDSM that diagnoses critical events on the storage array an
173. isabled A CAUTION Possible loss of data redundancy If the snapshot virtual disk is in Optimal status it is first disabled prior to being re created This action invalidates the current snapshot Keep these important guidelines in mind when you re create a snapshot virtual disk e To re create the snapshot virtual disks correctly follow the instructions for your operating system K NOTE Failing to follow these additional instructions could create unusable snapshot virtual disks For more information see the PowerVault M odular Disk Storage M anager online help topics e To use this option the snapshot virtual disk must be either in an Optimal status or Disabled status e When using this option the previously configured snapshot name parameters and snapshot repository virtual disk are used To recreate the snapshot virtual disk 1 In the AMW select the Logical tab select a snapshot virtual disk 2 Select Virtual Disk Snapshot Re create 3 Type yes and click OK Disabling a Snapshot Virtual Disk Disable a snapshot virtual disk if one of the following conditions exists e You do not need the snapshot now e You intend to re create the snapshot at a later time and want to retain the associated snapshot repository virtual disk so that you do not need to create it again e You want to maximize storage array performance by stopping copy on write activity to the snapshot repository virtual disk Configuration
174. ish The Completed window is displayed Click OK After creating one or more snapshot virtual disks mount the source virtual disk and restart the host application using that source virtual disk In the AMW select the Mappings tab assign mappings between the snapshot virtual disk and the host that accesses the snapshot virtual disk NOTE In some cases conflicts might result from mapping the same host to both a source virtual disk and its associated snapshot virtual disk This conflict depends on the host operating system and any virtual disk manager software in use To register the snapshot virtual disk with the host operating system run the host based hot_add utility To associate the mapping between the storage array name and the virtual disk name run the host based SMdevices utility NOTE If your operating system requires additional instructions you can find those instructions in your operating system documentation Creating a Snapshot Virtual Disk Using the Advanced Path About the Advanced Path Use the advanced path to choose whether to place the snapshot repository virtual disk on free capacity or unconfigured capacity and to change the snapshot repository virtual disk parameters You can select the advanced path regardless of whether you use free capacity or unconfigured capacity for the snapshot virtual disk Using the advanced path you can specify the following parameters for your snapshot virtual disk Conf
175. its capacity increased shows a status of Operation in Progress In addition the snapshot repository virtual disk shows its original capacity and the total capacity being added The virtual disk involved shows a reduction in capacity If all of the free capacity is used to increase the size of the virtual disk the Free Capacity node involved is removed from the Logical tab If unassigned physical disks are not available do you have empty slots in the expansion enclosures e Yes there are empty slots Insert new physical disks by using the information in the initial setup guide for your expansion enclosure Go to step 9 e No there are no empty slots Install another expansion enclosure and additional physical disks Use the information in the initial setup guides for your RAID controller module and your expansion enclosure Go to step 9 K NOTE The physical disks that you add must be of the same media type and interface type as the physical disks that already make up the disk group of the snapshot repository virtual disk Click Add Physical Disks Configuration Premium Feature Snapshot Virtual Disks 157 10 11 12 13 158 K NOTE The physical disks that appear has a capacity that is either the same size or larger than the capacity of the physical disks already being used by the disk group Select either a single physical disk to add or two physical disks to add Click Add The Add Physical Disks window clo
176. k copies with a status of In Progress exist any subsequent virtual disk copy has a status of Pending which stays until one of the eight virtual disk copies completes Virtual Disk Copy and Modification Operations If a modification operation is running on a source virtual disk or a target virtual disk and the virtual disk copy has a status of In Progress Pending or Failed the virtual disk copy does not take place If a modification operation is running on a source virtual disk or a target virtual disk after a virtual disk copy has been created the modification operation must complete before the virtual disk copy can start If a virtual disk copy has a status of In Progress any modification operation does not take place Create Copy Wizard The Create Copy Wizard guides you through 1 Selecting a source virtual disk from a list of available virtual disks 2 Selecting a target virtual disk from a list of available virtual disks 3 Setting the copy priority for the virtual disk copy When you have completed the wizard dialogs the virtual disk copy starts and data is read from the source virtual disk and written to the target virtual disk Operation in Progress icons appear on the source virtual disk and the target virtual disk while the virtual disk copy has a status of In Progress or Pending Configuration Premium Feature Virtual Disk Copy 167 Failed Virtual Disk Copy A virtual disk copy can fail due to these conditions e A read
177. k has a status of Optimal or Disabled by clicking the Summary tab and then clicking Disk Groups amp Virtual Disks 4 Follow any additional instructions for your operating system Failure to follow these additional instructions can create unusable snapshot virtual disks K NOTE If your operating system requires additional instructions you can find those instructions in your operating system documentation After your host server has been prepared see Creating a Snapshot Virtual Disk Using the Advanced Path on page 149 to create the snapshot using the advanced path 152 Configuration Premium Feature Snapshot Virtual Disks If you want to use a snapshot regularly such as for backups use the Disable Snapshot and Re create Snapshot options to reuse the snapshot Disabling and re creating snapshots preserves the existing virtual disk to host mappings to the snapshot virtual disk Creating the Snapshot Using the Advanced Path K NOTE Removing the drive letter of the associated virtual disk in Windows or unmounting the virtual drive in Linux helps to guarantee a stable copy of the drive for the Snapshot After first preparing the host server s as specified in the preceding procedure complete the following steps to create a virtual disk snapshot using the advanced path 1 Stop the host application accessing the source virtual disk and unmount the source virtual disk 2 Inthe AMW select the Logical tab select a valid so
178. l disk in the Select virtual disks to scan area and select Scan selected virtual disks To enable or disable the consistency check select either With consistency check or Without consistency check K NOTE A consistency check scans the data blocks in a RAID Level 5 virtual disk or a RAID Level 6 virtual disk and checks the consistency information for each block A consistency check compares data blocks on RAID Level 1 mirrored physical disks RAID Level 0 virtual disks have no data consistency l Configuration Disk Groups and Virtual Disks 8 Click OK Suspending the Media Scan You cannot perform a media scan while performing another long running operation on the disk drive such as reconstruction copy back reconfiguration virtual disk initialization or immediate availability formatting If you want to perform another long running operation you should suspend the media scan K NOTE A background media scan is the lowest priority of the long running operations To suspend a media scan 1 In the AMW select the Logical tab and select any virtual disk 2 Select Virtual Disk Change gt Media Scan Settings The Change Media Scan Settings window is displayed 3 Select Suspend media scan K NOTE This applies to all the virtual disks on the disk group 4 Click OK Configuration Disk Groups and Virtual Disks 143 144 Configuration Disk Groups and Virtual Disks Configuration Premium Feature Snapshot Virtu
179. ld only perform troubleshooting and simple repairs as authorized in your product documentation or as directed by the online or telephone service and support team Damage due to servicing that is not authorized by Dell is not covered by your warranty Read and follow the safety instructions that came with the product 1 Turn off the array and host server Disconnect all the cables connected to the array Remove the RAID controller module See Removing a RAID Controller Module on page 207 4 Open the RAID controller module See Opening the RAID Controller Module on page 208 5 Loosen the screw that secures the backup battery unit to the RAID controller module See Figure 16 10 6 Slide the backup battery unit in the direction of the arrow and lift it out of the RAID controller module See Figure 16 10 Figure 16 10 Removing and Installing the RAID Controller Module Backup Battery Unit 210 Management Installing Array Components 1 backup battery unit 2 screw Installing the RAID Controller Module Backup Battery Unit A CAUTION Many repairs may only be done by a certified service technician You should only perform troubleshooting and simple repairs as authorized in your product documentation or as directed by the online or telephone service and support team Damage due to servicing that is not authorized by Dell is not covered by your warranty Read and follow the safety instructions that came with the product 1 Align
180. lider bar to the desired priority 5 Click OK A message prompts you to confirm the change in the virtual disk modification priority 6 Click Yes 7 Click OK Changing the Virtual Disk Cache Settings You can specify the cache memory settings for a single virtual disk or for multiple virtual disks on a storage array Guidelines to change cache settings for a virtual disk e After opening the Change Cache Settings dialog the system may prompt you that the RAID controller module has temporarily suspended caching operations This action might occur when a new battery is charging when a RAID controller module has been removed or if a mismatch in cache sizes has been detected by the RAID controller module After the condition has cleared the cache properties selected in the dialog become active If the selected cache properties do not become active contact your Technical Support representative e If you select more than one virtual disk the cache settings default to no settings selected The current cache settings appear only if you select a single virtual disk e If you change the cache settings by using this option the priority of all of the virtual disks that you selected is modified To change the virtual disk cache settings 1 In the AMW select the Logical tab and select a virtual disk 2 In the toolbar select Virtual Disk Change Cache Settings Configuration Disk Groups and Virtual Disks 109 110 The Change Cache
181. lled the alternate controller when the preferred controller is 54 Planning MD3200i Series Storage Array Terms and Concepts e Physically removed Updating firmware e Involved in an event that caused failover to the alternate controller Paths used by the preferred RAID controller module to access either the disks or the host server are called the preferred paths redundant paths are called the alternate paths If a failure causes the preferred path to become inaccessible the storage array automatically uses the alternate path to access data when this occurs the enclosure status LED blinks amber Virtual Disk Ownership MDSM can be used to automatically build and view virtual disks It uses optimal settings to stripe the disk group Virtual disks are assigned to alternating RAID controller modules when they are created This default assignation provides a simple means for load balancing the workload of the RAID controller modules Ownership can later be modified to balance workload according to actual usage If virtual disk ownership is not manually balanced it is possible for one controller to have the majority of the work while the other controller is idle Limit the number of virtual disks in a disk group If multiple virtual disks are in a disk group consider e The impact each virtual disk has on other virtual disks in the same disk group e The patterns of usage for each virtual disk e Different virtual disks have higher
182. lock the physical disks You must supply the security key from a security key file that was saved on the original storage array You must provide the pass phrase that was used to encrypt the security key file to extract the security key from this file For more information see the PowerVault Modular Disk Storage Manager online help topics Erasing Secure Physical Disks In the AMW when you select a security enabled physical disk that is not part of a disk group the Secure Erase menu item is enabled on the Physical Disk menu You can use the secure erase procedure to re provision a physical disk You can use the Secure Erase option if you want to remove all of the data on the physical disk and reset the physical disk security attributes A CAUTION Possible loss of data access The Secure Erase option removes all of the data that is currently on the physical disk This action cannot be undone Before you complete this option make sure that the physical disk that you have selected is the correct physical disk You cannot recover any of the data that is currently on the physical disk After you complete the secure erase procedure the physical disk is available for use in another disk group or in another storage array Refer to the PowerVault Modular Disk Storage Manager online help topics for more information on the secure erase procedure 120 Configuration Disk Groups and Virtual Disks Configuring Hot Spare Physical Disks Gui
183. m all physical disks in the disk group Virtual disks and disk groups are set up according to how you plan to organize your data For example you might have one virtual disk for inventory a second virtual disk for financial and tax information and so on All virtual disks in a disk group support the same RAID level The storage array supports up to 255 virtual disks minimum size of 10 MB each that can be assigned to host servers Each virtual disk is assigned a Logical Unit Number LUN that is recognized by the host operating system Physical Disks Only Dell supported 6 0 Gbps SAS physical disks are supported in the storage array If the storage array detects unsupported physical disks it marks the disk as unsupported and the physical disk becomes unavailable for all operations Planning MD3200i Series Storage Array Terms and Concepts 37 K NOTE The MD3200i storage enclosure must contain at least two physical disks for proper operation This is necessary because the physical disks are used to store configuration information Physical Disk States The storage array recognizes the physical disk states Mode and status of physical disks are reported in the MDSM application Possible values for mode and status or described in Table 4 1 Table 4 1 RAID Controller Physical Disk States Status Mode Description Physical Disk Status LED Optimal Assigned The physical disk in the indicated slot Steady Green is configured as p
184. m password can be reset if it is forgotten To reset the password push and hold down the password reset switch for at least 5 seconds The password is deleted See Figure 3 1 to locate the password reset switch The RAID controller module allows you to change the password For more information about setting your password see Setting a Password on page 69 K NOTE The reset switch can be accessed by using a small object such as the tip of a pen Cache Functions and Features Cache Mirroring Cache mirroring function copies accepted host write data from the primary controller to the partner controller This action ensures that host write data is safely mirrored to the partner controller before successful completion status is returned to the host If a controller fails the surviving controller safely retains all mirrored data Cache mirroring is enabled by default Write Back Cache In Write back Cache write operations result in a completion signal being sent to the host operating system as soon as the cache receives the data to be written The target physical disk receives the data at a more appropriate time in order to increase controller performance In dual active controller configurations with Write back Caching enabled the write data is always Planning RAID Controller Modules 35 mirrored to the cache of the second controller before completion status is issued to the host initiator Write Back Cache is enabled by default unl
185. m tasks on a storage array e Beneath the menu bar is the toolbar You can select options in the toolbar to perform tasks on a storage array e Beneath the toolbar are the tabs Tabs are used to group the tasks that you can perform on a storage array e Beneath the tabs is the status bar The status bar shows status messages and status icons related to the storage array IN NOTE By default the toolbar and status bar do not appear To view the toolbar or the status bar select View Toolbar or View Status Bar respectively Configuration Overview 59 Enterprise Management Window The EMW provides high level management of storage arrays When you start MDSM the EMW opens The EMW has these tabs e Devices tab Provides information about the storage arrays e Setup tab Presents the initial setup tasks that guide you through adding storage arrays and configuring alerts The Devices tab has a Tree view on the left side of the window that shows discovered storage arrays unidentified storage arrays and the status conditions for the storage arrays Discovered storage arrays are managed by MDSM Unidentified storage arrays are available to MDSM but not configured for management The right side of the Devices tab has a Table view that shows detailed information for each storage array In the EMW you can e Discover hosts and managed storage arrays on the local sub network e Manually add and remove hosts and storage
186. mmand where mpath lt x gt is the multipathing device node on which you want to create the partition fdisk dev mapper mpath lt x gt K NOTE The lt x gt value is an alphanumeric operating system dependent format The corresponding value for mapped virtual disks can be seen using the previously run multipath command See your operating system documentation for additional information on fdisk Add a new Partition to Device Mapper The kpartx command adds the newly fdisk created partition to the Device Mapper list of usable partitions See examples below where mpath lt x gt is the device node on which the partition was created kpartx a dev mapper mpath lt x gt If successful the command does not display an output To verify success and view exact partition naming you can use these commands to see the full partition names assigned cd dev mapper Configuration Device Mapper Multipath for Linux 181 1s Below are some examples of the general mapping formats On RHEL hosts a partition node has the format dev mappet mpath lt x gt p lt y gt where lt x gt is the alphabetic number for the multipathing device lt y gt is the partition number for this device On SLES 11 x hosts a partition node has the format dev mapper mpath lt x gt part lt y gt where lt x gt is letter s assigned to the multipathing device and lt y gt is the partition number On SLES 10 3 hosts a partition node has the format dev mapp
187. mpleted properly Use the Initial Setup Tasks list the first time that you set up a storage array to perform these tasks 66 Locate the storage array Find the physical location of the storage array on your network by turning on the unit identify LEDs The storage array can be identified with a label Give a new name to the storage array Use a unique name that identifies each storage array Set a storage array password Contigure the storage array with a password to protect it from unauthorized access MDSM prompts for the password when an attempt is made to change the storage array configuration such as when a virtual disk is created or deleted Configure iSCSI host ports Configure network parameters for each iSCSI host port automatically or specify the configuration information for each iSCSI host port Configuration About Your Storage Array Configure the storage array Create disk groups virtual disks and hot spare physical disks by using the Automatic configuration method or the Manual configuration method For more information see the PowerVault Modular Disk Storage Manager online help topics Map virtual disks Map virtual disks to hosts or host groups Save configuration Save the configuration parameters in a file that you can use to restore the configuration or reuse the configuration on another storage array For more information see the PowerVault Modular Disk Storage Manager online help topics Afte
188. must register the disk with the host systems See Host to Virtual Disk Mapping on page 126 Creating Disk Groups You can create disk groups using either Automatic configuration or Manual configuration To create disk groups using automatic configuration 1 To start the Create Disk Group Wizard perform one of these actions e To create a disk group from unconfigured capacity in the storage array On the Logical tab select an Unconfigured Capacity node and select Disk Group Create Alternatively you can right click the Unconfigured Capacity node and select Create Disk Group from the pop up menu e To create a disk group from unassigned physical disks in the storage array On the Physical tab select one or more unassigned physical disks of the same physical disk type and select Disk Group Create Alternatively you can right click the unassigned physical disks and select Create Disk Group from the pop up menu e To create a secure disk group On the Physical tab select one or more unassigned security capable physical disks of the same physical disk type and select Disk Group Create Alternatively you can right click the unassigned security capable physical disks and select Create Disk Group from the pop up menu The Introduction Create Disk Group window is displayed 2 Click Next The Disk Group Name and Physical Disk Selection window is displayed 104 Configuration Disk Groups and Virtual Disks 10 11 12 1
189. n use the Locate Physical Disk option to physically locate and identify one or more of the physical disks in an expansion enclosure by activating physical disk LEDs To locate the physical disk 1 2 3 240 Select the Physical tab Select the physical disks that you want to locate Select Physical Disk Blink Physical Disk The LEDs on the selected physical disks blink When you have located the physical disks click OK The LEDs stop blinking If any other blink operations Blink Disk Group Blink Storage Array Blink Physical Disk Ports or Blink Expansion Enclosure are currently being invoked from another storage management station these LEDs also stop blinking In the rare case that the LEDs on the physical disks do not stop blinking in the AMW select Storage Array Blink Stop All Indications If the LEDs successfully stop blinking a confirmation message appears Click OK Troubleshooting Your Storage Array Software Locating an Expansion Enclosure You can use the Blink option to physically locate and identify an expansion enclosure in the storage array The LED activation varies according to the type of expansion enclosure that you have If you have an expansion enclosure with a white LED the Blink Expansion Enclosure operation causes the white LED on the expansion enclosure to come on The LED does not blink If you have any other types of expansion enclosures this operation causes the appropriate LED
190. nable write caching does not appear The Enable write caching without batteries is still available but it is not checked by default K NOTE Cache is automatically flushed after the Enable write caching check box is disabled Click OK A message prompts you to confirm the change in the virtual disk modification priority 6 Click Yes 7 Click OK Configuration Disk Groups and Virtual Disks Changing the Segment Size of a Virtual Disk You can change the segment size on a selected virtual disk During this operation I O performance is affected but your data remains available Guidelines to proceed with changing the segment size K You cannot cancel this operation after it starts Do not start this operation unless the disk group is in Optimal status MDSM determines the segment size transitions that are allowed Segment sizes that are inappropriate transitions from the current segment size are unavailable on the menu Allowed transitions usually are double or half of current segment size For example if the current virtual disk segment size is 32 KB a new virtual disk segment size of either 16 KB or 64 KB is allowed NOTE The operation to change the segment size is slower than other modification operations for example changing RAID levels or adding free capacity to a disk group This slowness is the result of how the data is reorganized and the temporary internal backup procedures that occur during the operation
191. nagement method lets you configure the maximum number of virtual disks that are supported by your operating system and host adapters A maximum of eight storage management stations can concurrently monitor an out of band managed storage array This limit does not apply to systems that manage the storage array through the in band management method When you use out of band management you must set the network configuration for each RAID controller module s management Ethernet port This includes the Internet Protocol IP address subnetwork mask subnet mask and gateway If you are using a Dynamic Host Configuration Protocol DHCP server you can enable automatic network configuration but if you are not using a DHCP server you must enter the network configuration manually K NOTE RAID controller module network configurations can be assigned using a DHCP server the default setting However if a DHCP server is not available for 150 seconds the RAID controller modules assign static IP addresses The addresses assigned are 192 168 128 101 for controller 0 and 192 168 128 102 for controller 1 Configuration About Your Storage Array 63 In Band Management Using in band management commands events and data travel through the host to controller interface Unlike out of band management commands and events are mixed with data K NOTE For detailed information on setting up in band and out of band management see the Deployment Guide
192. napshot Using the Advanced Path 153 Specifying Snapshot Virtual Disk Names 154 Snapshot Repository Capacity 156 Re creating Snapshot Virtual Disks 159 10 Contents Disabling a Snapshot Virtual Disk Preparing Host Servers to Re create a Snapshot Virtual Disk Re creating a Snapshot Virtual Disk 12 Configuration Premium Feature Virtual Disk Copy Creating a Virtual Disk Copy for an MSCS Shared Disk Virtual Disk Read Write Permissions Virtual Disk Copy Restrictions Creating a Virtual Disk Copy Before youBegin Virtual Disk Copy and Modification Operations Create Copy Wizard Failed Virtual Disk Copy Preferred RAID Controller Module Ownership Failed RAID Controller Module Copy Manager ahaaa aaa aaa Copying the Virtual Disk Storage Array Performance During Virtual Disk Copy Setting Copy Priority Stopping a Virtual Disk Copy Recopying a Virtual Disk Contents 11 Preparing Host Servers to RecopyaVirtualDisk 172 Recopying the Virtual Disk 173 Removing Copy Pairs 174 13 Configuration Premium Feature Upgrading to High Performance Tier 175 14 Configuration Device Mapper Multipath for Linux
193. napshot and repository names are too long if the source virtual disk name exceeds 16 characters Management System Interfaces 223 VSS attaches to the service and uses it to coordinate the creation of snapshot virtual disks on the storage array VSS initiated snapshot virtual disks can be triggered through backup tools known as requestors The VSS Provider Configuration Tool makes available the following configuration options e Snapshot Repository Virtual Disk Properties This section contains a drop down list for the RAID level and a field for entering source virtual disk capacity percentage for snapshot repositories e Snapshot Repository Virtual Disk Location This section contains a list of preferences for the location of the snapshot repository virtual disk These preferences are honored whenever conditions permit The Microsoft VSS installer service for storage provisioning is available on the MD3200i resource media in the windows VDS_VSS directory K NOTE When registering VSS during your Windows setup the registration graphical user interface GUI prompts you to provide the name of your array because settings in the GUI are array specific not host specific Storage Management VSS Hardware Provider Tips The number of snapshot virtual disks that can be created using a single snapshot set varies with the I O load on the RAID controller modules Under little or no I O load the number of virtual disks in a snapshot set
194. nclosure loss protection guarantees accessibility to the data on the virtual disks in a disk group if a total loss of communication occurs with a single expansion enclosure An example of total loss of communication might be loss of power to the expansion enclosure or failure of both RAID controller modules A CAUTION Enclosure loss protection is not guaranteed if a physical disk has already failed in the disk group In this situation losing access to an expansion enclosure and consequently another physical disk in the disk group causes a double physical disk failure and loss of data 124 Configuration Disk Groups and Virtual Disks Enclosure loss protection is achieved when you create a disk group where all of the physical disks that comprise the disk group are located in different expansion enclosures This distinction depends on the RAID level If you choose to create a disk group by using the Automatic method the software attempts to choose physical disks that provide enclosure loss protection If you choose to create a disk group by using the Manual method you must use the criteria specified in Table 10 2 Table 10 2 Criteria for Enclosure Loss Protection RAID Level Criteria for Enclosure Loss Protection RAID level 5 or RAID level 6 RAID level 1 RAID level 0 Ensure that all the physical disks in the disk group are located in different expansion enclosures Because a RAID level 5 requires a minimum of three phy
195. nformation contained 2 Perform one of these actions in the Storage Array Profile dialog 232 Troubleshooting Your Storage Array Software e View detailed information Go to step 3 e Search the storage array profile Go to step 4 e Save the storage array profile Go to step 5 e Close the storage array profile Go to step 6 3 Select one of the tabs and use the horizontal scroll bar and the vertical scroll bar to view the storage array profile information You can use the other steps in this procedure to search the storage array profile to save the storage array protile or to close the storage array profile 4 To search the storage array profile perform these steps a Click a b Type the term that you want to search for in the Find text box If the term is located on the current tab the term is highlighted in the storage array profile information K NOTE The search is limited to the current tab If you want to search for the term in other tabs select the tab and click the Find button again c Click the Find button again to search for additional occurrences of the term 5 To save the storage array profile perform these steps a Click Save As b To save all sections of the storage array profile select the All sections c To save information from particular sections of the storage array profile select the Select sections and select the check boxes corresponding to the sections that you want t
196. ngs to that host or host group do not create another storage partition One storage partition is sufficient if e Only one attached host accesses all of the virtual disks in the storage array e All attached hosts share access to all of the virtual disks in the storage array When you choose this type of configuration all of the hosts must have the same operating system and special software such as clustering software to manage virtual disk sharing and accessibility More than one storage partition is required if e Specific hosts must access specific virtual disks in the storage array e Hosts with different operating systems are attached to the same storage array In this case a storage partition is created for each host type You can use the Storage Partitioning Wizard to define a single storage partition The Storage Partitioning wizard guides you through the major steps required to specify which host groups hosts virtual disks and associated logical unit numbers LUNs are to be included in the storage partition Storage partitioning fails when e All mappings are defined e You create a mapping for a host group that conflicts with an established mapping for a host in the host group e You create a mapping for a host in a host group that conflicts with an established mapping for the host group Storage partitioning is unavailable when e No valid host groups or hosts exist in the Topology pane on the Mappings tab e N
197. ntext agent 1 Click Start Settings Control Pane Administrative Tools Services or Click Start Administrative Tools Services 2 From the list of services select Modular Disk Storage Manager Agent If the host context agent is running click Action Stop then wait approximately 5 seconds Configuration About Your Host 99 4 Click Action gt Start 1 0 Data Path Protection You can have multiple host to array connections for a host Ensure that you select all the connections to the array when configuring host access to the storage array K NOTE See the Deployment Guide for more information on cabling configurations K NOTE For more information on configuring hosts see Configuration About Your Host on page 93 If a component such as a RAID controller module or a cable fails or an error occurs on the data path to the preferred RAID controller module virtual disk ownership is moved to the alternate non preferred RAID controller module for processing This failure or error is called failover Drivers for multi path frameworks such as Microsoft Multi Path IO MPIO and Linux Device Mapper DM are installed on host systems that access the storage array and provide I O path failover For more information on Linux DM please see Configuration Device Mapper Multipath for Linux on page 177 For more information on MPIO please see microsoft com K NOTE You should have the multi path driver installed on the h
198. nthe AMW select View Find 2 Based on the type of search select one of these options and go to the indicated step e Search by name see step 3 e Search by special criteria see step 4 3 Type the name of the node to be found in the Find node text box See step 8 4 Based on the search criteria select one of these options and go to the indicated step e Find all virtual disks with RAID level Go to step 5 e Find all virtual disks with capacity Go to step 6 e Find all free capacity nodes Go to step 7 5 To search for all nodes based on their RAID level perform these steps a Select Find all virtual disks with RAID level b Select the RAID level from the list c Goto step 8 Troubleshooting Your Storage Array Software 235 6 To search for all nodes based on their virtual disk capacity perform these steps a Select Find all virtual disks with capacity b Type the capacity in the GB box c Specify that the capacity to be matched is less than equal to or greater than the capacity entered in the GB box d Goto step 8 7 To search for all Free Capacity nodes with a particular capacity perform these steps K NOTE This option is not available when the Search by name option is selected or from the Mappings tab You must cancel the selection of the Search by name option to use this option a Select Find all free capacity nodes b Type the capacity in the GB box c Specify that the free capacity
199. ntified node or device occurs when MDSM cannot access a new storage array Causes for this error include network connection problems the storage array is turned off or the storage array does not exist K NOTE Before beginning any recovery procedure make sure that the host context agent software is installed and running If you started the host before the host was connected to the storage array the host context agent software is not be able to find the storage array If so make sure that the connections are tight and restart the host context agent software If a storage array is managed by using both out of band management and in band management using the same host a management network connection problem might prevent direct communication with the storage array However you might still be able to manage the storage array over the in band connections The opposite situation can also occur If a storage array is managed through more than one host it is possible that the storage array might become unresponsive to communication over the connections given by one host However you might still be able to manage the storage array over the connections provided by another host Recovering From an Unidentified Storage Array To recover from an unidentified storage array 244 1 Make sure that the network connection to the storage management station is operating Make sure that the controllers are installed and that the power is turned
200. nvert to the new RAID level an error message appears and the operation does not continue If you have unassigned physical disks use the Disk Group gt gt Add Free Capacity Physical Disks option to add additional capacity to the disk group Then retry the operation To change the RAID level of a disk group 1 In the AMW select the Logical tab and select a disk group 2 Select Disk Group gt Change RAID Level 3 Select the appropriate RAID level and click Yes to confirm the selection The RAID level operation begins Configuration Disk Groups and Virtual Disks 131 Restricted Mappings Many hosts are able to map up to 256 logical unit numbers LUNs 0 to 255 per storage partition However the maximum number of mappings differs because of operating system variables failover driver issues and potential data problems The hosts listed in the table have these mapping restrictions If you try to map a virtual disk to a LUN that exceeds the restriction on these operating systems the host is unable to access the virtual disk Operating System Highest LUN Windows Server 2003 and Windows server 2008 255 Linux 255 Guidelines when you work with host types with LUN mapping restrictions e You cannot change a host adapter port to a restricted host type if there are already mappings in the storage partition that would exceed the limit imposed by the restricted host type e Consider the case of the Default Group that has a
201. o 1 enabled Mo 4 0 0 0 sdb 8 16 active ghost where mpath1 is the name of the virtual device created by device mapper It is located in the dev mapper directory DELL is the vendor of the device MD3200i is the model of the device Sdc is the physical path to the owning controller for the device Sdb is the physical path to the non owning controller for the device The following is an example of SLES output mpathb 360080e500017b2f 80000c6ca4ald4ab8 dm 21 DELL MD32xxi size 1 0G features 3 queue if no path pg_init retries 50 hwhandler 1 rdac rw _ round robin 0 prio 6 active wo 4 0 0 22 sdx 65 112 active ready 180 Configuration Device Mapper Multipath for Linux _ round robin 0 prio 1 enabled 6 0 0 22 sdcl 69 144 active ghost where mpathb is the name of the virtual device created by device mapper It is located in the dev mapper directory DELL is the vendor of the device MD3200i is the model of the device Sdx is the physical path to the owning controller for the device Sdc1 is the physical path to the non owning controller for the device Create a New fdisk Partition on a Multipath Device Node The fdisk command allows creation partition space for a file system on the newly scanned and mapped virtual disks that have been presented to Device Mapper To create a partition with the multipathing device nodes dev mapper mpath lt x gt for example use the following co
202. o host ports are defined for the host being included in the storage partition e All mappings are defined 136 Configuration Disk Groups and Virtual Disks K NOTE You can include a secondary virtual disk in a storage partition However any hosts that are mapped to the secondary virtual disk has read only access until the virtual disk is promoted to a primary virtual disk or the mirror relationship is removed Storage partitioning topology is the collection of elements such as Default Group host groups hosts and host ports shown as nodes in the Topology pane of the Mappings tab in the AMW For more information see Using the Mappings Tab on page 94 If a storage partitioning topology is not defined an informational dialog appears each time you select the Mappings tab You must define the storage partitioning topology before you define the actual storage partition Disk Group and Virtual Disk Expansion Adding free capacity to a disk group is achieved by adding unconfigured capacity on the array to the disk group Data is accessible on disk groups virtual disks and physical disks throughout the entire modification operation The additional free capacity can then be used to perform a virtual disk expansion on a standard or snapshot repository virtual disk Disk Group Expansion To add free capacity to a disk group 1 In the AMW select the Logical tab 2 Select a disk group 3 Select Disk Group Add Free Capacity Physical Disks
203. o save d Select an appropriate directory e In File Name type the file name of your choice To associate the file with a particular software application that opens it specify a file extension such as txt K NOTE The file is saved as ASCII text f Click Save 6 To exit the storage array profile click Close Troubleshooting Your Storage Array Software 233 For more information see the PowerVault Modular Disk Storage Manager online help topics Viewing the Logical Associations You can use the Associated Logical Elements option to view the logical associations among different virtual disks in a storage array To view the associations for source virtual disks snapshot virtual disks and snapshot repository virtual disks 1 In the AMW select the Logical tab or in the Topology pane of the Mappings tab 2 Select View Associated Logical Elements Alternatively you can right click the virtual disk to open a pop up menu and select View Associated Logical Elements If you select a virtual disk that does not have logical associations with other virtual disks the Associated Logical Elements option is disabled K NOTE The View Associated Logical Elements dialog appears which indicates the logical associations for the selected virtual disk 3 To close the View Associated Logical Elements dialog click Close Viewing the Physical Associations You can use the Associated Physical Components option to view the physical
204. oad By default only the downloadable files that are compatible with the current storage array configuration appear When you select a file in the File Selection area of the dialog applicable attributes if any of the file appear in the File Information area The attributes indicate the version of the file If you want to download an NVSRAM file with the firmware select Transfer NVSRAM file with RAID controller module firmware and click Select File next to Selected NVSRAM file To transfer the files to the RAID controller module without activating them click Transfer files but don t activate them activate later Management Firmware Downloads 7 10 11 12 Click Transfer Keep these guidelines in mind If the Transfer button is inactive ensure that you either select an NVSRAM file or cleared the Transfer NVSRAM file with RAID controller module firmware If the file selected is not valid or is not compatible with the current storage array configuration the File Selection Error dialog appears Click OK to close it and choose a compatible firmware or NVSRAM file In the Confirm Download dialog click Yes The download starts Perform one of these actions Select Tools Upgrade RAID Controller Module Firmware e Select the Setup tab and click Upgrade RAID Controller Module Firmware In the Storage array pane select the storage array for which you want to upgrade the RAID controller module f
205. od you can choose to create a CHAP secret The CHAP secret is a password that is recognized by the initiator and the target If you are using mutual authentication to configure the storage array you must enter the same CHAP secret that is defined in the host server iSCSI initiator and you must define a CHAP secret on the target the storage array that must be configured in every iSCSI initiator that connects to the target storage array For more information on CHAP see Understanding CHAP Authentication in the Deployment Guide 82 Configuration Using iSCSI Initiator CHAP Secret The initiator CHAP secret is set on the host using the iSCSI initiator configuration program provided with the host operating system If you are using the mutual authentication method you must define the initiator CHAP secret when you set up the host This must be the same CHAP secret that is defined for the target when defining mutual authentication settings Target CHAP Secret If you are using CHAP secrets you must define the CHAP secret for the target Valid Characters for CHAP Secrets The CHAP secret must be between 12 and 57 characters The CHAP secret supports characters with ASCII values of 32 to 126 decimal See Table 7 1 for a list of valid ASCII characters Table 7 1 Valid ASCII Characters for CHAP Secrets Valid ASCII Characters for CHAP Secrets Space amp pOT 2 a Ae SB 67 8 9 gt lt gt A BC D E F G
206. odes and partition nodes created using the directions provided above should be mounted or in any way accessed by the host system or its users Table 14 1 Useful Device Mapper Commands Command Descriptions multipath h Prints usage information multipath ll Displays the current multipath topology using all available information sysfs the device mapper path checkers and so on multipath Re aggregates multipathing device with simplified output multipath f Flushes out Device Mapper for the specified multipathing lt multipath_dev_node gt device Used if the underlying physical devices are deleted unmapped multipath F Flushes out all unused multipathing device maps rescan_dm_devs Dell provided script Forces a rescan of the host SCSI bus and aggregates multipathing devices as needed For use when e LUNs are dynamically mapped to the hosts e New targets are added to the host e Failback of the storage array is required e For MD3200i Series arrays iSCSI sessions have to be established for rescan to take effect Limitations and Known Issues e In certain error conditions with the no_path_retry or the queue_if_no_path feature is set applications may hang To overcome these conditions the you must enter the following command for each affected multipath device dmsetup message device 0 fail if no path where device is the multipath device name e g mpath2 do not specify the path 184 Configuration
207. odule To view the storage array connections 1 From the toolbar in AMW select Storage Array View Connections The lt Storage Array gt Connections dialog is displayed 2 Click the column name to sort the connections according to your preference 3 Click Close If you receive an error message for a port you can use this dialog to identify the components on the port that might have caused the error By isolating these components you prevent accidentally disconnecting components that are still in operation which could cause an interruption in data flow 70 Configuration About Your Storage Array Adding Editing a Comment to an Existing Storage Array A descriptive comment with an applicable storage array name is a helpful identification tool You can add or edit a comment for a storage array in the EMW only To add or edit a comment 1 In the EMW select the Devices tab and select the relevant managed storage array 2 Select Edit Comment The Edit Comment dialog is displayed 3 Type the 60 character comment 4 Click OK This option updates the comment in the table view and saves it in your local storage management station file system The comment does not appear to administrators who are using other storage management stations Removing Storage Arrays You can remove a storage array from the list of managed arrays if you no longer want to manage it from a specific storage management station Removing a storage
208. on to the storage array Correct any existing problems before continuing If you have an in band storage array use the following procedure Click Refresh after each step to check the results a Make sure that the host context agent software is installed and running If you started the host before the host was connected to the controllers in the storage array the host context agent software is not be able to find the controllers If so make sure that the connections are tight and restart the host context agent software b Make sure that the network can access the host by using the ping command in the following syntax Troubleshooting Your Storage Array Software ping lt host name or IP address of the host gt If the network can access the host continue to step c If the network cannot access the host skip to step d Remove the host with the unresponsive status from the MDSM and add that host again If the host returns to optimal status you have completed this procedure Make sure that the power to the host is turned on and that the host is operational If applicable make sure that the host bus adapters have been installed in the host Examine all external cables and switches or hubs to make sure that you cannot see any damage and that they are tightly connected If you have recently replaced or added the controller restart the host context agent software so that the new controller is found If a problem exist
209. on all of the physical disks in the expansion enclosure to blink To locate the expansion enclosure 1 2 3 Select the Physical tab Select a physical disk in the expansion enclosure that you want to locate Select Physical Disk Blink Expansion Enclosure The LED or LEDs on the expansion enclosure or physical disks come on When you have located the expansion enclosure click OK The LEDs stop blinking If you have an expansion enclosure with a blue LED the LED goes off If any other blink operations Blink Storage Array Blink Disk Group Blink Physical Disk Ports Blink Expansion Enclosure or Blink Physical Disk are currently being invoked from another storage management station these LEDs also stop blinking In the rare case that the LEDs on the expansion enclosure do not stop blinking from the Array Management Window select Storage Array gt Blink Stop All Indications If the LEDs successfully stop blinking a confirmation message appears Click OK Troubleshooting Your Storage Array Software 241 Capturing the State Information Use the Troubleshooting Capture State Information option to capture information about the current state of your storage array and save the captured information to a text file You can then send the captured information to your Technical Support representative for analysis Potential to cause an unresponsive storage array The State Capture option can cause a storage array to becom
210. onfigure iSCSI Host Ports window is displayed 3 In the iSCSI host port list select an appropriate RAID controller module and an iSCSI host port The connection status between the storage array and the host appears in the Status area when you select an iSCSI host port The connection status is either connected or disconnected Additionally the media access control address MAC of the selected iSCSI host port appears in the MAC address area K NOTE For each iSCSI host port you can use either IPv4 settings or IPv6 settings or both Configuration Using iSCSI 85 4 To use the IPv4 settings for the iSCSI host port select Enable IPv4 and select the IPv4 Settings tab 5 To use the Pv6 settings for the iSCSI host port select Enable IPv6 and select the IPv6 Settings tab 6 To configure the IPv4 and IPv6 settings e To automatically configure the settings select Obtain configuration automatically This option is selected by default e To manually configure the settings select Specify configuration K NOTE If you select the automatic configuration method the configuration is obtained automatically using the DHCP for IPv4 settings Similarly for IPv6 settings the configuration is obtained automatically based on the MAC address and the IPv6 routers present on the subnetwork You can click Advanced IPv4 Settings and Advanced IPv6 Settings to configure the Virtual Local Area Network VLAN support and Ethernet priority
211. onments where typical I O size is small and there is a high proportion of read activity RAID 6 is recommended when large size physical disks are used or large number of physical disks are used in a disk group RAID 10 RAID 10 a combination of RAID 1 and RAID 0 uses disk striping across mirrored disks It provides high data throughput and complete data redundancy Utilizing an even number of physical disks four or more creates a RAID level 10 disk group and or virtual disk Because RAID levels 1 and 10 use disk mirroring half of the capacity of the physical disks is utilized for mirroring This leaves the remaining half of the physical disk capacity for actual storage RAID 10 is automatically used when a RAID level of is chosen with four or more physical disks RAID 10 works well for medium sized databases or any environment that requires high performance and fault tolerance and moderate to medium capacity Segment Size Disk striping enables data to be written across multiple physical disks Disk striping enhances performance because striped disks are accessed simultaneously 42 Planning MD3200i Series Storage Array Terms and Concepts The segment size or stripe element size specifies the size of data in a stripe written to a single disk The storage array supports stripe element sizes of 8 16 32 64 128 256 and 512 KB The default stripe element size is 128 KB Stripe width or depth refers to the number of disks involved
212. ons for enabling this functionality Host Server to Virtual Disk Mapping The host server attached to a storage array accesses various virtual disks on the storage array through its host ports Specific virtual disk to LUN mappings to an individual host server can be defined In addition the host server can be part of a host group that shares access to one or more virtual disks You can manually configure a host server to virtual disk mapping When you configure host server to virtual disk mapping consider these guidelines e You can define one host server to virtual disk mapping for each virtual disk in the storage array 50 Planning MD3200i Series Storage Array Terms and Concepts e Host server to virtual disk mappings are shared between RAID controller modules in the storage array e Aunique LUN must be used by a host group or host server to access a virtual disk e Not every operating system has the same number of LUNs available for use Host Types A host server is a server that accesses a storage array Host servers are mapped to the virtual disks and use one or more iSCSI initiator ports Host servers have the following attributes e Host name A name that uniquely identifies the host server e Host group used in Cluster solutions only Two or more host servers associated together to share access to the same virtual disks This host group is a logical entity you can create in MDSM All host servers in a host
213. ontrollers are booted successfully If the RAID controller module detects a non Dell supported storage array the controller aborts startup The RAID controller module does not generate any events to alert you in the event of an invalid array but the array status LED is lit with a flashing amber color to indicate a fault state For full details on the LEDs and their interpretation see Back Panel Features and Indicators on page 27 ECC Errors RAID controller firmware can detect ECC errors and can recover from a single bit ECC error whether the RAID controller module is in a redundant or nonredundant configuration A storage array with redundant controllers can recover from multi bit ECC errors as well because the peer RAID controller module can take over if necessary The RAID controller module failsover if it experiences up to 10 single bit errors or up to three multi bit errors Troubleshooting Your Array 257 PCI Errors The storage array firmware can detect and only recover from PCI errors when the RAID controller modules are configured for redundancy If a virtual disk uses cache mirroring it fails over to its peer RAID controller module which initiates a flush of the dirty cache Critical Conditions The storage array generates a critical event if the RAID controller module detects a critical condition that could cause immediate failure of the array and or loss of data The storage array is in a critical condition if one
214. oots or is reset Blinks amber when the enclosure is either in a fault state or the hosts are not using the preferred path to a virtual disk The power LED lights green when at least one power supply is supplying power to the enclosure Planning About Your Storage Array 25 Item Indicator Button or Icon Description Connector 3 Split mode LED ge This LED should be unlit as the split mode function is not supported by the MD3200i Series Storage Arrays 4 System identification O The system identification button on the front button control panel can be used to locate a particular enclosure within a rack When the button is pushed the system status indicators on the control panel and the RAID controller module s blink blue until the button is pushed again 5 Hard drives PowerVault MD3200i Up to 12 3 5 inch SAS hot swappable hard drives PowerVault MD3220i Up to 24 2 5 inch SAS hot swappable hard drives 6 Enclosure mode The function of this switch is not applicable to switch QS your storage array However if MD1200 Series expansion enclosures are daisy chained to the storage array the enclosure mode switches of the MD1200 Series expansion enclosures must be set to the Unified Mode position NOTE This switch must be set prior to turning on the MD1200 series expansion enclosure Changing the switch setting after the expansion enclosure is turned on has no effect on enclosure configuration until the expansion
215. operating system The VDS component utilizes third part vendor specific software modules known as providers to access and configure third party storage resources such as MD3200i storage arrays The VDS component exposes a set of application programming interfaces APIs that provides a single interface for managing disks and other storage hardware The MD3200i Series VDS Provider enables Windows tools including the Disk Manager to access and configure storage array virtual disks The VDS Provider for the MD3200i Series arrays is available on the MD3200i Series resource media For more information on VDS see microsoft com Volume Shadow Copy Service The Microsoft Volume Shadow copy Service VSS is a component of the Microsoft Windows operating system The VSS component utilizes third part vendor specific software modules known as providers to access and utilize snapshot and disk copy functionality provided by third party storage resources such as MD3200i Series storage arrays The combination of the VSS component and the VSS Provider included on the MD3200i Resource media enable the MD3200i Series arrays to be utilized by third party and Windows backup and snapshot applications K NOTE Virtual disks used as source virtual disks for VSS snapshots should have names no longer than 16 characters The VSS hardware provider uses the source virtual disk name as a prefix for the snapshot and repository virtual disk names The resulting s
216. opology o ooa a 98 Starting or Stopping the Host Context Agent 99 1 0 Data Path Protection 100 Managing Host Port Identifiers 101 10 Configuration Disk Groups and Virtual Disks 103 Creating Disk Groups and Virtual Disks 103 Creating DiskGroups 104 Locating a Disk Group 106 Creating Virtual Disks aaa aaa 106 Changing the Virtual Disk Modification Priority 108 Changing the Virtual Disk Cache Settings 109 Changing the Segment Size of a Virtual Disk 111 Changing the 1 0 Type 112 Choosing an Appropriate Physical Disk Type 113 Physical Disk Security with Self Encrypting Disk 113 Creating a SecurityKey 116 Changing aSecurityKey 117 Saving a Security Key 119 Unlocking Secure Physical Disks 120 Erasing Secure Physical Disks 120 Configuring Hot Spare Physical Disks 121 Hot Spares and Rebuild 123 Global Hot Spares 123 Hot Spare Operation 123 Hot Spare Drive Protection 123 Enclosure Loss Protection 124 Host to Virtual Disk Mapping 126 Creating Host to Virtual Disk Mappings 126 Modifying and Removing Host to Virtual Disk Mapping 128 Changing Controller Ownership ofthe Virtual Disk 129 R
217. orage array correct the problem Perform one of these actions depending on how your storage array is managed e Out of band managed storage array Go to step 6 In band managed storage array Go to step 12 For an out of band managed storage array ensure that the RAID controller modules are network accessible by using the ping command to make sure that the RAID controller module can be reached Type one of these commands and press Enter e ping lt host name gt e ping lt RAID controller module IP address gt If the verification is successful see step 8 if not see step 9 Remove the storage array with the Unresponsive status from the EMW and select Add Storage Array to add the storage array again If the storage array does not return to Optimal status check the Ethernet cables to make sure that there is no visible damage and that they are securely connected Make sure the appropriate network configuration tasks have been performed For example make sure that IP addresses have been assigned to each RAID controller module If there is a cable or network accessibility problem see step 20 if not step 12 For an in band managed storage array make sure that the host is network accessible by using the ping command to verify that the host can be reached Type one of these commands and press Enter e ping lt host name gt e ping lt RAID controller module IP address gt If the verification successful see step 14
218. ost to the virtual disk This mapping grants a host or a host group access to a particular virtual disk or to a number of virtual disks in a storage array You can define the mappings on the Mappings tab in the Array Management Window AMW On the Summary tab in the AMW the Hosts amp Mappings area indicates how many hosts are configured to access the storage array You can click Configured Hosts in the Hosts amp Mappings area to see the names of the hosts A collection of elements such as default host groups hosts and host ports appear as nodes in the Topology pane of the Mappings tab in the AMW The host topology is reconfigurable You can perform the following tasks Configuration About Your Hot 93 e Create a host and assign an alias or user label e Add or associate a new host port identifier to a particular host e Change the host port identifier alias or user label e Move or associate a host port identifier to a different host e Replace a host port identifier with a new host port identifier e Manually activate an inactive host port so that the port can gain access to host specific or host group specific LUN mappings Set the host port type to another type e Move a host from one host group to another host group e Remove a host group a host or a host port identifier Rename a host group or a host Using the Mappings Tab In the mappings tab you can e Define hosts and hosts groups e Add mappings to the
219. osts at all times even in a configuration where there is only one path to the storage system such as a single port cluster configuration During a failover the virtual disk transfer is logged as a critical event and an alert notification is sent automatically if you have configured alert destinations for the storage array 100 Configuration About Your Host Managing Host Port Identifiers You can manage the host port identifiers that are added to the storage array You can Add Ad4d or associate a new host port identifier to a particular host Edit Change the host port identifier alias or user label You can move associate the host port identifier to a new host Replace Replace a particular host port identifier with another host port identifier Remove Remove the association between a particular host port identifier and the associated host To manage a host port identifier 1 Perform one of these actions e Right click the host in the Topology pane and select Manage Host Port Identifiers in the pop up menu e From the menu bar select Mappings Manage Host Port Identifiers The Manage Host Port Identifiers dialog is displayed You can choose to manage the host port identifiers for a specific host or all of the host port identifiers for all of the hosts in Show host port identifiers associated with If you want to manage the host port identifiers for a specific host select the host from the list of host
220. ou create host groups with MDSM All hosts in a host group must have the same host type operating system In addition all hosts in the host group must have special software such as clustering software to manage virtual disk sharing and accessibility If a host is part of a cluster every host in the cluster must be connected to the storage array and every host in the cluster must be added to the host group Creating a Host Group To create host groups 1 In the AMW select the Mappings tab 2 In the Topology pane select the storage array or the Default Group 3 Perform one of the following actions e Select Mappings Define Host Group 96 Configuration About Your Host e Right click the storage array or the Default Group and select Define Host Group from the pop up menu Type the name of the new host group in Enter new host group name Select the appropriate hosts in the Select hosts to add area Click Add K NOTE To remove hosts select the hosts in the Hosts in group area and click Remove 7 Click OK The host group is added to the storage array Adding a Host to a Host Group You can add a host to an existing host group or a new host group using the Define Host Wizard For more information see Defining a Host on page 94 You can also move a host to a different host group For more information see Moving a Host to a Different Host Group on page 97 Removing a Host From a Host Group You can remo
221. ous key You cannot view or read the key However a copy of the security key must be kept on some other storage medium for backup in case of system failure or for transfer to another storage array A pass phrase that you provide encrypts and decrypts the security key for storage on other media When you change a security key you also provide information to create a security key identifier Changing the security key does not destroy any data You can change the security key at any time Before you change the security key ensure that e All virtual disks in the storage array are in Optimal status e In storage arrays with two RAID controller modules both are present and working normally Configuration Disk Groups and Virtual Disks 117 To change the security key 118 1 In the AMW toolbar select Storage Array Physical Disk Security gt Change Security Key The Confirm Change Security Key window is displayed Type yes in the text field and click OK The Change Security Key window is displayed In Secure key identifier enter a string that become part of the secure key identifier You may leave the text box blank or enter up to 189 alphanumeric characters without white space punctuation or symbols Additional characters is generated automatically Edit the default path by adding a file name to the end of the path or Click Browse navigate to the required folder and enter the name of the file In Pass phrase enter a str
222. pes multiple Unconfigured Capacity nodes may appear in the Logical pane of the Logical tab Each physical disk type has an associated Unconfigured Capacity node if unassigned physical disks are available in the expansion enclosure You cannot create a disk group and subsequent virtual disk from different physical disk technology types Each physical disk that comprises the disk group must be of the same physical disk type K NOTE Ensure that you create disk groups before creating virtual disks 106 Configuration Disk Groups and Virtual Disks To create virtual disks 1 Choose one of these methods to start the Create Virtual Disk Wizard e To create a virtual disk from unconfigured capacity in the storage array On the Logical tab select an Unconfigured Capacity node and select Virtual Disk Create Alternatively you can right click the Unconfigured Capacity node and select Create Virtual Disk from the pop up menu e To create a virtual disk from free capacity on a disk group On the Logical tab select a Free Capacity node and select Virtual Disk gt Create Alternatively you can right click the Free Capacity node and select Create Virtual Disk from the pop up menu e To create a virtual disk from unassigned physical disks in the storage array On the Physical tab select one or more unassigned physical disks of the same physical disk type and select Virtual Disk Create Alternatively you can right click the unassi
223. physical disk is being identified Green flashing Unassigned 250 ms Hot Spare in use or Hot Spare standby N A N A The indicated slot is empty or the array cannot detect the physical disk If a disk drive rebuild fails because of a source drive failure or because the drive is too small the MDSM reports a failure of the physical disk even though the LED state on the drive indicates the rebuild was aborted green for 3 seconds amber for 3 seconds then off for 3 seconds Self Monitoring Analysis and Reporting Technology SMART monitors the internal performance of all physical disk components to detect faults indicating the potential for physical disk failure SMART uses this information to report whether failure is imminent so that a physical disk can be replaced before failure occurs The storage array monitors all attached drives and notifies you when a predicted failure is reported by a physical disk Virtual Disks and Disk Groups When configuring a storage array you must 1 Organize the physical disks into disk groups Create virtual disks within these disk groups Provide host server access Create mappings to associate the virtual disks with the host servers 2 3 4 K NOTE Host server access must be created before mapping virtual disks Planning MD3200i Series Storage Array Terms and Concepts 39 Disk groups are always created in the unconfigured capacity of a storage array Unconfigured capacity is the availabl
224. pology is the organization of hosts host groups and host interfaces configured for a storage array You can view the host topology in the Mappings tab of the AMW For more information see Using the Mappings Tab on page 94 The following tasks change the host topology e Moving a host or a host connection Renaming a host group a host or a host connection e Adding a host connection e Replacing a host connection 98 Configuration About Your Host e Changing a host type MDSM automatically detects these changes for any host running the host agent software Starting or Stopping the Host Context Agent The host context agent discovers the host topology The host context agent starts and stops with the host The topology discovered by the host context agent can be viewed by clicking Configure Host Access Automatic in the Configure tab in the MDSM You must stop and restart the host context agent to see the changes to the host topology if e Anew storage array is attached to the host server e A host is added while turning on power to the RAID controller modules Linux To start or stop the host context agent enter the following command at the prompt SMagent start SMagent stop You stop and then restart SMagent after e Moving a controller offline or replacing a controller e Removing host to array connections from or attaching host to array connections to a Linux host server Windows To start or stop the host co
225. pository Virtual Disk The selection jumps to the associated snapshot repository virtual disk in the Logical pane Select View Go To gt Source Virtual Disk The selection jumps to the associated source virtual disk in the Logical pane Select View Go To Target Virtual Disk K NOTE If the source virtual disk has more than one associated target virtual disk select the target virtual disk that you want from the list and click OK The selection jumps to the associated target virtual disk in the Logical pane Recovering From an Unresponsive Storage Array Condition A storage array can have an Unresponsive status for several reasons Use the procedure in this topic to determine a possible cause and solution MDSM can take up to five minutes to detect that a storage array has become unresponsive or becomes responsive again Before completing this procedure make sure that you wait some time before you decide that the storage array is still unresponsive To recover from an unresponsive storage array Check the Tree View in the EMW to see if all storage arrays are unresponsive Troubleshooting Your Storage Array Software 237 238 10 11 12 13 If any storage arrays are unresponsive check the storage management station network connection to make sure that it can reach the network Ensure that the RAID controller modules are installed and that there is power to the storage array If there a problem with the st
226. r Module on page 207 Remove the power supply cooling fan modules See Removing a Power Supply Cooling Fan Module on page 211 Remove the control panel See Removing the Control Panel on page 215 Remove the screws that secure the RAID controller module power supply cage to the chassis Grasp the cage removal ring at the bottom center of the array and pull the RAID controller module power supply cage toward the back of the chassis See Figure 16 15 Lift the RAID controller module power supply cage away from the chassis See Figure 16 15 Loosen the captive screw that secures the backplane to the chassis See Figure 16 16 for PowerVault MD3200i or Figure 16 17 for PowerVault MD3220i Remove the screws that secure the backplane and pull the backplane out of the array See Figure 16 16 for PowerVault MD3200i or Figure 16 17 for PowerVault MD3220i Management Installing Array Components 217 Figure 16 15 Removing and Installing the RAID controller module Power Supply Cage 1 RAID controller module power 2 screws 6 supply cage 218 Management Installing Array Components Figure 16 16 Removing and Installing the Backplane PowerVault MD3200i 1 screws 5 2 backplane 3 captive screw Figure 16 17 Removing and Installing the Backplane PowerVault MD3220i 1 screws 4 2 backplane 3 captive screw Management Installing Array Components 219 Installing the Backplane 1 2 10 11 220
227. r host operating system for creating snapshot virtual disks Failure to meet the requirements of your host operating system results in an inaccurate snapshot of the source virtual disk or the target virtual disk in a virtual disk copy K NOTE Before you create a new snapshot of a source virtual disk stop any data access I O activity or suspend data transfer to the source virtual disk to ensure that you capture an accurate snapshot of the source virtual disk Close all applications including Windows Internet Explorer to make sure all 1 0 activity has stopped K NOTE Removing the drive letter of the associated virtual disk s in Windows or unmounting the virtual drive in Linux helps to guarantee a stable copy of the drive for the Snapshot Before creating a snapshot virtual disk the host server must be in the proper state To prepare your host server 1 Stop all I O activity to the source 2 Using your Windows system flush the cache to the source At the host prompt type SMrepassist f lt filename identifier gt and press lt Enter gt For more information see SMrepassist Utility on page 243 3 Remove the drive letter s of the source in Windows or unmount the virtual drive s in Linux to help guarantee a stable copy of the drive for the Snapshot If this is not done the snapshot operation reports that it has completed successfully but the snapshot data is not updated properly Zi NOTE Verify that the virtual dis
228. r multipathing with an MD3200i Series storage array 1 Unmount all Device Mapper multipath device nodes mounted on the server umount lt mounted multipath device node gt Stop the Device Mapper multipath service etc init d multipathd stop Flush the Device Mapper multipath maps list to remove any old or modified mappings multipath F K NOTE The boot operating system drive may have an entry with the Device Mapper multipathing table This is not affected by the multipath F command However using multipath 11 should not show any multipathing devices with model MD3200i or MD3200i Log out of all iSCSI sessions from the host server to the storage array iscsiadm m node logout Important Information About Special Partitions When using Device Mapper with the MD3200i Series array all physical disks are assigned a disk device node This includes a special device type used for in band management of the MD3200i Series array known as the Access Disk or Universal Xport device VAN CAUTION Certain commands such as Isscsi displays one or more instances of Universal Xport devices These device nodes must never be accessed mounted or used in any way Doing so could cause loss of communication to the storage array and possibly cause serious damage to the storage array potential making data stored on the array inaccessible Configuration Device Mapper Multipath for Linux 183 Only multipathing device n
229. r operating system In the Change Mapping dialog click Yes to confirm the changes The mapping is checked for validity and is saved The Defined Mappings pane is updated to reflect the new mapping The Topology pane is also updated to reflect any movement of host groups or hosts K NOTE If a password is set on the storage array the Enter Password dialog appears Type the current password for the storage array and click OK If configuring a Linux host run the rescan_dm_devs utility on the host and remount the virtual disk if required This utility i is installed on the host as part of the MDSM install process Configuration Disk Groups and Virtual Disks 8 Restart the host applications Changing Controller Ownership of the Virtual Disk If the host has a single data path to the MD storage array the virtual disk must be owned by the controller to which the host is connected You must configure this storage array before you start I O operations and after the virtual disk is created You can change the RAID controller module ownership of a standard virtual disk or a snapshot repository virtual disk You cannot directly change the RAID controller module ownership of a snapshot virtual disk because the snapshot virtual disk inherits the RAID controller module owner of its associated source virtual disk Changing the RAID controller module ownership of a virtual disk changes the preferred RAID controller module ownership of the virtu
230. r you complete the basic steps for configuring the storage array you can perform these optional tasks Manually define hosts Define the hosts and the host port identifiers that are connected to the storage array Use this option only if the host is not automatically recognized and shown in the Mappings tab Configure ethernet management ports Configure the network parameters for the Ethernet management ports on the RAID controller modules if you are managing the storage array by using the out of band management connections View and enable premium features Your MDSM might include premium features View the premium features that are available and the premium features that are already started You can start available premium features that are currently stopped Manage iSCSI settings You can configure iSCSI settings for authentication identification and discovery Locating Storage Arrays You can use the Blink option to physically locate and identify a storage array K NOTE If the LEDs from the Blink Storage Array operation do not stop blinking select Stop All Indications to stop the process manually To locate the storage array 1 Select the relevant storage array and e In the EMW right click the appropriate storage array and select Blink Storage Array e Inthe AMW select the Setup tab click Blink Storage Array Configuration About Your Storage Array 67 e Inthe AMW select Storage Array Blink Stora
231. r you create virtual disks you must map them to the host s connected to the array Guidelines to configure host to virtual disk mapping Each virtual disk in the storage array can be mapped to only one host or host group Host to virtual disk mappings are shared between controllers in the storage array A unique LUN must be used by a host group or host to access a virtual disk Each host has its own LUN address space MDSM permits the same LUN to be used by different hosts or host groups to access virtual disks in a storage array Not every operating system has the same number of LUNs available You can define the mappings on the Mappings tab in the Array Management Window See Using the Mappings Tab on page 94 Creating Host to Virtual Disk Mappings Guidelines to define the mappings An access virtual disk mapping is not required for an out of band storage array If your storage array is managed using an out of band connection and an access virtual disk mapping is assigned to the Default Group an access virtual disk mapping is assigned to every host created from the Default Group To prevent this action from occurring remove the access virtual disk mapping from the Default Group Most hosts have 256 LUNs mapped per storage partition The LUN numbering is from 0 through 255 If your operating system restricts LUNs to 127 and you try to map a virtual disk to a LUN that is greater than or equal to 127 the host cannot acces
232. rVault Modular Disk Configuration Utility MDCU is an iSCSI configuration wizard that can be used in conjunction with MDSM to simplify the configuration of iSCSI connections The MDCU software is located on the MD3200i Series resource media Other Information You May Need WARNING See the safety and regulatory information that shipped with your system Warranty information may be included within this document or as a separate document e Getting Started Guide provides an overview of setting up and cabling your storage array 20 Introduction Deployment Guide provides installation and configuration instructions for both software and hardware Storage Manager CLI Guide provides information about using the command line interface CLI Resource media contains all system management tools Systems Support Matrix provides information on supported software and hardware for MD systems The document is available at support dell com manuals Dell PowerEdge Cluster Documentation is available at dell com ha Release notes or readme files are included to provide last minute updates to the enclosure or documentation or advanced technical reference material intended for experienced users or technicians This document as well as Dell PowerVault MD 1200 series installation guide is available at support dell com manuals for users who incorporate MD 1200 expansion enclosures NOTE Always check for updates on support dell com manuals and read
233. re that the adjacent drives are fully installed Inserting a hard drive carrier and attempting to lock its handle next to a partially installed carrier can damage the partially installed carrier s shield spring and make it unusable If applicable remove the front bezel See Removing the Front Bezel on page 198 If applicable remove the drive blank from the bay See Removing a Drive Blank on page 199 Press the release button to open the drive carrier release handle Insert the hard drive carrier into the drive bay until the carrier contacts the backplane Close the handle to lock the drive in place Removing a Hard Drive From a Hard Drive Carrier Remove the screws from the slide rails on the hard drive carrier and separate the hard drive from the carrier See Figure 16 5 for PowerVault MD3200i and Figure 16 6 for PowerVault MD3220i 202 Management Installing Array Components Figure 16 5 Removing and Installing a Hard Drive Into a 3 5 Inch Drive Carrier 4 1 screws 4 2 drive carrier 3 SAS screw hole 4 hard drive Management Installing Array Components 203 Figure 16 6 Removing and Installing a Hard Drive Into a 2 5 Inch Drive Carrier 1 screws 4 2 drive carrier 3 SAS screw hole 4 hard drive 204 Management Installing Array Components Installing a Hard Drive Into a Drive Carrier 1 Insert the hard drive into the hard drive carrier with the connector end of the drive at the back See Figure 16
234. reating a new host port identifier In New host port identifier enter a 16 character name and an up to 30 character Alias for the host port identifier and click Add K NOTE The host port identifier name must contain only the letters A through F Click Next The Specify Host Type window is displayed In Host type select the relevant operating system for the host The Host Group Question window is displayed In this window you can select e Yes this host shares access to the same virtual disks with other hosts e No this host does NOT share access to the same virtual disks with other hosts Click Next If you select Yes the Specify Host Group window is displayed If you select No see step 11 Enter the name of the host group or select an existing host group and click Next Configuration About Your Host 95 The Preview window is displayed 11 Click Finish Removing Host Access To remove host access 1 In the AMW select the Mappings tab select the host node in the Topology pane 2 Perform one of these actions Select Mappings Remove e Right click the host node and select Remove from the pop up menu The Remove confirmation dialog appears 3 Type yes 4 Click OK For more information see the PowerVault Modular Disk Storage Manager online help topics Managing Host Groups A host group is a logical entity of two or more hosts that share access to specific virtual disks on the storage array Y
235. roller module ownership of a disk group 1 In the AMW select the Logical tab and select a disk group 2 Select Disk Group Change Ownership Preferred Path 3 Select the appropriate RAID controller module slot and click Yes to confirm the selection A CAUTION Possible loss of data access Changing ownership at the disk group level causes every virtual disk in that disk group to transfer to the other RAID controller module and use the new 1 0 path If you do not want to set every virtual disk to the new path change ownership at the virtual disk level instead 130 Configuration Disk Groups and Virtual Disks The ownership of the disk group is changed I O to the disk group is now directed through this I O path You are finished with this procedure K NOTE The disk group might not use the new 1 0 path until the multi path driver reconfigures and recognizes the new path This action usually takes less than five minutes Changing the RAID Level of a Disk Group Changing the RAID level of a disk group changes the RAID levels of every virtual disk that comprises the disk group Performance might be slightly affected during the operation Guidelines to change the RAID level of a disk group e You cannot cancel this operation after it begins e The disk group must be in Optimal status before you can perform this operation e Your data remains available during this operation e If you do not have enough capacity in the disk group to co
236. rray 0 257 ECC Errors dows ata le ate aa 257 PGI Errors eke ee eee a eG 258 Critical Conditions 258 Noncritical Conditions 258 16 Contents 21 Getting Help 259 Contacting Dell 259 Contents 17 18 Contents Introduction See the Safety Environmental and Regulatory Information document for important safety information before following any procedures listed in this document About This Document This guide familiarizes you with the functions of the MD3200i Series storage array The guide is organized according to the tasks that you must complete after receiving your Dell PowerVault MD3200i1 Series storage array Planning lInformation about the storage array and its features Configuration lasks that must be completed to ensure that your storage array performs optimally Management lasks the may be performed to ensure the storage array components are up to date and performing properly including removal and installation of storage array components Troubleshooting Tasks that you must complete to resolve problems that may occur with the storage array Additional information on these and other topics can be found in the Dell PowerVault MD3200i and MD3220i Storage Array Deployment Guide available at support dell com manuals Inside the box of the Dell PowerVault MD3200i Series Storage Array Unless specified MD
237. rrect before adding a new storage array using the Automatic option 64 Configuration About Your Storage Array K NOTE For Linux set the default gateway so that broadcast packets are sent to 255 255 255 0 For Red Hat Enterprise Linux if no gateway exists on the network set the default gateway to the IP address of the NIC K NOTE MDSM uses TCP UDP port 2463 for communication to the MD Storage Array Automatic Discovery of Storage Arrays The Automatic Discovery process sends out a broadcast message across the local subnetwork subnet and adds any storage array that responds to the message The Automatic Discovery process finds both in band and out of band storage arrays K NOTE The Automatic Discovery option and the Re scan Hosts option in the Enterprise Management Window provide automatic methods for discovering managed storage arrays Manual Addition of a Storage Array Use Manual Addition if the storage array resides outside of the local subnet This process requires specific identification information to manually add a storage array To add a storage array that uses out of band management specify the host name or management port IP address of each controller in the storage array Before using this option verify that the applicable network configuration tasks have been performed To add an in band storage array add the host through which the storage array is attached to the network K NOTE It can take
238. ry 53 Stopping copy 171 Storage Array Performance 170 Virtual Disk Copy Source 53 Virtual Disk Expansion 138 Virtual Disk Initialization 43 Virtual Disk Migration and Disk Roaming Disk Migration 48 Disk Roaming 50 Virtual Disk Operations 43 Index 266 Virtual Disk Operations Limit 44 Virtual Disk Ownership 55 Virtual Disk States 40 Virtual DiskCopy Target 53 Virtual Disks and Disk Groups 39 Index 267 268 Index
239. s make the appropriate modifications to the host If you have an out of band storage array use the following procedure Click Refresh after each step to make sure of the results Make sure that the network can access the controllers by using the ping command Use the following syntax ping lt controller P address gt If the network can access the controllers continue to step b If the network cannot access the controllers skip to step c Remove the storage array with the unresponsive status from MDSM and add that storage array again If the storage array returns to optimal status you have completed this procedure Examine the ethernet cables to make sure that you cannot see any damage and that they are tightly connected Make sure that the applicable network configuration tasks have been done for example the IP addresses have been assigned to each controller Troubleshooting Your Storage Array Software 245 5 Make sure that the controller firmware is compatible with MDSM on your management station If the controller firmware was upgraded the MDSM might not have access to the storage array A new version of MDSM might be needed to manage the storage array with the new version of the controller firmware If this problem exists see the Dell support website at support dell com 6 Look to see if there is too much network traffic to one or more controllers This problem corrects itself because the MDSM tries to re est
240. s and is in a composed of SED physical disks Non Secure state The Physical Disk Security menu appears in the Storage Array menu The Physical Disk Security menu has these options e Create Security Key e Change Security Key Save Security Key File e Validate Security Key e Unlock Drives 114 Configuration Disk Groups and Virtual Disks K NOTE If you have not created a security key for the storage array the Create Security Key option is active If you have created a security key for the storage array the Create Security Key option is inactive with a check mark to the left The Change Security Key option the Save Security Key option and the Validate Security Key option are now active The Secure Physical Disks option appears in the Disk Group menu The Secure Physical Disks option is active if these conditions are true The selected storage array is not security enabled but is comprised entirely of security capable physical disks e The storage array contains no snapshot base virtual disks or snapshot repository virtual disks e The disk group is in an Optimal state e A security key is set up for the storage array K NOTE The Secure Physical Disks option is inactive if these conditions are not true The Secure Physical Disks option is inactive with a check mark to the left if the disk group is already security enabled The Create a secure disk group option appears in the Create Disk Group Wizard Disk Group
241. s from the sides of the RAID controller module See Figure 16 9 While pressing the indent slide the cover in the direction of the arrow and lift it away from the RAID controller module See Figure 16 9 Management Installing Array Components Figure 16 9 Opening and Closing the RAID Controller Module 1 3 screws 2 2 RAID controller module indent Closing the RAID Controller Module A CAUTION Many repairs may only be done by a certified service technician You oF Ww N should only perform troubleshooting and simple repairs as authorized in your product documentation or as directed by the online or telephone service and support team Damage due to servicing that is not authorized by Dell is not covered by your warranty Read and follow the safety instructions that came with the product Place the cover onto the RAID controller module and offset it slightly towards the back so that the hooks on the cover fit over the corresponding slots on the RAID controller module Slide the cover toward the front till it snaps into place See Figure 16 9 Replace the screws on the RAID controller module See Figure 16 9 Connect all the cables to the array Turn on the array and the host server Management Installing Array Components 209 RAID Controller Module Backup Battery Unit Removing the RAID Controller Module Backup Battery Unit A CAUTION Many repairs may only be done by a certified service technician You shou
242. s greater than 31 already mapped The Default Group on the Mappings tab has a default host type You can change this type by selecting Storage Array Change Default Host Type If you set the default host type to a host type that is restricted the maximum number of LUNs that are allowed in the Default Group for any host are restricted to the limit imposed by the restricted host type If a particular host with a non restricted host type becomes part of a specific storage partition you are able to change the mapping to a higher LUN Changing the RAID Controller Module Ownership of a Virtual Disk or a Disk Group You can change the RAID controller module ownership of a virtual disk or a disk group You can change the RAID controller module ownership of a standard virtual disk or a snapshot repository virtual disk You cannot directly change the RAID controller module ownership of a snapshot virtual disk because the snapshot virtual disk inherits the RAID controller module owner of its associated source virtual disk Changing the RAID controller module ownership of a virtual disk changes the preferred RAID controller module ownership of the virtual disk During a virtual disk copy the same RAID controller module must own both the source virtual disk and the target virtual disk Sometimes both virtual disks do not have the same preferred RAID controller module when the virtual disk copy starts Therefore the ownership of the target virtual disk is
243. s it An initial mapping of the host group or host must be created using the Storage Partitioning Wizard before defining additional mappings See Storage Partitioning on page 136 To create host to virtual disk mappings 126 l Configuration Disk Groups and Virtual Disks In the AMW select the Mappings tab In the Topology pane select e Default Group e Undefined mappings node e Individual defined mapping e Host group e Host In the toolbar select Mappings Define Additional Mapping The Define Additional Mapping window is displayed In Host group or host select the appropriate host group or host All defined hosts host groups and the default group appear in the list NOTE When configuring an iSCSI storage array including the MD3200i or MD3220i if a host or a host group is selected that does not have a SAS host bus adapter SAS HBA host port defined a warning dialog appears In Logical unit number select a LUN The supported LUNs are 0 through 255 Select the virtual disk to be mapped in the Virtual Disk area The Virtual Disk area lists the names and capacity of the virtual disks that are available for mapping based on the selected host group or selected host Click Add K NOTE The Add button is inactive until a host group or host LUN and virtual disk are selected To define additional mappings repeat step 4 through step 7 K NOTE After a virtual disk has been mapped once it is no longer av
244. s shown in the following table are used in the Tree view the Table view and both the EMW Status Bar and the AMW Status Bar Table 19 2 Status Icon Status Icon Description Optimal Each component in the managed storage array is in the desired working condition Needs Attention There is a problem with the managed storage array that requires your intervention to correct it Unresponsive The storage management station cannot communicate with the storage array or one RAID controller module or both RAID controller modules in the storage array A Needs Attention status has been corrected and the managed storage array is currently transitioning to an Optimal state Fixing Status x 908 Unsupported The node is currently not supported by this version of MDSM Software TA The storage array is running a level of software that is Unsupported ly no longer supported by MDSM In the Table view every managed storage array is listed once regardless of the number of attachments it has in the Tree view After the storage array has been contacted by MDSM an icon representing its hardware status appears 226 Troubleshooting Your Storage Array Software Hardware status can be Optimal Needs Attention or Fixing If however all of the network management connections from the storage management station to the storage array shown in the Tree view are Unresponsive the storage array status is represented as Unresponsive In th
245. s that are associated with the storage array If you want to manage the host port identifiers for all hosts select All hosts from the list of hosts that are associated with the storage array If you are adding a new host port identifier go to step 4 If you are managing an existing host port identifier go to step 8 Click Add The Add Host Port Identifier dialog appears Select the method to add a host port identifier to the host You can select e Add by selecting a known unassociated host port identifier Select the appropriate host port identifier from the existing list of Known unassociated host port identifiers Configuration About Your Host 101 102 Add by creating a new host port identifier In New host port identifier enter the name of the new host port identifier In User label enter up to 30 character alphanumeric name In Associated with host select the appropriate host or host group Select the host port identifier that you would like to manage from the list of host port identifiers in the Host port identifier information area Perform one of these actions for the selected host port identifier To edit the host port identifier Select the appropriate host port identifier and click Edit the Edit Host Port Identifier dialog appears update User label and Associated with host and click Save To replace the host port identifier Select the appropriate host port identifier and click Replace the Replace Host
246. selected host groups For more information see the PowerVault Modular Disk Storage Manager online help topics Defining a Host You can use the Define Host Wizard in the AMW to define a host for a storage array Either a known unassociated host port identifier or a new host port identifier can be added K NOTE A user label must be specified before the host port identifier may be added the add button is disabled until one is entered To define a host 1 In the AMW select the Mappings tab and select the appropriate storage array 2 Perform one of the actions e Select Mappings gt Define Host e Select the Setup tab and click Manually Define Hosts 94 Configuration About Your Host 10 Select the Mappings tab Right click the root node storage array name Default Group node or Host Group node in the Topology pane to which you want to add the host and select Define Host from the pop up menu The Specify Host Name window is displayed In Host name enter an up to 30 character alphanumeric name Select the relevant option in Do you plan to use the storage partitions in the this storage array and click Next The Specify Host Port Identifiers window is displayed Select the relevant option to add a host port identifier to the host you can select e Add by selecting a known unassociated host port identifier In Known unassociated host port identifiers select the relevant host port identifier e Add by c
247. ses Check the Physical Disks to add enclosure slot area to make sure that the correct physical disks have been added Either accept the final capacity or enter or select the appropriate capacity in Increase capacity by Click OK The Logical tab is updated The snapshot repository virtual disk that is having its capacity increased shows a status of Operation in Progress In addition the snapshot repository virtual disk shows its original capacity and the total capacity being added The Free Capacity node involved in the increase shows a reduction in capacity If all of the free capacity is used to increase the size of the virtual disk the Free Capacity node involved is removed from the Logical tab A new Free Capacity node is created and shown in the Logical tab if these conditions exist e A Free Capacity node did not exist prior to the addition of capacity e Not all of the capacity that is added is used to increase the capacity of the snapshot repository virtual disk On the Physical tab the unassigned physical disks or unconfigured capacity that you added to increase the capacity of the snapshot repository virtual disk change to assigned physical disks The new assigned physical disks are associated with the disk group of the snapshot repository virtual disk l Configuration Premium Feature Snapshot Virtual Disks Re creating Snapshot Virtual Disks You can re create a snapshot virtual disk that you have previously d
248. sical disks enclosure loss protections cannot be achieved if your storage array has less than three expansion enclosures Because a RAID level 6requires a minimum of five physical disks enclosure loss protections cannot be achieved if your storage array has less than five expansion enclosures Ensure that each physical disk in a mirrored pair is located in a different expansion enclosure This enables you to have more than two physical disks in the disk group within the same expansion enclosure For example if you are creating a six physical disk disk group three mirrored pairs you could achieve enclosure loss protection with only two expansion enclosures by specifying that the physical disk in each mirrored pair are located in separate expansion enclosures This example shows this concept e Mirror pair 1 Physical disk in enclosure slot 1 and physical disk in enclosure 2 slot 1 e Mirror pair 2 Physical disk in enclosure slot 2and physical disk in enclosure 2 slot 2 e Mirror pair 3 Physical disk in enclosure slot 3and physical disk in enclosure 2 slot 3 Because a RAID level disk group requires a minimum of two physical disks enclosure loss protections cannot be achieved if your storage array has less than two expansion enclosures RAID level 0 does not have consistency you cannot achieve enclosure loss protection Configuration Disk Groups and Virtual Disks 125 Host to Virtual Disk Mapping Afte
249. since the time of the snapshot After the snapshot repository virtual disk is created I O write requests to the source virtual disk resume Before a data block on the source virtual disk is modified the contents of the block to be modified are copied to the snapshot repository virtual disk for safekeeping Because the snapshot repository virtual disk stores copies of the original data in those data blocks further changes to those data blocks write only to the source virtual disk The snapshot Configuration Premium Feature Snapshot Virtual Disks 145 repository uses less disk space than a full physical copy because the only data blocks that are stored in the snapshot repository virtual disk are those that have changed since the time of the snapshot When you create a snapshot virtual disk you specify its location capacity and other parameters You can disable or delete the snapshot virtual disk when it is not required If you disable a snapshot virtual disk you can re create and reuse it the next time you perform a backup For more information see Re creating Snapshot Virtual Disks on page 159 If you delete a snapshot virtual disk you also delete the associated snapshot repository virtual disk K NOTE Deleting a snapshot does not affect data on the source virtual disk K NOTE The following host preparation sections also apply when using the snapshot feature through the CLI interface Creating a Snapshot Virtual Disk Us
250. sk copy you must disable all snapshot virtual disks associated with the source virtual disk Multi Path Software Multi path software also referred to as the failover driver is software resident on the host server that provides management of the redundant data path between the host server and the storage array For the multi path software to correctly manage a redundant path the configuration must have redundant iSCSI connections and cabling The multi path software identifies the existence of multiple paths to a virtual disk and establishes a preferred path to that disk If any component in the preferred path fails the multi path software automatically re routes I O requests to the alternate path so that the storage array continues to operate without interruption K NOTE Multi path software available on the MD3200i series resource media Preferred and Alternate Controllers and Paths A preferred controller is a RAID controller module designated as the owner of a virtual disk or disk group The preferred controller is automatically selected by MDSM when a virtual disk is created You can change the preferred RAID controller module owner of a virtual disk after it is created If a host is only connected to only one RAID controller module the preferred owner must manually be assigned to the RAID controller module the host can access Ownership of a virtual disk is moved from the preferred controller to the secondary controller also ca
251. sk group Using this option changes the RAID levels of every virtual disk that comprises the disk group Performance might be slightly affected during the operation Keep these guidelines in mind when you change the RAID level of a disk group e You cannot cancel this operation after it begins e The disk group must be in Optimal status before you can perform this operation Your data remains available during this operation e If you do not have enough capacity in the disk group to convert to the new RAID level an error message appears and the operation does not continue If you have unassigned physical disks use the Disk Group gt gt Add Free Capacity Physical Disks option to add additional capacity to the disk group Then retry the operation To change the RAID level of a disk group 1 Select the Logical tab 2 Select the disk group 3 Select Disk Group Change RAID Level 4 Select the RAID level RAID Level 0 RAID Level 1 RAID Level 5 or RAID Level 6 The currently selected option is designated with a dot 5 Click Yes The RAID level operation begins Configuration Disk Groups and Virtual Disks 135 Storage Partitioning A storage partition is a logical entity consisting of one or more virtual disks that can be accessed by a single host or shared among hosts that are part of a host group The first time you map a virtual disk to a specific host or host group a storage partition is created Subsequent virtual disk mappi
252. st based utility for Windows platforms This utility is installed with MDSM Use this utility before and after you create a virtual disk copy on a Windows operating system to ensure that all the memory resident data for file systems on the target virtual disk is flushed and that the driver recognizes signatures and file system partitions You can also use this utility to resolve duplicate signature problems for snapshot virtual disks From a command prompt window on a host running Windows navigate to C Program Files Dell MD Storage Manager util and run the following command SMrepassist f lt filesystem identifier gt where f flushes all the memory resident data for the file system indicated by lt filesystem identifier gt and lt filesystem identifier gt specifies a unique file system in the following syntax drive letter lt mount point path gt The file system identifier might consist of only a drive letter as in the following example SMrepassist f E K NOTE In Windows the mount point path is a drive letter An error message appears in the command line when the utility cannot distinguish between the following e Source virtual disk and snapshot virtual disk for example if the snapshot virtual disk has been removed e Standard virtual disk and virtual disk copy for example if the virtual disk copy has been removed Troubleshooting Your Storage Array Software 243 Unidentified Devices An unide
253. structions you can find those instructions in your operating system documentation Re creating a Snapshot Virtual Disk After first preparing the host server s re create a snapshot virtual disk For more information see Preparing Host Servers to Create the Snapshot Using the Simple Path on page 147 or Preparing Host Servers to Create the Snapshot Using the Advanced Path on page 151 To recreate a snapshot virtual disk K 1 2 3 NOTE This action invalidates the current snapshot In the AMW select the Logical tab select a snapshot virtual disk Select Virtual Disk Snapshot Re create Type yes and click OK Re creating a snapshot repository virtual disk uses the previously configured snapshot name and parameters Configuration Premium Feature Snapshot Virtual Disks 161 162 Configuration Premium Feature Snapshot Virtual Disks Configuration Premium Feature Virtual Disk Copy K NOTE A virtual disk copy overwrites data on the target virtual disk Before starting a virtual disk copy ensure that you no longer need the data or back up the data on the target virtual disk K NOTE If you ordered this feature you received a Premium Feature Activation card that shipped in the same box as your Dell PowerVault MD storage array Follow the directions on the card to obtain a key file and to enable the feature K NOTE The preferred method for creating a virtual disk copy is to copy from a snapshot vir
254. system software framework known as Device Mapper DM to enable multipath capabilities on Linux Host Servers The DM multipath functionality is provided by a combination of drivers and utilities This chapter describes how to use those utilities to complete the process of enabling MD3200i Series storage array on a Linux system The Device Mapper technology replaces an earlier proprietary technology known as MPP MPP was used to enable multipathing for the previous MD generation MD3000 Series storage arrays K NOTE The required Device Mapper software components are installed on a Linux host server by running the MD3200i Series resource media installation program on the server and selecting either the Full or Host install option For detailed installation procedures please refer to the Dell PowerVault MD3200i and MD3220i storage arrays Deployment Guide Benefits of using DM Multipath include e Detects path failure and re routes I O to other available paths e Revalidates failed paths after path restoration e Utilizes multiple available paths to maximize performance e Reconfigures path usage based on path states and error conditions e Unifies multiple device nodes into a single logical multipath device node e Indentifies a new multipathed LU and automatically configures a new multipath node e Provides device name persistency for DM devices under dev mappet Configuration Device Mapper Multipath for Linux 177 Using DM Multipathin
255. t covered by your warranty Read and follow the safety instructions that came with the product Ensure that the following components are properly installed e Hard drives e RAID controller module s e Power supply cooling fan modules e Control panel e Backplane Ensure that all the cables are properly connected and that there are no damaged pins in the connectors Run diagnostics available in Dell PowerVault Modular Disk MD Storage Manager software In the AMW select a component in the Physical pane of the Physical tab Select Advanced Troubleshooting gt Run Diagnostics If the test fails see Getting Help on page 259 Troubleshooting Your Array Troubleshooting RAID Controller Modules Conditions Certain events can cause a RAID controller module to fail and or shut down Unrecoverable ECC memory or PCI errors or critical physical conditions can cause lockdown If your RAID storage array is configured for redundant access and cache mirroring the surviving controller can normally recover without data loss or shutdown Typical hard controller failures are detailed in the following sections Invalid Storage Array The RAID controller module is supported only in a Dell supported storage array Upon installation in the storage array the controller performs a set of validation checks The array status LED is lit with a steady amber color while the RAID controller module completes these initial tests and the c
256. t server before resetting the cables on the storage array or expansion enclosure If the problem is not resolved see Getting Help on page 259 Troubleshooting a Wet Storage Array A CAUTION Many repairs may only be done by a certified service technician You should only perform troubleshooting and simple repairs as authorized in your product documentation or as directed by the online or telephone service and support team Damage due to servicing that is not authorized by Dell is not covered by your warranty Read and follow the safety instructions that came with the product Turn off the array and disconnect all the cables Remove the following components from the array See Management Installing Array Components on page 197 Troubleshooting Your Array 255 e Hard drives e RAID controller modules e Power supply cooling fan modules e Control panel e Backplane Let the system dry thoroughly for at least 24 hours Reinstall the components you removed in step 2 Connect all the cables and turn on the array If the array does not start properly see Getting Help on page 259 Troubleshooting a Damaged Array A CAUTION Many repairs may only be done by a certified service technician 256 You should only perform troubleshooting and simple repairs as authorized in your product documentation or as directed by the online or telephone service and support team Damage due to servicing that is not authorized by Dell is no
257. the target array has finished importing all the disks in the disk group When you migrate a physical disk or a disk group from one MD3200i array to another the MD3200i array you migrate to recognizes any data structures and or metadata you had in place on the migrating MD3200i array However if you are migrating from any device other than a MD3200i Series Storage Array the MD3200i array does not recognize the migrating metadata and that data is lost In this case MD3200i initializes the physical disks and mark them as unconfigured capacity K NOTE Only disk groups and associated virtual disks with all member physical disks present can be migrated from one storage array to another It is recommended that you only migrate disk groups that have all their associated member virtual disks in an optimal state K NOTE The number of physical disks and virtual disks that a storage array supports limits the scope of the migration 48 Planning MD3200i Series Storage Array Terms and Concepts Use either of the following methods to move disk groups and virtual disks e Hot virtual disk migration Disk migration with the destination storage array power turned on e Cold virtual disk migration Disk migration with the destination storage array power turned off K NOTE To ensure that the migrating disk groups and virtual disks are correctly recognized when the target storage array has an existing physical disk use hot virtual disk migra
258. the target virtual disk is also removed After the virtual disk copy is removed from the Copy Manager you can either select the target virtual disk as a source virtual disk or the target virtual disk for a new virtual disk copy If you remove a virtual disk copy the source virtual disk and the target virtual disk no longer appear in the Copy Manager Keep these guidelines in mind when you remove copy pairs e Removing copy pairs does not delete the data on the source virtual disk or target virtual disk e Ifthe virtual disk copy has a status of In Progress you must stop the virtual disk copy before you can remove the copy pair To remove copy pairs 1 In the AMW select Virtual Disk Copy Copy Manager The Copy Manager window is displayed In the table select one or more copy pairs Select Copy Remove Copy Pairs The Remove Copy Pairs dialog appears 4 Click Yes 174 Configuration Premium Feature Virtual Disk Copy Configuration Premium Feature Upgrading to High Performance Tier The High Performance Tier premium feature on an MD32001 Series array increases the performance of the system beyond that of a MD3200i Series array operating at the standard performance level If this feature is ordered a Premium Feature Activation card is placed in the box with the storage array After reading the information below follow the directions on the card to obtain a key file and to enable the feature A CAUTION Loss of data ac
259. the trap destination in Trap destination and click Replace e Deleting an SNMP address Select the SNMP address in the Configured SNMP addresses area and click Delete e Validating an SNMP address Select the SNMP address in the Configured SNMP addresses area and click Test A test message is sent to the SNMP address A message box with the results of the validation and any error information appears 4 Click OK An alert icon appears next to each node in the Tree view for which an alert is set Follow these guideline for SNMP alerts e Any SNMP addresses that you had previously configured appear in the Configured SNMP addresses area The SNMP Community Name is determined by the system administrator and configured within the a management application such as the Dell Management Console More information about the Dell Management Console is available at dell com e You can configure multiple SNMP addresses before you click OK Battery Settings A smart battery backup unit BBU can perform a learn cycle The smart BBU module includes the battery a battery gas gauge and a battery charger The learn cycle calibrates the smart battery gas gauge so that it provides a measurement of the charge of the battery module A learn cycle can only start when the battery is fully charged The learn cycle completes the following operations e Discharges the battery to a predetermined threshold e Charges the battery back to full capacity
260. ticular managed device by copying the emwdata bin file to every storage management station from which you want to receive alerts Each managed device shows a check mark that indicates that alerts have been set Enabling or Disabling the Event Monitor You can enable or disable the event monitor at any time Disable the event monitor if you do not want the system to send alert notifications If you are running the event monitor on multiple systems disabling the event monitor on all but one system prevents the sending of duplicate messages Configuration Event Monitor 91 K NOTE It is recommended that you configure the event monitor to start by default on a management station that runs 24 hours a day Windows To enable or disable the event monitor 1 Click Start Settings Control Panel gt Administrative Tools gt Services or Click Start Administrative Tools Services 2 From the list of services select Modular Disk Storage Manager Event Monitor 3 Select Action Properties To enable the event monitor in the Service Status area click Start To disable the event monitor in the Service Status area click Stop Linux To enable the event monitor at the command prompt type SMmonitor start and press lt Enter gt When the program startup begins the system displays the following message SMmonitor started To disable the event monitor start terminal emulation application console ox xterm and at the
261. tion When attempting virtual disk migration follow these recommendations e Moving physical disks to the destination array for migration When inserting drives into the destination storage array during hot virtual disk migration wait for the inserted physical disk to be displayed in MDSM before inserting the next physical disk A WARNING Without the delay between drive insertions the storage array can become unstable and manageability is temporarily lost e Migrating virtual disks from multiple storage arrays into a single storage array W hen migrating virtual disks from multiple or different storage arrays into a single destination storage array move all of the physical disks from the same storage array as a set into the new destination storage array Ensure that all of the physical disks from a storage array are migrated to the destination storage array before starting migration from the next storage array K NOTE If the drive modules are not moved as a set to the destination storage array the newly relocated disk groups might not be accessible e Migrating virtual disks to a storage array with no existing physical disks Turn off the destination storage array when migrating disk groups or a complete set of physical disks from a storage array to another storage array that has no existing physical disks After the destination storage array has been turned on and has successfully recognized the newly migrated physical disks
262. to be matched is less than equal to or greater than the capacity entered in the GB box d Goto step 8 8 Click Find Next To see every node that matches the criteria click Find Next repeatedly If no matches are found the Search Failed dialog appears Click OK and re enter the search criteria 9 To close the dialog click Cancel To continue searching for nodes with the same criteria after the Find dialog has been closed press F3 Using Go To Use the Go To option to quickly jump to an associated snapshot repository virtual disk snapshot virtual disk source virtual disk or target virtual disk These virtual disks appear in the Logical pane of the Logical tab The Go To option is available only if the Snapshot premium feature or the Virtual Disk Copy premium feature is enabled or if snapshot virtual disks or virtual disk copies currently exist on the storage array The Go To option is not accessible from the Mappings tab of the Array Management Window 236 Troubleshooting Your Storage Array Software On the Logical tab of the AMW select one of these virtual disks and go to the indicated step e Snapshot virtual disk Go to step 2 e Snapshot repository virtual disk Go to step 3 e Source virtual disk Go to step 4 e Target virtual disk Go to step 5 Select View Go To Snapshot Virtual Disk The selection jumps to the associated snapshot virtual disk in the Logical pane Select View Go To Snapshot Re
263. torage Array Terms and Concepts If the storage array you are monitoring begins in or transitions to an unresponsive state an informational dialog appears The dialog informs you that the Performance Monitor cannot poll the storage array for performance data To monitor the performance of the arrays 1 2 Open MDSM and select the appropriate storage array Open the Array Management Window AMW for the selected storage array In the AMW select Storage Array Monitor Performance Click Settings a Select the items that you want to monitor You can monitor e RAID Controller modules e Virtual disks e Storage array totals K NOTE By default all items are selected b In Polling interval select how often you want to update the performance statistics K NOTE For an accurate elapsed time do not use the Set RAID Controller Module Clocks option while using the Performance Monitor Each time the polling interval elapses the Performance Monitor queries the storage array again and updates the statistics in the table Click Start Values appear for the selected storage arrays in the Performance Monitor data table The table is updated at the interval specified in the Polling Interval setting Click Update to force an immediate poll of the storage array Click Stop to stop monitoring the storage array Click Save As on the Performance Monitor main dialog to save the currently displayed performance statistics Select an
264. tual disk This allows the original virtual disk used in the snapshot operation to remain fully available for read write activity while the snapshot is used as the source for the virtual disk copy operation When you create a virtual disk copy you create a copy pair that has a source virtual disk and a target virtual disk on the same storage array The source virtual disk is the virtual disk that contains the data you want to copy The source virtual disk accepts the host I O read activity and stores the data until it is copied to the target virtual disk The source virtual disk can be a standard virtual disk a snapshot virtual disk or the source virtual disk of a snapshot virtual disk When you start a virtual disk copy all data is copied to the target virtual disk and the source virtual disk permissions are set to read only until the virtual disk copy is complete The target virtual disk is a virtual disk to which you copy data from the source virtual disk The target virtual disk can be a standard virtual disk or the source virtual disk of a failed or disabled snapshot virtual disk After the virtual disk copy is complete the source virtual disk becomes available to host applications for write requests To prevent error messages do not attempt to access a source virtual disk that is participating in a virtual disk copy while the virtual disk copy is in progress Reasons to use virtual disk copy include Configuration Premium Featur
265. u 4 Click Yes to remove the mapping Changing the RAID Controller Module Ownership of a Disk Group You can change the RAID controller module ownership of a a disk group You can change the RAID controller module ownership of a standard virtual disk or a snapshot repository virtual disk You cannot directly change the RAID controller module ownership of a snapshot virtual disk because the snapshot virtual disk inherits the RAID controller module owner of its associated source virtual disk Changing the RAID controller module ownership of a virtual disk changes the preferred RAID controller module ownership of the virtual disk During a virtual disk copy the same RAID controller module must own both the source virtual disk and the target virtual disk Sometimes both virtual disks do not have the same preferred RAID controller module when the virtual disk copy starts Therefore the ownership of the target virtual disk is automatically transferred to the preferred RAID controller module of the source virtual disk When the virtual disk copy is completed or is stopped ownership of the target virtual disk is restored to its preferred RAID controller module If ownership of the source virtual disk is changed during the virtual disk copy ownership of the target virtual disk is also changed Under certain operating system environments it might be necessary to reconfigure the multi path driver before an I O path can be used To change the RAID cont
266. ule Blank Removing a RAID Controller Module Installing a RAID Controller Module Opening the RAID Controller Module Closing the RAID Controller Module RAID Controller Module Backup Battery Unit Contents 13 Removing the RAID Controller Module Backup Battery Unit 210 Installing the RAID Controller Module Backup Battery Unit 211 Power Supply Cooling Fan Module 211 Removing a Power Supply Cooling FanModule 211 Installing a Power Supply Cooling FanModule 214 ControlPanel 215 Removing the Control Panel 215 Installing the Control Panel 216 Backplane 00 217 Removing the Backplane 217 Installing the Backplane 220 17 Management Firmware Inventory 221 Viewing the Firmware Inventory 221 18 Management System Interfaces 223 Microsoft Services 223 Virtual Disk Service 223 Volume Shadow Copy Service 223 19 Troubleshooting Your Storage Array Software 225 Start Up Routine 225 14 Contents Device Health Conditions Storage Array SupportData Automatically Collect the Support Bundle Data Collecting the Physical Disk Data Event Log oie Ss 8 See ee ae e a RecoveryGuru 004
267. upports one snapshot only You cannot select a snapshot repository virtual disk as a source virtual disk or as a target virtual disk in a virtual disk copy If you select a Snapshot source virtual disk as the target virtual disk of a virtual disk copy you must disable all snapshot virtual disks associated with the source virtual disk A CAUTION Before using the Snapshot Virtual Disks Premium Feature in a Windows Clustered configuration you must map the snapshot virtual disk to the cluster node that owns the source virtual disk This ensures that the cluster nodes correctly recognize the snapshot virtual disk Mapping the snapshot virtual disk to the node that does not own the source virtual disk before the snapshot enabling process is completed can result in the operating system misidentifying the snapshot virtual disk This can result in data loss or an inaccessible snapshot For details on mapping the snapshot virtual disk to the secondary node refer to the Dell PowerVault MD3200i and MD3220i Storage Arrays With Microsoft Windows Server Failover Clusters on support dell com manuals Virtual Disk Copy Virtual disk copy is a premium feature you can use to e Back up data e Copy data from disk groups that use smaller capacity physical disks to disk groups using greater capacity physical disks e Restore snapshot virtual disk data to the source virtual disk Virtual disk copy generates a full copy of data from the source virtual
268. ur network It also provides a GUI wizard for establishing the iSCSI sessions to the array 4 Create and map virtual disks using MDSM After configuring the arrays using the Modular Disk Configuration Utility run the Modular Disk Storage Manager to create and map virtual disks Using the MDSM software 1 Map the host server to the MD3200i Series storage array 2 Create the Virtual Disks 3 Map newly created arrays to your host server 178 Configuration Device Mapper Multipath for Linux K NOTE Any arrays configured with MDCU automatically adds to the list of Devices in the PowerVault Modular Disk Storage Manager Enterprise Management Window EMW Device Mapper Configuration Steps To complete the DM multipathing configuration and make storage available to the Linux host server 1 Scan for virtual disks See Scan for newly added Virtual Disks on page 179 2 Display the multipath device topology See Display the multipath device topology using the multipath command on page 180 3 Create a partition on a multipath device node See Create a New fdisk Partition on a Multipath Device Node on page 181 4 Adda partition to DM See Add a new Partition to Device Mapper on page 181 5 Create a file system on a DM partition See Create a file system on a Device Mapper Partition on page 182 6 Mount a DM partition See Mount a Device Mapper Partition on page 182 The following instructions show how to complete each of
269. urce virtual disk Select Virtual Disk Snapshot Create Alternatively you can right click the source virtual disk and select Create Snapshot Virtual Disk from the pop up menu The Create Snapshot Virtual Disk Wizard Introduction dialog appears 4 Select Advanced and click Next The Specify Names window is displayed 5 Enter the Snapshot visual disk name and the Snapshot repository virtual disk name and click Next The Allocate Capacity window is displayed 6 In the Capacity allocation area select e Free capacity on same disk group as base recommended e Free capacity on different disk group e Unconfigured capacity create new disk group 7 Enter the snapshot repository virtual disks capacity as a percentage of the source virtual disks capacity and click Next The Specify Virtual Disk Parameters window is displayed Configuration Premium Feature Snapshot Virtual Disks 153 10 11 12 13 14 15 In the Snapshot virtual disk parameters area select the relevant mapping option you can select e Automatic e Map later with Storage Partition In the Snapshot repository virtual disk parameters area enter the system behavior when e The snapshot repository virtual disk is full to the selected percentage level e The snapshot repository virtual disk is full Click Next The Preview window containing the summary of the snapshot virtual disk is displayed Click Finish The Completed window is displayed
270. urce virtual disk capacity The maximum percentage allowed is 120 percent Using the simple path the following defaults are used for the other parameters of a snapshot virtual disk e Capacity Allocation The snapshot repository virtual disk is created using free capacity on the same disk group where the source virtual disk resides e Host to Virtual Disk Mapping The default setting is Map now e Percent Full When the snapshot repository virtual disk reaches the specified repository full percentage level the event is logged in the Major Event Log MEL The default snapshot repository full percentage level is 50 percent of the source virtual disk e Snapshot Repository Virtual Disk Full Conditions When the snapshot repository virtual disk becomes full you are given a choice of failing write activity to the source virtual disk or failing the snapshot virtual disk Preparing Host Servers to Create the Snapshot Using the Simple Path K NOTE Before using the Snapshot Virtual Disks Premium Feature in a Microsoft Windows clustered configuration you must first map the snapshot virtual disk to the cluster node that owns the source virtual disk This ensures that the cluster nodes correctly recognize the snapshot virtual disk K NOTE Mapping the snapshot virtual disk to the node that does not own the source virtual disk before the Snapshot enabling process is completed can result in the operating system mis identifying the snaps
271. ure should have the same product ID 3 Click Select File The Select Environmental EMM Card Firmware File dialog appears Select the file to download and click OK 5 Click Start Click Yes to continue with the firmware download K NOTE If you click Stop while a firmware download is in progress the download in progress finishes before the operation stops The status for the remaining expansion enclosures changes to Canceled 7 Monitor the progress and completion status of the download to the expansion enclosures The progress and status of each expansion enclosure that is participating in the download appears in the Status column of the Select enclosures table K NOTE Each firmware download can take several minutes to complete 8 Perform one of these actions depending on whether the download succeeded Management Firmware Downloads 195 e The download succeeded The statuses of all the expansion enclosures show Complete You can close the Download environmental EMM Card Firmware dialog by clicking Close The expansion enclosure EMM cards are now operating with the new firmware e The download failed The status of one expansion enclosure shows Failed and the remainder of the expansion enclosures show Canceled Make sure that the new firmware file is compatible before attempting another firmware download Self Monitoring Analysis and Reporting Technology SMART Self Monitoring Analysis and Reporting Technology
272. use the command line interface to download and activate the firmware to several storage arrays by using a script Refer to the PowerVault Modular Disk Storage Manager online help topics for more information on the command line interface Management Firmware Downloads 187 Downloading Both RAID Controller and NVSRAM Firmware NOTE 1 0 to the array can continue while you are upgrading RAID controller and NVSRAM firmware K NOTE Dell recommends that the firmware and NVSRAM be upgraded during a maintenance period when the array is not being used for 1 0 K NOTE The RAID enclosure must contain at least two disk drives in order to update the firmware on the controller To download RAID controller and NVSRAM firmware in a single operation 1 188 If you are using the EMW go to step 9 If you are using the AMW go to step 2 Perform one of these actions e Select Advanced Maintenance gt Download RAID Controller Module Firmware e Select the Support tab and click Download Firmware In Select download task select the Download RAID controller module firmware and click OK K NOTE The RAID Controller Module Firmware area and the NVSRAM area list the current firmware and the current NVSRAM versions respectively To locate the directory in which the file to download resides click Select File next to the Selected RAID controller module firmware file text box In the File Selection area select the file to downl
273. ve a host from the Topology pane on the Mappings tab of the Array Management Window For more information see Removing a Host Group on page 98 Moving a Host to a Different Host Group To move a host to a different host group 1 In the AMW select the Mappings tab select the host node in the Topology pane 2 Perform one of these actions e Select Mappings gt Move e Right click the host node and select Move from the pop up menu The Move Host dialog appears 3 In the Select host group select the host group to which you want to move the host The Move Host Confirmation dialog appears Configuration About Your Host 97 4 Click Yes The host is moved to the selected host group with the following mappings e The host retains the specific virtual disk mappings assigned to it e The host inherits the virtual disk mappings assigned to the host group to which it is moved e The host loses the virtual disk mappings assigned to the host group from which it was moved Removing a Host Group To remove a host group 1 In the AMW select the Mappings tab select the host node in the Topology pane 2 Perform one of these actions Select Mappings Remove e Right click the host node and select Remove from the pop up menu The Remove dialog is displayed 3 Click Yes The selected host group is removed For more information see the PowerVault Modular Disk Storage Manager online help topics Host Topology Host to
274. ve letter of the associated virtual disk in Windows or unmounting the virtual drive in Linux helps to guarantee a stable copy of the drive for the Snapshot Before re creating a snapshot virtual disk both the host server and the associated virtual disk you are re creating have to be in the proper state To prepare your host server and virtual disk 1 2 160 Stop all I O activity to the source and snapshot virtual disk if mounted Using your Windows system flush the cache to both the source and the snapshot virtual disk if mounted At the host prompt type SMrepassist f lt filename identifier gt and press lt Enter gt For more information see SMrepassist Utility on page 243 l Configuration Premium Feature Snapshot Virtual Disks 3 K Click the Summary tab then click Disk Groups amp Virtual Disks to ensure that the snapshot virtual disk is in Optimal or Disabled status Remove the drive letter s of the source and if mounted snapshot virtual disk in Windows or unmount the virtual drive s in Linux to help guarantee a stable copy of the drive for the Snapshot If this is not done the snapshot operation reports that it has completed successfully but the snapshot data is not updated properly Follow any additional instructions for your operating system Failure to follow these additional instructions can create unusable snapshot virtual disks NOTE If your operating system requires additional in
275. y key provides read and write access to the physical disks while the physical disk encryption key on each physical disk is used to encrypt the data A security capable physical disk works like any other physical disk until it is security enabled Configuration Disk Groups and Virtual Disks 113 Whenever the power is turned off and turned on again all of the security enabled physical disks change to a security locked state In this state the data is inaccessible until the correct security key is provided by a RAID controller module You can view the self encrypting disk status of any physical disk in the storage array from the Physical Disk Properties dialog The status information reports whether the physical disk is e Security Capable e Secure Security enabled or disabled Read Write Accessible Security locked or unlocked You can view the self encrypting disk status of any disk group in the storage array The status information reports whether the storage array is e Security Capable Secure The following table shows how to interpret the security status of a disk group Table 10 1 Interpretation of Security Status of Disk Group Secure Security Capable Yes Security Capable No Yes The disk group is composed of all Not applicable Only SED SED physical disks and is in a physical disks can be in a Secure Secure state state No The disk group is composed of all The disk group is not entirely SED physical disk
276. ystem Check the hard drives and the backplane to ensure that the connectors are not damaged Reinstall the hard drive Reboot the host server If the problem is not resolved proceed to step 5 Verify that the RAID controller module port link status LED and the RAID controller module status LED are solid green for each port that is connected to a cable Replace the failed physical disk If the problem persists see Troubleshooting Loss of Communication on page 249 or see Getting Help on page 259 Troubleshooting Your Array Troubleshooting Array and Expansion Enclosure Connections 1 Verify that the RAID controller module port link status LED and the RAID controller module status LED are solid green for each port that is connected to a cable If the LEDs are not solid green see Planning RAID Controller Modules on page 31 Ensure that all the cables are attached correctly according to expansion enclosure mode you selected Turn off the server storage array and expansion enclosures Reseat the RAID controller module and reconnect cables on the storage array and the server Turn on the expansion arrays and then the storage array and wait until the system is fully booted Turn on the server Check the link status LED If the link status LED is not green replace the cables If the problem is not resolved see Getting Help on page 259 Reboot the host server K NOTE You must turn off the hos

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