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RAID Manager 6.1 User's Guide

1. _ 0 000 0000006000000000000000000006 00000000000000000005 0000000000000000 FIGURE 2 1 A RAID Module RAID Manager 6 1 User s Guide October 1997 Drive Group A drive group is a physical set of drives in the RAID Module FIGURE 2 2 Drive groups are defined during configuration You perform all configuration tasks for example LUN creation deletion and hot spare creation on a RAID Module and its associated drive groups The drive groups are identified in the Drive Groups area of the main Configuration window There are three types of drive groups m An unassigned drive group has not been configured into LUNs or hot spares This drive group is displayed only in the Drive Groups area of the Configuration Application main window m A hot spare drive group has been assigned as hot spares This drive group is displayed only in the Drive Groups area of the Configuration Application main window m A configured drive group has been configured into one or more LUNs with the same RAID Level Each configured drive group is designated with a number for example 1 2 3 and so on These drive groups are displayed by number in all applications Logical Unit A logical unit LUN is the basic structure you create on the RAID Modules to store and retrieve data A LUN spans one or more drives and is configured into either RAID Level 0 1 3 or 5 More than one LUN may reside within a drive group and all LUNs in the sam
2. Logical Units Provides options for manually performing specific LUN recovery operations such as format and revive Controller Pairs Provides options for manually performing specific controller pair recovery operations such as placing controllers offline or online Gives you access to Online Help topics for all applications Enables you to select a specific RAID Module or All RAID Modules before selecting the option you want to perform Enables you to select or find a specific RAID Module add or remove RAID Modules or edit the information module name controller information independent controllers and comments about a RAID module Flashes the activity lights on the drive canisters in the selected RAID Module to identify the module s location Provides information about the controllers drives and LUNs for the selected RAID Module page 42 page 30 page 129 page 135 page 140 page 30 page 33 page 33 page 36 page 37 110 RAID Manager 6 1 User s Guide October 1997 TABLE 5 41 Main Recovery Window Elements Continued Window Element Description Procedures Recovery Guru Performs an immediate check of the selected RAID page 118 Module s and displays the operating status for each module Also provides step by step instructions to fix failures Manual Parity Lists LUNs for the selected RAID Module s and page 125 Check Repair enables you to run parity check repair on one or
3. Chapter 4 Using the Status Application 105 From left to right the points on the Slider bar indicate the following reconstruction rates blocks seconds delay Slow 256 0 8 Slow medium 256 0 4 Medium 512 0 4 Medium fast 512 0 2 Fast 1024 0 1 106 RAID Manager 6 1 User s Guide October 1997 CHAPTER 5 Using the Recovery Application m Recovering From Failures on a RAID Module page 111 m Checking for Component Failures Using Recovery Guru page 118 m Manually Checking and Repairing Parity page 125 m Performing Manual Recovery for Drives page 129 m Performing Manual Recovery for LUNs page 135 m Performing Manual Recovery for Controller Pairs page 140 a wr 107 Overview Use the Recovery Application to restore RAID Module s to an Optimal operating status after any component failure Specifically Recovery Guru analyzes each RAID Module s configuration and provides step by step procedures to ensure that you correct the right problem Use the Recovery Application to accomplish the following tasks m Check selected RAID Modules for failures and then recover from these failures by following the step by step instructions that Recovery Guru provides m Check and repair parity manually on selected LUNs m Perform recovery steps manually for drives LUNs and controller pairs In most cases however you should select Recovery Guru and follow the step by step instructio
4. TABLE 4 8 Result Module s Health Status RAID Module Health Status Results Continued Description Drive Tray Temp Exceeded Environmental Card Failure Hot Spare Failure Multiple Drive Failure Multiple Offline Failed Drives The maximum critical temperature allowed within a disk drive tray has been exceeded Caution This is a critical condition that may cause the drive tray to be automatically turned off if you do not resolve this condition within a short time Indicates loss of communication with an environmental card in one of the disk drive trays Important Use Recovery Guru to fix this failure type first and not for correcting any associated channel or drive failures A hot spare drive has failed while being used in a LUN More than one drive has failed in a drive group Indicates that the controller has placed one or more drives Offline because data reconstruction failed and a read error occurred for one or more failed drives in the LUN Multiple Indicates that multiple drives in the selected RAID Module are no Unresponsive longer accessible to the controller Drives Unresponsive Indicates that a drive in the selected RAID Module is no longer Drive accessible to the controller Optimal All components are functioning normally Module Some component power supply or fan has failed Component Failure TABLE 4 9 Health Check Show Details Window Elements Window Elements D
5. What Happens You can create new logical units drive groups from unassigned drives or from existing drive groups that have remaining capacity You can choose to quickly and easily create LUNs of equal capacity you specify only RAID Level number of drives and number of logical units or you can define additional logical unit parameters using Create LUN Options such as segment size capacity and drive selection Chapter 3 Using the Configuration Application 55 56 Check For Restrictions See the RAID Manager Installation and Support Guide for restrictions and Chapter 7 for troubleshooting information that might apply when creating LUNs For example to determine m If your operating system has special requirements in order to recognize the new configuration such as adding a drive or rebooting after any configuration changes m When the unassigned drive group contains drives of different capacities See Drive Selection for more details a If you are creating LUNs on more than one drive group after deleting all LUNs To Create or Add LUNs Ensure that the RAID Module you want is selected For instructions on how to select a RAID Module see Chapter 2 Do one of the following a For anew LUN drive group highlight the unassigned drive group from the Drive Groups area Note When you create LUNs from the unassigned drive group you also create a corresponding drive group a For anew LUN on an existi
6. The collection of applications allows you to perform all the necessary RAID Management tasks RAID Manager qualab133 Configuration Status Recovery Maintenance About Tunina FIGURE 1 1 Application Icons FIGURE 1 2 shows a list of the tasks within each application A brief overview of these applications is provided in TABLE 1 1 All applications share some common tasks Select Module Locate Module Module Profile and Save Module Profile Information and procedures for these commons tasks are in Chapter 2 6 RAID Manager 6 1 User s Guide October 1997 Applications SB Ee Configuration Status Recovery List Locate Drives Recovery Guru Create LUN Manual Parity Create Hot Spare Check Repair Delete Drive Groups LUNs or Hot Spares y Manual Recovery Message Log Health Check LUN Reconstruction FIGURE 1 2 Program Applications amp Maintenance Tuning Y LUN Reconstruction Rate LUN Balancing Controller Mode Caching Parameters Firmware Upgrade Options Automatic Parity Chapter 1 Program Application Overview About Software Version Information 7 TABLE 1 1 Application Descriptions Program Application Options Tasks You Can Perform Refer To Options Common Across all Applications Each application has an area near the top of the window that has the following options Help Access online
7. more LUNs with Optimal statuses Status Line Provides information about an option when you move the mouse over the option button For top menu options you must click on the option and hold down the left mouse button Note Some options on the main Recovery window may be dimmed out if you select All RAID Modules OR The RAID Module you selected does not meet the requirements for performing that option Recovering From Failures on a RAID Module Ideally your RAID Modules are operating normally thus status information reported for modules LUNs drives and controllers is Optimal However if a module has operating problems you may notice error messages on your console or in Message Log Therefore any time you suspect a component problem or failure select Recovery Guru Caution Always select Recovery Guru before attempting any manual recovery procedure Incorrectly performing a procedure or performing the wrong procedure could cause equipment damage or data loss Recovery Guru takes you through every step and includes checks to make sure that you are correcting the right problem Chapter 5 Using the Recovery Application 111 112 Benefits of Recovery Guru The proper procedure for recovering from a component failure depends on many different things For example restoring LUNs to an Optimal status depends on the RAID Level of the affected LUN and the number of drives that have failed in the same
8. For example if rmlog 1log is the current default log it continues to have messages written to it Thus if you do not delete the contents it continues to be too large Refreshing Message Log When to Use Use this top menu option to update Message Log with any new messages for RAID Module events that have occurred since you opened the current log You may want to refresh when you stay in Message Log any longer than your checking interval the default is five minutes v To Refresh Message Log If you are not in Message Log this option is not available dimmed Chapter 4 Using the Status Application 91 Choose Refresh All from the Options menu Message Log displays new messages for any RAID events that occurred since you first selected Message Log Note All message types are again displayed If you want to change the types of messages displayed see Listing Different Types of Messages on page 87 Changing Log Settings When to Use Use this top menu option to change default settings for the three log parameters described in TABLE 4 5 Use the descriptions in TABLE 4 5 to determine if you want to change these settings 92 RAID Manager 6 1 User s Guide October 1997 TABLE 4 5 Options Log Settings Window Description Window Element Description Log Parameters Default Log File Log Size Before Notification Check RAID Module Every Why To Use If you want the data logged into a diff
9. From the top menu select File gt Save Module Profile to save all of the Module Profile information for the RAID Module you want to change You can use this information as a reference when you are creating new LUNs 2 Back up the data on all the LUNs you want to delete 3 Use Delete to delete the individual LUN in the drive group If there is more than one LUN on the drive group then deleting an individual LUN gives remaining capacity for the existing drive group However if there is only one LUN on the drive group the drive group is also deleted and the drives are returned to the unassigned drive group 4 Use Create LUN to recreate the LUN on the existing drive group or the unassigned drive group Caching Parameters No you will not lose data Use Caching Parameters in the Maintenance Tuning Application LUN Assignment No you will not lose data Use LUN Balancing in the Maintenance Tuning Application Reconstruction Rate No you will not lose data Use LUN Reconstruction Rate in the Maintenance Tuning Application Chapter 3 Using the Configuration Application 68 Creating Hot Spare Drives Create Hot Spare When to Use Use this option to create hot spare drives from unassigned drives These drives contain no data and act as standbys in case any drive fails in a RAID 1 3 or 5 LUN in the RAID Module The hot spare drive adds another level of redundancy to yo
10. correcting drive failures 115 correcting failures 26 111 118 Recovery Application File menu 110 Manual Parity Check Repair 125 Manual Recovery Controller Pairs 140 Drives 129 Logical Units 135 Options menu 110 options summary 9 overview 108 Recovery Guru 118 task summary chart 12 troubleshooting general 204 Manual Parity Check Repair 207 Manual Recovery 207 Recovery Guru 206 Recovery Guru benefits 112 check not performed 206 example of using 115 failure types possible 122 Fixed described 120 main screen 119 procedures 121 removing modules from configuration 191 troubleshooting 206 what happens 118 when to use 118 Refresh All delay in updating Message Log 199 procedures 91 updating Message Log 91 when to use 91 remaining capacity defined 187 displayed for drive group 50 less than expected 197 removing RAID Modules 35 replaced drive status 113 replacing controllers see Recovery Guru Reset Configuration procedures 75 what happens 75 when to use 75 186 restrictions configuration 196 performing manual recovery for controller pairs 140 Index 223 drives 129 logical units 135 swapping controller modes 165 upgrading controller firmware 172 211 reviving a drive manually procedures 134 when to use 134 reviving logical units manually procedures 139 when to use 138 rmevent see command line utilities rmparams see command line utilities rmscript see command lin
11. gt Drives is most likely Unresponsive If the drives receive any I O the controller will fail them You may want to determine which drives are Unresponsive then if you want to manually fail them use Options gt Manual Recovery gt Drives The controller is unable to communicate with a drive in the selected RAID Module Important If you see this result the drive status in Module Profile gt Drives is most likely Unresponsive If the drive receives any I O the controller will fail it You may want to determine which drive is Unresponsive then if you want to manually fail it use Options gt Manual Recovery gt Drives RAID Manager 6 1 User s Guide October 1997 TABLE 5 6 Possible Failure Types Continued Failure Type Probable Cause Drive Trays Drive Tray Fan A fan in one of the disk drive trays has failed Failure Replace the fan as soon as possible to keep the drives from overheating Drive Tray Fan Both fans in one of the disk drive trays have failed Failures Replace the fans as soon as possible to keep the drives from overheating Drive Tray A power supply in one of the disk drive trays has failed Pwr Supp Failure Replace the power supply as soon as possible because a failure to a second power supply may cause the drive tray to shut down Drive Tray Both power supplies in one of the disk drive trays has failed Pwr Supp Failures Replace the power supplies as soon as possible the dr
12. in the selected RAID Module by an A or B designation and where applicable includes a system device name The A and B are relative names to identify the controllers Serial Number Identifies the controller by a number assigned by the manufacturer Mode Identifies the operating state of the controller Possible modes are Active Passive or Offline You can also see Inaccessible with these statuses if the RAID Module has an independent controller configuration Caution If you do not see Mode information or other information in this screen is incomplete there may be a problem on the data path Select Recovery Guru and correct any problems indicated Number of Indicates how many LUNs are owned by the particular controller LUNs Disk Drives Indicates how many drives make up the selected RAID Module Detailed Controllers See TABLE 2 6 for window details Information Drives See TABLE 2 7 for window details LUNs See TABLE 2 8 for window details To View a Module Profile You can view a profile on only one RAID module at a time If you choose All RAID Modules this option is dimmed and not selectable Ensure that the RAID Module you want is selected For instructions on how to select a RAID Module see Selecting a Module Click Module Profile The Module Profile window is displayed FIGURE 2 7 Click Controllers Drives or LUNs to obtain more detailed information on each You
13. m If both controllers in the RAID Module do not have the same or the minimum required processor and cache size RAID Manager 6 1 User s Guide October 1997 a If you select a RAID Module with only one controller write cache mirroring is dimmed This parameter is only available for modules with redundant controller pairs that have the same cache size Ensure that the RAID Module you want is selected If you need instructions for selecting a RAID Module see page 33 before proceeding Select Caching Parameters The Main Caching Parameters window is displayed FIGURE 6 7 Click in the check boxes to enable disable caching parameters as desired for any or all LUNs on the selected RAID Module TABLE 6 7 shows the interdependencies that these parameters share Caution Any changes you make do not take effect until you click Save Select Save to change the parameters as you set them in Step 2 TABLE6 7 Caching Parameter Interdependencies If you select The following parameters are also enabled Write Caching Write Cache Cache Without Mirroring Batteries Write Cachin 5 On On Write Cache On On Mirroring Cache Without On On Batteries If you unselect The following parameters are also disabled Write Caching Write Cache Cache Without Mirroring Batteries Write Cachin 8 Off Off Off Write Cache Off Mirroring Cache Without Off Batteries If you select a RAID Module with only one controller W
14. number of drives you select Remember that all RAID Levels except RAID 0 use part of the drive group s capacity for redundancy Important Use all the available capacity when you configure LUNs drive groups If a RAID Module contains drives with different capacities see the RAID Manager Installation and Support Guide for additional troubleshooting tips How many hot spare drives can I configure Each RAID Module can support as many hot spare drives as there are SCSI Channels probably either 2 or 5 depending on the model of your RAID Module You can select any drive from the unassigned drive group to be a hot spare Caution e Hot spares cannot cover for drives with a larger capacity that is a 2 GB hot spare drive cannot stand in for a 4 GB failed drive e It is not recommended to place all your hot spares on the same drive channel If the drive channel were to fail these drives would be unable to cover for other failed drives in the RAID Module Chapter 7 Common Questions and Troubleshooting 187 188 TABLE 7 1 Frequently Asked Questions Continued Common Questions All Applications What can I do during LUN creation formatting You can perform other Configuration tasks such as creating LUNs on another drive group or select another application while the LUN is being created because the creation format occurs in the background However you cannot select the drive group that is being created until the format
15. 08 01 1997 796 qualab133_001 Hardware cOt4d3s0 y 08 01 1997 796 qualab133_001 Hardware cOt4d3s0 07 31 1997 796 qualab133_001 Hardware cit5Sdd0so 07 31 1997 796 qualab133_001 Hardware cOt4d3s0 07 29 1997 3293 qualab133_001 Hardware c1t5d0s0 07 29 1997 3293 qualab133_001 Hardware cOt4d6s0 07 29 1997 3293 qualab133_001 Hardware cOt4d5s0 07 29 1997 7253 qualab133_001 Hardware c t4d4s0 07 29 1997 255 qualab133_001 Hardware c t4d3s0 07 29 1997 qualab133_001 Hardware cit5Sdd0so Show Details IF Select All List Type Help Current Log rmlog log Total Messages in Log 35 Total Selected 1of 35 Message Log FIGURE 4 1 Main Status Window Chapter 4 Using the Status Application 79 TABLE 4 1 Main Status Window Description Window Element Description Procedures File Edit Options Help RAID Module Selection Box Select Module Locate Module Gives you four options Open Log Opens a selected log file and displays the information in the Message Log Save Log As Saves information from a selected log file to another file name when you are in Message Log Save Module Profile Saves profile information for a selected RAID Module to a file Exit Quits Status Gives you two options Copy To Clipboard Copies the contents of a detailed message to a clipboard when you are in either Message Log or Health Check Show Details Select All Selects all the me
16. 10 To download NVSRAM files type the path information in the path box and click OK Continue with Step 10 m To select controller firmware highlight the version level you want to download It is recommend that the version line you select has both Firmware Level and Bootware Level versions specified a The path box updates to show the file names associated with the version you selected Click OK when the correct version level is highlighted Either you receive notification if some problem occurs or you have a final confirmation that the upgrade process is about to begin Caution Once you click OK at the Firmware is about to start prompt do not select any other options or exit the Maintenance Tuning Application until the upgrade process is complete You can however monitor the upgrade progress Click OK and follow the upgrade process A histogram for the selected RAID Module indicates the progress of downloading the NVSRAM or firmware files This graphic shows the amount of progress as a percentage and starts over at 0 for each file if you have more than one If you selected All RAID Modules the module number updates as each module begins its upgrade process When the NVSRAM download or the firmware upgrade is finished a confirmation box is displayed indicating whether the upgrade is Successful or Failed TABLE 6 9 shows the information this window displays Note Once you click OK at the Firmware is abou
17. 101 122 fan dual failures on drive tray 100 123 failure on drive tray 100 123 fault light controllers 143 drives 204 recovering 118 features common navigation 27 tasks 28 to all applications 17 fibre channel level displayed 175 File menu Configuration 48 75 location 29 Maintenance Tuning 148 online help 32 Open Log 88 Recovery 110 Reset Configuration 75 Save Log As 90 Save Module Profile 42 Status 80 files about this software 14 firmware 170 log files default 93 opening 88 saving 90 see also command line utilities filter described 44 90 firmware bootware level 40 file error message 211 level displayed 40 175 see also Firmware Upgrade Firmware Upgrade before you begin 170 blank screen 174 compatible files versions screen 174 determining success of procedure 177 files needed 170 how long it takes 210 progress 176 restrictions 172 211 see also command line utilities selecting controllers 171 troubleshooting 210 what happens 170 when to use 170 fixing component problems 118 flashing lights see List Locate Drives see Locate Module Format see formatting logical units formatting logical units format fail 198 how long it takes 188 manually procedures 138 when to use 137 status 114 fwcompat def file 171 fwutil see also command line utilities G general message type details 86 glossary online help 33 group capacity configured drives 155 Guru rec
18. 36 Viewing A Module Profile 37 Saving Module Profile Information 42 Using the Configuration Application 45 Overview 46 v To Start the Configuration Application 47 List Locate Drives 52 When to Use 52 What Happens 52 v____To List or Locate a Drive Group 53 Creating Logical Units LUNs 55 When to Use 55 What Happens 55 Check For Restrictions 56 RAID Manager 6 1 User s Guide October 1997 v ToCreate or Add LUNs 56 Changing LUN Parameters 66 When to Use 66 What Happens 66 Creating Hot Spare Drives 68 When to Use 68 What Happens 68 v ToCreate a Hot Spare Drive 69 Deleting Drive Groups LUNs or Hot Spare Drives 71 When to Use 71 What Happens 72 v To Delete Drive Groups LUNs or Hot Spare Drives 72 Resetting the Configuration 75 When to Use 75 What Happens 75 To Reset the Configuration 75 Using the Status Application 77 Overview 78 v ToStart the Status Application 78 Using Message Log 82 When to Use 82 What Happens 83 v To Use Message Log 85 Listing Different Types of Messages 87 Opening an Existing Log File 88 Saving Log as Another File Name 90 v To Save a Log toa Different File 90 Contents v Refreshing Message Log 91 Changing Log Settings 92 Performing a Health Check for RAID Modules 97 When to Use 97 What Happens 97 v To Perform a Health Check 99 Viewing LUN Reconstruction Progress and Changing the Reconstruction Rate 103 When to Use 103 What Happens 103 v To Change the Reconstruction Rate 10
19. Firmware Upgrade or one RAID Module and the Online method you will be downloading NVSRAM files or upgrading controller firmware files to every controller in those modules You cannot select individual controllers in this case m If you select a single RAID Module that has only one controller you must use the Offline method The controller is automatically selected in this case m If you select one RAID Module that has a pair of redundant controllers and the Offline method you need to select the controllers on which you want to upgrade firmware in addition to highlighting the version level you want to download Chapter 6 Using the Maintenance Tuning Application 171 172 Caution Remember that both controllers in a redundant pair must have the same version of controller firmware installed Therefore we strongly recommend selecting both controllers to ensure that they have compatible versions of controller firmware unless you are replacing a failed controller and the replacement controller has an earlier firmware version than the original pair was using Online Offline Upgrade Restrictions During the firmware upgrade process you must select either the Online or Offline upgrade method There are some restrictions to consider when using either method The Online option a Is dimmed if you select a RAID Module that a Does not have two Series 3 controllers and you do not have the RDAC driver installed for redundant controller supp
20. For Failed drives Dead or Degraded LUNs or Dead controllers or Offline controllers that you did not place offline select Recovery Guru and follow the step by step procedure it provides Important Do not rely only on LUN status information to determine if a recovery procedure is necessary For example if you have hot spares configured for a RAID Module and a drive fails the hot spare takes over for the failed drive Therefore you have an Optimal LUN with a failed drive Depending on how many hot spares you have configured for the module you can have multiple failed drives and still have an Optimal LUN or only a degraded LUN Chapter 7 Common Questions and Troubleshooting 191 192 TABLE 7 2 General Troubleshooting All Applications Continued Logical units and controllers are marked Inaccessible You will see the Inaccessible status if the RAID Module has an independent controller configuration Select Module shows Yes in the Indep Cntrls column e For logical units LUNs this status indicates that the logical unit is not available because it is part of a drive group LUN owned by the alternate controller e For a controller this status indicates that it is the alternate controller Neither the controller nor the LUNs marked Inaccessible can be accessed using this software from the current host If you need to perform an operation on this drive group LUN you need to use the software on the host machine connected to t
21. However it may take another couple of minutes to reach 100 if it is downloading to a second controller in the module Do not assume the controller has hung up unless the firmware upgrade has not completed after ten minutes or so Action To avoid this problem wait for the Firmware Upgrade to complete before selecting any other option or exiting Maintenance Tuning If it occurs cycle power to the RAID Module then immediately try to upgrade the firmware again Important If you are not upgrading the firmware again immediately check the firmware version of the module s controllers using Module Profile The controller firmware could be in an unusable state if some files completed the download process before the controller hung In this case your module will not perform properly until the firmware is upgraded RAID Manager 6 1 User s Guide October 1997 TABLE 7 17 Troubleshooting for Upgrading Controller Firmware Continued Firmware File Error message Cause You might see a Firmware File Error message after selecting file s for downloading the firmware This message means that the selected file s is not a firmware file or is corrupted Action Perform one of the following steps Click Cancel to exit Firmware Upgrade without performing any procedure Obtain a new copy of the desired firmware release and begin the firmware upgrade procedure again Click OK to return to the select file s for downloading bo
22. Information for Disk Drives Column Heading Description Location Designation indicating the unique location of the drive in the selected RAID Module This designation includes the SCSI Channel and SCSI ID unique to the drive For example 2 8 indicates the drive is on channel 2 and has a SCSI ID of 8 Capacity MB Amount of storage space on the drive in megabytes Status Operating condition of the drive For an explanation of possible drive statuses and any recommended action to follow see TABLE 5 2 RAID Manager 6 1 User s Guide October 1997 TABLE 2 7 Detailed Information for Disk Drives Column Heading Description Vendor Drive manufacturer s name to identify a drive s location capacity or serial number Product ID Drive manufacturer s product code Firmware Version Number indicating the release of drive firmware Serial Number Drive manufacturer s serial number Date Code Date of manufacture TABLE 2 8 Detailed Information for LUNs Column Heading Description LUN Identifies the number of the LUN Controller Identifies controllers that the LUN owns Capacity MB Shows the amount of storage space in megabytes RAID Level Indicates the way the controller reads and writes both data and parity on the drives Possible RAID Levels are 0 1 3 and 5 Segment Size Indicates the amount of data in blocks t
23. Modules and displays the status for each module Recovery Guru also provides step by step instructions to fix failures when a module s status is other than Optimal When you select Recovery Guru you see a window similar to FIGURE 5 2 TABLE 5 5 describes the window elements RAID Manager 6 1 User s Guide October 1997 Recovery qualab133 File Options Help Module Information RAID Module All RAID Modules Recovery Guru Summary Information RAID Module Failure Fixed qualab133_001 Drive Tray Pwr Supp Failure No Health Check Completed exception found on 1 RAID Module Manual Parity Check Repair Help Checked 1 RAID Module FIGURE 5 2 Main Recovery Guru Window Chapter 5 Using the Recovery Application 119 120 TABLE 5 5 Main Recovery Guru Window Description Window Element Description RAID Module Failure Fixed Fix Identifies the specific module It is possible to see a RAID Module listed more than once when it has multiple failures For example if RAID Module 1 has both a failed drive and a failed fan two entries appear for this module Drive Failure on one line and Module Component Failure on another line Also you see two Drive Failure entries on separate lines when failed drives exist on more than one drive group as shown in FIGURE 5 2 Lists the component failure for the particular module Possible failures appear for
24. The network connection verification utility This program verifies that the network Networked connection between the Networked storage manager software s host and a RAID version only Module s controller s is operational If a failure occurs the symping utility will display possible reasons 14 RAID Manager 6 1 User s Guide October 1997 TABLE 1 2 Files With Information About Command Line Utilities And Programs Background Process Programs and Driver Modules arraymon The array monitor background process The primary function of the array monitor is to watch for the occurrence of exception conditions in the array and provide administrator notification when they happen rdaemon The redundant I O path error resolution daemon The primary function of rdaemon is to receive and react to redundant controller exception events and to participate in the application transparent recovery of those events through error analysis and if necessary controller failover rdriver The redundant I O path routing driver The rdriver module works in cooperation with rdaemon in handling the transparent recovery of I O path failures Its primary responsibilities include routing I Os down the proper path and communicating with the rdaemon about errors and their resolution Customizable Elements rmparams This software s parameter file This ASCII file has a number of parameter settings such as the array monitor poll interval what ti
25. To view more detailed information highlight one or more messages then click Show Details TABLE 4 3 describes the information that is displayed which depends on the type of message selected parity general or hardware To copy detailed message information choose Copy To Clipboard from the Edit menu This automatically highlights the message s text and copies it to a clipboard Caution Before copying additional messages or exiting this program use an appropriate application to save the clipboard contents into an editor or desired file TABLE 4 3 Main Message Log Window Show Details Window Element Description Common Information for All Message Types Message Type Parity General or Hardware Date The month day and year the event details were written to Message Log RAID Module The specific RAID Module affected Time The time the event details were written to Message Log Controller The system device name of the controller assigned to the specified RAID Module Message Index The number of messages you highlighted in the summary information lower right window before clicking Show Details Use to track how many messages portion of the you have to view For example if the index reads 1 of 4 then you are window viewing the first of four messages that you selected in the summary information window Chapter 4 Using the Status Application 85 86 TABLE 4 3 Main Message Log Window Show Detail
26. Use Changing Log Settings on page 92 to do this To Save a Log to a Different File If you are not in Message Log this option is not available Choose Save Log As from the File menu The Open Log window is displayed FIGURE 4 3 RAID Manager 6 1 User s Guide October 1997 2 Enter or select the file name you want to save the log as in the Selection box You can use Filter to direct your selection to a specific directory file name and file extension 3 Click OK The log is saved to the file name that appeared in the Selection box The entire contents of the file are saved regardless of what RAID Module is selected or what type of message is displayed A confirmation box appears if the save was successful Note If you select or enter a file name that already exists clicking OK at that window overwrites the existing data in that file Note If you see the Selection Is Not A File message the file name you entered is not valid Try entering another file name Also be sure that the Selection box contains the file name you want 4 Click OK The Message Log s summary information window is displayed its log display remains unchanged Note If you save the log to a different file name because the default log file is getting too large then you need to delete the contents of the default log file as soon as possible after using this option You can use a standard editor to delete the contents
27. a particular LUN Allows you to select check boxes to indicate whether to enable disable the write cache mirroring option for a particular LUN Allows you to select check boxes to indicate whether to enable disable the cache without batteries option for a particular LUN Caution Selecting Cache Without Batteries enables write caching to continue even without battery backup or if the batteries are discharged completely or not fully charged Normally write caching is temporarily turned off if no batteries are detected or until the batteries are charged However enabling this parameter overrides the controller s safeguard Therefore if you select Cache Without Batteries without an uninterruptible power supply UPS for protection you could lose data if a power failure occurs Saves any changes you make to the caching parameters Returns you to the main Maintenance Tuning window without changing any settings Note You might see an asterisk next to the caching parameters columns This indicates that the parameter is enabled but is currently not active The controller has disabled the parameter for some reason such as low batteries If you see this condition use Message Log Status Application to determine the correct action to take v To View and Set Caching Parameters Caching Parameters is dimmed m If you select a module that has a controller earlier than the Series 3 a If All RAID Modules is selected
28. also have a summary activity indicator light that flashes v To Locate a Module You can locate only one RAID Module at a time If you choose All RAID Modules Locate Module is grayed out and not selectable Note The distinctive pattern of the flashing lights differ depending on the RAID Level of the drive RAID 0 the activity lights on each drive flash sequentially RAID 1 3 5 the activity lights on all drives in a drive group flash simultaneously Ensure that the RAID Module you want is selected For instructions on how to select a RAID Module see page 34 1 Click Locate Module 2 From the new window that is displayed click Start Any drives with a status other than Optimal are skipped that is the activity light does not flash Note If all the logical units in the module are Dead only the summary activity light flashes 3 When the flashing lights have helped you identify the module place a label on it that includes its name for future reference 4 Click Stop 36 RAID Manager 6 1 User s Guide October 1997 Viewing A Module Profile When to Use Module Use this option to find specific details about the controllers drives or LUNs for the ao selected RAID Module This profile can help you identify a Which LUNs are assigned to the controller s in the RAID Module a Manufacturing details about the controller including its type and firmware version m Specifics about th
29. any recovery or maintenance tasks What Happens Saving profile information copies the information found in Module Profile and the main Configuration Application window to a file for your reference It does not however copy configuration information that you could later use to automatically restore your module Once you have the file saved you can then print it using the printer utility available on your system To Save Module Profile Information If All RAID Modules is selected this option is dimmed and not selectable Note You cannot perform these procedures while you are viewing a Module Profile Ensure that the RAID Module you want is selected For instructions on how to select a RAID Module see Selecting a Module on page 33 Choose Save Module Profile from the File menu The window displays a list of information types that you can save The default is All all checkboxes selected RAID Manager 6 1 User s Guide October 1997 Click in the checkboxes to deselect one or more of the following information details All Controller Information Drive Information LUN Information Configuration Information drive group LUN information found in the main Configuration Application window Click OK Either type or select the file name where you want this profile stored You can use Filter to direct your selection to a specific directory file name and file extension Click OK Sav
30. connected to the system logutil The log format utility This program formats the error log file and displays a formatted version to the standard output nvutil The NVSRAM display modification utility This program permits the viewing and changing of RAID controller non volatile RAM settings allowing for some customization of controller behavior It verifies and fixes any NVSRAM settings that are not compatible with the storage management software parityck The parity check repair utility This program checks and if necessary repairs the parity information stored on the array While correct parity is vital to the operation of the array the possibility of damage to parity is extremely unlikely raidutil The RAID configuration utility This program is the command line counterpart to the graphical configuration application It permits RAID logical unit and hot spare creation and deletion to be performed from a command line or script rdacutil The redundant disk array controller management utility This program permits certain redundant controller operations such as LUN load balancing and controller failover and restoration to be performed from a command line or script storutil The host store utility This program performs certain operations on a region of the controller called host store You can use this utility to set an independent controller configuration change RAID Module s names and clear information in the host store region symping
31. e If the LUNs are already created you can balance the LUNs by using LUN Balancing in the Maintenance Tuning Application Note Remember that for a RAID Module with an independent controller configuration each controller owns specific drive groups LUNs The LUN Assignment option in Create LUN is dimmed RAID Manager 6 1 User s Guide October 1997 TABLE 7 1 Frequently Asked Questions Continued Common Questions All Applications What is the difference between capacities Total Remaining and Available Total Capacity Shown in the main Configuration window This value indicates how much capacity in megabytes is available on the drive group The capacity reflects any redundancy or RAID 1 mirroring factors For example a drive group composed of RAID 1 LUNs has half of the capacity of one with RAID 0 LUNs The total capacity for an unassigned drive group shows the entire capacity of the drives and does not reflect any redundancy or mirroring factors Remaining Capacity Shown in the main Configuration window This value indicates the largest contiguous capacity in megabytes still available for configuring LUNs on the drive group The capacity reflects any redundancy or RAID 1 mirroring factors except for an unassigned drive group Available Capacity Shown in the main Create window after you select Create LUN This value indicates the actual capacity that is available for use and changes depending on the RAID Level and
32. has completed Caution If you have deleted all the LUNs on a RAID Module and are re creating new LUNs wait for the format to finish on the first LUN drive group before creating additional new drive groups to make sure the operation completes successfully If you do not wait the status for the first LUN currently formatting in the first drive group changes to Dead until the format is complete While the first LUN eventually shows an Optimal status subsequent LUNs in that drive group could fail to be created However the second drive group LUNs should be created How long does it take to create format a LUN The time it takes to create a LUN depends on the capacity of the LUN you specified the larger the capacity the more time it takes The software creates the LUN in the background so that you can perform other Configuration tasks or use another application such as Status etc The main Configuration window displays Formatting until the operation is complete RAID Manager 6 1 User s Guide October 1997 TABLE 7 1 Frequently Asked Questions Continued Common Questions All Applications Can I change the log file that Message Log displays Message Log displays the log file designated as default set in Options Log Settings each time you start the Status Application You have two options for changing this display Change the default log file Choose Options then Log Settings from the File menu and specify a n
33. have physically replaced the failed drive However when you click OK Recovery Guru verifies whether or not the drive has been replaced If Recovery Guru detects the drive as not replaced it displays a Drive Replacement Condition message that suggests you verify the following The drive has indeed been physically replaced The drive does not have an incorrect capacity that is a capacity smaller than the drive it is replacing Reconstruction has not yet started Click OK A display tells you that reconstruction has automatically started on the new drive and you can click LUN Reconstruction in the Status Application to view the reconstruction progress For more information on what reconstruction involves see Reconstruction on page 23 Click OK You return to the main Recovery Guru window The Fixed column updates to say YES for the first Drive Failure entry and the second Drive Failure entry is highlighted Click Fix The Summary Report for this drive failure shows the drive s location is 2 1 The LUN is also Degraded Note It is possible to have more than one failed drive in a RAID Module and the logical unit s remain in the degraded mode This occurs if the failed drives are not in the same drive group Also it is possible to have more than one drive fail in a RAID 1 logical unit and the logical unit remain Degraded as long as the failed drives are not in the same mirrored pair Continue
34. illustrated 29 tasks 28 component failure module 101 124 component failures how to check for 99 111 184 possible statuses 112 recovering from 26 unexpected 206 component status described 112 unexpected 205 208 viewing 37 configuration change detected 184 resetting 186 with two active controllers 186 Configuration Application capacities 187 changing LUN parameters 66 Create Hot Spare 68 Create LUN 55 Delete 71 drive groups LUNSs displayed 49 51 File menu 48 List Locate Drives 52 options summary 8 overview 46 Reset Configuration 75 see also command line utilities task summary chart 10 configured drive group defined 19 displayed 49 Controller Mode before you begin 160 changing to active active controllers 162 changing to passive active controllers 164 main screen 161 what happens 160 when to use 160 controller status displayed 142 non optimal 205 controllers changing modes 162 164 character limit 195 Dead status 115 determining firmware version 40 number and kind 40 failure on data path 124 fault light on 143 manual recovery 140 mode displayed 39 model number displayed 40 no controller mode 209 Offline status 115 Optimal status 115 placing offline manually 142 placing online manually 143 replacing see Recovery Guru selecting for Firmware Upgrade 171 type displayed 40 upgrading firmware 170 see also Controller Mode see also Firmware Upgrade Copy To Cli
35. information for any application RAID Module Selection box Select a particular RAID Module every application except Configuration also has an All RAID Modules selection Select Module Select or find a specific RAID Module add or remove RAID Modules or edit the information module name independent controller setting or other comments about a RAID Module Locate Module Physically locate and identify a RAID Module Module Profile Obtain specific details about the controllers drives and LUNs for a selected RAID Module page 30 page 33 page 33 page 36 page 37 Configuration List Locate Drives List individual drives in a selected drive group Also physically locate drives in a selected drive group by the flashing activity lights Create LUN Create LUNs from unassigned drives or add LUNs to an existing drive group that has remaining capacity Create Hot Spare Create hot spare drives from unassigned drives to act as standbys in case a drive fails in the RAID Module Delete Delete individual LUNs all LUNs in a drive group or a hot spare drive page 52 page 55 page 68 page 71 8 RAID Manager 6 1 User s Guide October 1997 TABLE 1 1 Application Descriptions Continued Program Application Options Tasks You Can Perform Refer To Status Message Log View the log files containing information about events such as failures general eve
36. larger before you are notified again Click Options from the top menu then Log Settings Save the log file to another file name Click File from the top menu then Save Log As you must then delete the contents of the current log file to reduce its size RAID Manager 6 1 User s Guide October 1997 TABLE 7 2 General Troubleshooting All Applications Continued An asterisk appears next to the Caching Parameters Cause You might see an asterisk next to the caching parameters column in either of these screens because the controller has disabled the parameter for some reason such as low batteries This means that the parameter is enabled but currently is not active Action If you see this condition use Message Log Status Application to determine the correct action to take Chapter 7 Common Questions and Troubleshooting 193 194 Online Help TABLE 7 3 TroubleShooting for Online Help All Applications Cannot access Online Help Cause You cannot open Help with the current option selected Action Exit the option you are in click Help and position the topic you want to refer to in the window Then select that option again For more specific information see Using Online Help on page 30 or consult Online Help Limitations Of The Online Help Top menu File Print Topic option failed Cause An Error Window appears Most likely you do not have a default printer defined or did not provi
37. may have occurred Action To Take The steps you should take to correct the event problem that occurred RAID Manager 6 1 User s Guide October 1997 Listing Different Types of Messages When to Use Use this option to change the type of messages displayed in Message Log You can include one or all message types parity general and hardware Additionally when you select All or Hardware you can specify a particular range of ASC ASCQ codes v To List Different Types of Messages 1 Ensure that the RAID Module you want is selected For instructions on how to select a RAID Module see Selecting a Module on page 33 2 Click Message Log The Main Message Log window is displayed FIGURE 4 2 Note If you are first starting the Status Application Message Log is already displayed for All RAID Modules 3 Click List Type A window displays the different message types 4 Click each box for the type s you want to view a All to view all of the message types a Parity to view only messages associated with parity check repair events General to view only general status change messages format complete and so on a Hardware to view only component information and failure messages You can select more than one message type Selecting All automatically selects every type You must select either All or Hardware before you can specify an ASC ASCQ range TABLE 4 3 describes the information that is dis
38. may want to view this information as a reference if you need to perform any maintenance or troubleshooting procedures TABLE 2 6 through TABLE 2 8 describe what information appears in the window when you click Detailed Information for any of the these components Click OK The Module Profile summary information window is displayed Click OK Chapter 2 Features Common to All Applications 39 40 Note After exiting Module Profile you can save the profile to a specific file See Saving Module Profile Information TABLE 2 6 Detailed Information for Controllers Column Heading Description Board Name Controller type designation Board ID Controller model number Board Serial Unique identification for the controller assigned by the Number manufacturer Product ID Controller manufacturer s product code Product Serial Usually the same as Board Serial Number Number Vendor ID Controller manufacturer s name Date of Date controller was assembled Manufacture SCSI ID Address assigned to the controller for its connection to the bus not applicable for Networked versions Boot Level Number indicating the release version of controller bootware Firmware Level Number indicating the release of controller firmware Cache Processor Size MB Amount in megabytes of total available cache and processor memory on the controller TABLE 2 7 Detailed
39. of the following a Deleted all of the LUNs in a drive group a Deleted the only LUN in the drive group a Deleted a hot spare drive m There will be additional remaining capacity on the drive group if you deleted some but not all of the LUNs in a drive group To Delete Drive Groups LUNs or Hot Spare Drives Delete is dimmed for one of the following reasons m You selected an unassigned drive group You cannot delete an unassigned drive group m You selected a hot spare drive group and all of the hot spares are currently being used You cannot delete a hot spare drive that is being used because doing so would delete the data contained on it and would cause the logical unit to have a Degraded or Dead status RAID Manager 6 1 User s Guide October 1997 m You selected a configured drive group that is not owned by the controller host machine you are working from this can occur if the module has an independent controller configuration Ensure that the RAID Module you want is selected For instructions on how to select a RAID Module see Selecting a Module on page 33 Caution Before deleting any LUNs see the RAID Manager Installation and Support Guide and Chapter 7 to see if there are restrictions or troubleshooting information for special requirements such as deleting partitions or unmounting file systems Caution Deleting all LUNs in a drive group causes the loss of all data on each LUN in that drive g
40. only want to change certain LUN parameters see Changing LUN Parameters on page 66 Number of Drives field in the main Create LUN window shows less than the number of drives in the unassigned drive group There are two main reasons this number could be different than expected e This list shows only the maximum number allowed which is a maximum of 30 drives in a drive group e There could be failed drives in the unassigned drive group Failed drives are not available for configuration therefore they are not displayed in this list RAID Manager 6 1 User s Guide October 1997 TABLE 7 6 Configuration Troubleshooting Continued Remaining capacity in the main Configuration window is less than expected Cause Remaining capacity reflects the largest contiguous storage space available for creating LUNs on a drive group Because of this it is possible for this amount not to include the capacity of LUNs deleted from the drive group if the deleted LUNs were non contiguous or not the largest contiguous amount For example assume that drive group one has LUNs 0 1 and 2 configured at 1000 Mbyte capacity each and that this drive group shows 1500 Mbyte remaining capacity in the Drive Groups area of the main Configuration window If you delete LUN 1 the remaining capacity still shows only 1500 Mbyte until you configure that space into additional LUN s on the drive group Once you use the 1500 Mbyte the drive group will sh
41. produit ou document ne peut tre reproduite sous aucune forme par quelque moyen que ce soit sans autorisation pr alable et crite de Sun et de ses bailleurs de licence s il y ena Le logiciel d tenu par des tiers et qui comprend la technologie relative aux polices de caract res est prot g par un copyright et licenci par des fournisseurs de Sun Des parties de ce produit pourront tre d riv es des syst mes Berkeley BSD licenci s par l Universit de Californie UNIX est une marque d pos e aux Etats Unis et dans d autres pays et licenci e exclusivement par X Open Company Ltd Sun Sun Microsystems le logo Sun AnswerBook SunDocs et Solaris sont des marques de fabrique ou des marques d pos es ou marques de service de Sun Microsystems Inc aux Etats Unis et dans d autres pays Toutes les marques SPARC sont utilis es sous licence et sont des marques de fabrique ou des marques d pos es de SPARC International Inc aux Etats Unis et dans d autres pays Les produits portant les marques SPARC sont bas s sur une architecture d velopp e par Sun Microsystems Inc L interface d utilisation graphique OPEN LOOK et Sun a t d velopp e par Sun Microsystems Inc pour ses utilisateurs et licenci s Sun reconnait les efforts de pionniers de Xerox pour la recherche et le d veloppement du concept des interfaces d utilisation visuelle ou graphique pour l industrie de l informatique Sun d tient une licence non exclusive de Xer
42. run at the specified start time a Unselect the Enable Automatic Parity Check Repair box if you do not want this operation to run Note It is strongly recommend enabling this option in Step 2 so that parity on your LUNs can be checked and repaired as soon as possible However see the RAID Manager Installation and Support Guide to check for any restrictions that may apply Chapter 6 Using the Maintenance Tuning Application 181 Check Repair to run so that the system performance is not adversely affected while Caution Select a time of slow system use in Step 3 for the Automatic Parity parity is checked and repaired 3 Type in or use the spinner buttons to enter the start time you want auto parity to begin each day Note The time must be in a 24 hour format therefore the time you can set ranges from 00 00 midnight to 23 59 11 59 PM For example the default setting two o clock in the morning is set as 02 00 If you want the check repair to run at three o clock in the afternoon set the boxes to read 15 00 4 Click Save to keep the changes you have made 182 RAID Manager 6 1 User s Guide October 1997 CHAPTER 7 Common Questions and Troubleshooting This chapter contains answers to common questions about using and troubleshooting the RAID Manager software Note If you cannot find the question you are looking for consult the RAID Manager Installation and Support Guide Tha
43. s Guide October 1997 The fwcompat def file enables this software to compare the firmware files for compatibility during the upgrade process providing you with a list of compatible files to select for downloading Also this software searches the default installation directory for these firmware files Caution If you do not copy the fwcompat def file to the host system the software is unable to check the files for compatibility Although you can still enter firmware file names the software is unable to check the firmware files for compatibility or to provide you with a list of compatible files to select for downloading Identifying Controller Firmware Version Use the following procedure to identify your current firmware version From the RAID Manager program group select Maintenance Tuning Click RAID Module Module Profile Controllers Verify Bootware and Firmware levels are at least version 2 4 4 or later Click OK when finished viewing Note The NVSRAM file specifies certain default settings for the controller NVSRAM is pre configured for the controller at the factory There is typically no reason to change NVSRAM settings therefore the NVSRAM file is not included with the firmware upgrade Selecting Controllers Whether or not you can select specific controllers for downloading NVSRAM or upgrading controller firmware depends on the RAID Module you select a When you select All RAID Modules gt
44. same path by using a between the files Path Zusr 1 ib osa fw 92040405 apd FIGURE 6 8 Firmware Upgrade Window compatible groups If the Note If the Compatible Files Version s area is blank after you select file s for downloading firmware then the current directory does not contain all the necessary firmware files Remember that the software searches the default subdirectory in the installation directory for the firmware files and the fwcompat def file Although you can still enter firmware file names without the fwcompat def file the software is unable to check the firmware files for compatibility or to provide you with a list of compatible files to select for downloading Click Cancel and read Installing Controller Firmware Files RAID Manager 6 1 User s Guide October 1997 TABLE 6 8 Firmware Upgrade Window Elements Window Element Description Current Firmware Version RAID Module Identifies the specific RAID Module Controller Identifies the controller s in the selected RAID Module by an A or B designation and where applicable includes a system device name The A and B are relative names to simplify identification of the controllers Important If you selected only one RAID Module with redundant controllers and the Offline method this area is selectable and you must highlight each controller that you want to upgrade Firmware Level Indicates the release of controller f
45. shows the amount of parity check repair accomplished as a percentage and starts over from 0 as each new LUN begins parity check The response time for updating this histogram depends on the number and size of the LUNs undergoing parity check repair Begins the parity operation for selected LUNs with Optimal statuses See the procedure below Note You can enable disable or change the automatic parity settings using Options Auto Parity Settings from the top menu in the Maintenance Tuning Application It is recommend that you enable this automatic option so that parity is checked daily However see the RAID Manager Installation and Support Guide for any restrictions that may apply v To Manually Check and Repair Parity Make certain that the RAID Module you want is selected If you need instructions for selecting a RAID Module see page 33 before proceeding 1 Click Manual Parity Check Repair The Recovery Window is displayed FIGURE 5 3 2 Highlight one or more LUNs in the list with a status of Optimal Chapter 5 Using the Recovery Application 127 128 3 Click Start Parity Check Repair This option is dimmed if you select one or more LUNs that either are RAID Level 0 or have a LUN status other than Optimal View the progress of the parity check repair operation A new histogram is displayed for each selected LUN when its check begins When parity check repair is complete one of two confirmation boxes is displ
46. the LUNs configured for the selected RAID Module Also you have options to manually format or revive LUNs See FIGURE 5 5 for a window similar to the one you see when you click Options from the top menu then Manual Recovery Logical Units TABLE 5 9 describes the window elements Chapter 5 Using the Recovery Application 135 Recovery qualab133 File Options Help Module Information RAID Module L Module Manual Recovery Logical Units Logical Units Drive Group RAID Level Logical Unit Status Optimal Optimal Optimal Manual Parity Optimal Check Repair Optimal Optimal Help FIGURE 5 5 Main Manual Recovery Logical Units Window 136 RAID Manager 6 1 User s Guide October 1997 TABLE 5 9 Main Manual Recovery Logical Units Window Description Window Element Description Logical Units Identifies the LUNs contained on a particular drive group In the case of a Dead LUN you see all the LUNs for the affected drive group on the same line Drive Group Identifies the drive groups configured for the selected RAID Module RAID Level Indicates the RAID Level of the LUNs Possible RAID Levels are 0 1 3 and 5 Logical Unit Shows the operating condition of the affected LUN Status For an explanation of possible LUN statuses and any recommended action to take see TABLE 5 3 Format Enables you to manually format a LUN See the procedure on page 137 Revive Enables you to
47. the RAID Module you want is selected If you need instructions for selecting a RAID Module see page 33 before proceeding Click Options gt Manual Recovery gt Controller Pairs The Recovery Window is displayed FIGURE 5 6 Highlight the controller you want to place offline The Place Offline option is dimmed if one controller on the selected RAID Module is already offline You can place only one controller for a module offline at a time Click Place Offline then OK Caution If you are using this option to replace the controller wait one minute before inserting a new controller Click OK when the controller list updates the status to Offline You can also visually see the controller is offline by checking the LED and fault lights on the controller See your hardware manual for the location and function of these LEDs Placing a Controller Online When to Use Use this option to place a controller online that is to return it to ready for operating condition For example if you have placed a controller offline to replace it you need to place it online before it can function again for the selected RAID Module Caution Do not use Manual Recovery unless specifically directed by Recovery Guru or a Customer Services Representative Doing so could result in the loss of data Chapter5 Using the Recovery Application 143 v To Place a Controller Online This option is dimmed if you select All RAID Modu
48. the following tasks m Change the reconstruction rate for LUNs on a selected RAID Module m Balance LUN assignments between active active controller pairs of one or all RAID Modules Change an active passive controller pair to active active Swap an active passive controller pair to passive active View or change caching parameters for LUNs on a selected RAID Module Upgrade the controller firmware for one or all RAID Modules Before you begin the procedures in this chapter you should be familiar with the information in Chapter 2 Features Common to All Applications These common concepts navigational functions and procedures are the same in Maintenance Tuning as they are in the other applications A task summary chart of the Maintenance Tuning Application is shown in FIGURE 1 6 Step by step procedures for each task in Maintenance Tuning begin in Changing the LUN Reconstruction Rate in this chapter Starting Maintenance Tuning To start the Maintenance Tuning Application double click the Maintenance Tuning icon in the program group FIGURE 6 1 shows the main Maintenance Tuning window that is displayed TABLE 6 1 describes the elements of that window RAID Manager 6 1 User s Guide October 1997 Maintenance and Tuning qualab133 File Options Help Module Information RAID Module LUN Reconstruction Rate Please select either oy 1 One of the push buttons tn 2 One of the options fro
49. the window elements Note If you want to change whether the Select Module main window appears every time you first start an application edit the rmparams file to change the System_DefaultModuleSelect parameter TRUE means the window will appear each time and FALSE means that it will not appear automatically Chapter 2 Features Common to All Applications 33 RAID Module Selection Module Controller Indep Gommer i 2 All RAID Modules This is the All RAID qualab133_001 cit5d0s0 cOt4d3s0 FIGURE 2 6 Select Module Main Window What Happens The following are common to all applications except where noted m Any options or tasks you perform will apply to the RAID Module you select a Appropriate information for the selected RAID Module is provided in the various options such as Module Profile m Inthe Configuration Application configuration information for the selected RAID Module is displayed a Inall applications except Configuration a window is displayed instructing you to select an option v To Select a RAID Module You perform all tasks for example performing a Health Check or creating logical units on a RAID Module Select a RAID Module before selecting the option you wish to perform You can easily select specific RAID Modules for performing storage management operations in either of two ways a Use the Drop Down List at the far left of the Module Information area in each application s main sc
50. to select that item Press Shift click to highlight a series of items Press Control click to highlight items not in a series Maintenance and Tuning qualab133 File Options Help Module Information RAID Module All RAID Modules Logical Unit LUN Balancing RAID Module Controller s Logical Units Owned qualab133_001 Controller A 0 1 2 Controller B 3 4 5 6 LUN Balancing uia Contwolier Firmware Balance Help Upgrade FIGURE 6 4 Balancing LUNs On All RAID Modules Window Chapter 6 Using the Maintenance Tuning Application 157 158 TABLE 6 4 Balancing LUNs On All RAID Modules Window Description Name Description RAID Module Identifies specific modules Controllers Displays two columns one for each controller in the RAID Modules Logical Units These columns list the LUNs owned by that controller for each module Owned in the list The controllers are identified by an A or B designation and where applicable a system device name The A and B are relative names to identify the controllers You see either a number for every logical unit configured for the selected RAID Module or a reason why no LUNs are owned Note When no logical units LUNs are assigned to one of the controllers instead of seeing a LUN you see one of the following reasons why no LUNs are assigned to that controller e None No controller usually means the module has only one co
51. you cannot highlight any module unless NO appears in the Fixed column a Double click on the item Note See TABLE 5 6 for a list of possible failure types that Recovery Guru might display in the Failure column Follow the step by step instructions shown in the window very carefully When you complete the recovery procedure notice that the Fixed column in the main window shows YES Note Click Cancel when offered if you want to stop the recovery procedure However you are not correcting the failure Caution Do not click OK at any time unless you have completed all the steps as instructed Be sure to replace any failed component when instructed Once a Failure type is marked as fixed YES you cannot re select it until the next time you click Recovery Guru and it reports a failure on the module again Note When you see more than one failure listed click the first item in the list In such cases Recovery Guru lists failures in the order top to bottom that you should fix them For example it is best to fix a Drive Path failure before any drive failures Select any of the following a For each additional failure repeat these steps starting at Step 2 a Click Manual Parity Check Repair to check parity when recommended a Exit Recovery and click the Status Application to view reconstruction progress when recommended Chapter 5 Using the Recovery Application 121 122 Possible Failures Detec
52. you have RDAC may need to be protection replaced Use Recovery Guru and follow the step by step instructions provided Dead There is a problem on the data path Use Recovery Guru to interface cable terminator network card diagnose and correct controller or the host adapter the problem Note You could also see Inaccessible with these statuses if the RAID Module has an independent controller configuration Example Recovering From Drive Failures The following scenario provides an example of how to recover from two drive failures by using Recovery Guru Scenario You notice that two drives on RAID Module 1 have fault lights lit Furthermore the drives are side by side in the module at locations 1 1 and 2 1 Your concern is that the LUNs drive group is Dead because there are two failed drives Instead of immediately replacing the drives you select Recovery Guru and follow the step by step instructions provided Chapter 5 Using the Recovery Application 115 116 To Fix the Drive Failures With Recovery Guru Start the Recovery Application RAID Module 1 is already selected Click Recovery Guru Checking displays until its diagnosis of the module s condition is complete You see two separate Drive Failure entries instead of one Multiple Drive Failure in the Failure column Also the first Drive Failure entry is highlighted and NO is displayed in the Fixed column Click Fix The Summar
53. you to balance LUN ownership between page 153 active active controller pairs for a single or all RAID Modules Controller Enables you to do one of the following on selected page 160 Mode modules with active passive controller pairs Change active passive controller pairs to active active Swap the active controller to passive and the passive controller to active RAID Manager 6 1 User s Guide October 1997 TABLE 6 1 Main Maintenance Tuning Window Elements Continued Window Element Description Procedure Caching Allows you to display the settings for three caching Parameters parameters which you can enable or disable for LUNs on a selected module Write caching page 166 Write cache mirroring Cache without batteries Firmware Enables you to upgrade controller firmware and or page 170 Upgrade NVSRAM files on a single or all RAID Modules using Status Line either the online or offline procedures Provides information about an option when you move the mouse over the option button For top menu options you must click on the option and hold down the left mouse button Note Some options on the main Maintenance Tuning window may be dimmed if You select All RAID Modules OR The RAID Module you select does not meet the requirements for performing that option Chapter 6 Using the Maintenance Tuning Application 149 150 Changing the LUN Reconstruction Rate LUN Reconstruction Rat
54. 0 if you see any Failed download statuses Click OK The main Maintenance Tuning window is displayed Depending on whether you are downloading NVSRAM files or upgrading controller firmware do one of the following If you have successfully downloaded NVSRAM files continue with Step 13 a If you have successfully upgraded controller firmware you are finished with this procedure At the command line type nvutil vf This utility checks and corrects any settings on all controllers in your RAID Modules to ensure that certain settings in the NVSRAM are set up correctly for RAID Manager Confirming the Firmware Upgrade At the final confirmation window of the NVSRAM or firmware download procedure you will see if the upgrade was Successful or Failed for each of the selected RAID Modules m If you see that the upgrade was Successful you should still verify that all the logical units LUNs are not assigned to only one controller Chapter 6 Using the Maintenance Tuning Application 177 178 m If you see Failed for any module you should fix the specified failure and try the firmware upgrade procedure again See TABLE 6 10 for possible actions to take to correct a failed upgrade TABLE 6 10 Corrective Actions for Fail Firmware Upgrades Reasons For Failed Status Actions The selected module had I O activity occurring or file systems mounted Offline download At least one of the selected firmware files had bad fil
55. 3_001 Hardware cit5Sd0so 07 29 1997 3293 qualab133_001 Hardware cOt4d6s0 07 29 1997 329 qualab133_001 Hardware cOt4d5s0 07 29 1997 3293 qualab133_001 Hardware cOt4d4s0 07 29 1997 25 qualab133_001 Hardware c t4d3s0 07 29 1997 qualab133_001 Hardware c1t5d0s0 Show Details or Select All List Type Help Current Log rmlog log Total Messages in Log 35 Total Selected 1of 35 Message Log FIGURE 4 2 Main Message Log Window Chapter 4 Using the Status Application 83 84 TABLE 4 2 Main Message Log Window Window Element Description Date amp Time RAID Module Type Code Controller Show Details Select All List Type Message Line Indicates when the detected event was logged into Message Log If the event is a component failure detected by the background monitor it indicates that the error actually occurred since the last checking interval as set in Log Settings The default setting for this checking interval is five minutes If the message reflects a parity event it indicates that detection and repair occurred the last time that parity was run either manually or through Automatic Parity Check Repair If the message indicates a general status change you have a history of when changes were made Identifies the specific module where the event occurred Indicates what type of RAID Module event occurred Parity General or Hardware Displays an ASC ASCQ code for h
56. 5 5 Using the Recovery Application 107 Overview 108 v To Start the Recovery Application 108 Recovering From Failures on a RAID Module 111 Benefits of Recovery Guru 112 Possible Component Statuses 112 Example Recovering From Drive Failures 115 Checking for Component Failures Using Recovery Guru 118 When to Use 118 What Happens 118 v To Check for Component Failures 121 Possible Failures Detected 122 Manually Checking and Repairing Parity 125 When to Use 125 What Happens 125 What Parity Check Repair Does 125 vi RAID Manager 6 1 User s Guide October 1997 v To Manually Check and Repair Parity 127 Performing Manual Recovery for Drives 129 When to Use 129 What Happens 129 Failing a Drive 132 Reconstructing a Drive 133 Reviving a Drive 134 Performing Manual Recovery for LUNs 135 When to Use 135 What Happens 135 Formatting a LUN 137 Reviving aLUN 138 Performing Manual Recovery for Controller Pairs 140 When to Use 140 What Happens 140 Placing a Controller Offline 142 Placing a Controller Online 143 Using the Maintenance Tuning Application 145 Overview 146 Starting Maintenance Tuning 146 Changing the LUN Reconstruction Rate 150 When to Use 150 What Happens 150 v To Change the LUN Reconstruction Rate 152 Balancing LUNs Between Active Active Controllers 153 When to Use 153 What Happens 153 Contents vii Balancing LUNs on One RAID Module 154 Balancing LUNs on All RAID Modules 156 Changing Controller Mode 160 When to Us
57. 5 Using the Recovery Application for a description before attempting any recovery procedures Action Click Module Profile gt Drives to determine which drive is Unresponsive If there are no I Os and you want to manually fail it use the Recovery Application Health Check doesn t report a drive failure when I remove a drive If there is no I O occurring for that drive Health Check reports an unresponsive drive If there is I O occurring the controller will fail the drive also reported by Health Check Caution You should never remove drives from a module unless the controller has marked them as failed Doing so could result in data loss for the affected LUN drive group If you suspect problems with a drive select Recovery Guru and follow the instructions provided RAID Manager 6 1 User s Guide October 1997 LUN Reconstruction TABLE 7 9 Troubleshooting for LUN Reconstruction Reconstruction takes a long time Cause The amount of time that reconstruction takes depends on the number and size of the LUNs that may be reconstructing and on the rate setting for the reconstruction operation Action Consider changing the reconstruction rate to better optimize reconstruction Use LUN Reconstruction to change the rate setting while reconstruction is occurring Cannot change the reconstruction rate for all LUNs You can only change the reconstruction rate for LUNs that are currently reconstructing with this opt
58. 6 1 User s Guide October 1997 m The drive location corresponds to a specific drive in the RAID Module and indicates the channel number and SCSI ID for that drive where the channel number is always listed first For example 2 1 corresponds to the drive at location SCSI Channel 2 and SCSI ID 1 Use the location information to match a unique drive to help locate that drive in the RAID Module a Ifa drive shows a status of Failed or Unresponsive go to the Recovery Application and select Recovery Guru a If you select the hot spare drive group the list shows the hot spare drives and a status of In Use or Standby a In Use the hot spare is currently being used as a replacement for a failed drive The location of the drive being covered by this hot spare is indicated in brackets For example 4 1 a Standby the hot spare is ready if a drive fails m If you select a RAID 1 drive group the mirrored pair drives are indicated by a number appearing in front of the drive location information To List or Locate a Drive Group Ensure that the RAID Module you want is selected For instructions on how to select a RAID Module see Selecting a Module on page 33 Highlight the drive group containing the drives you want to list or locate Click List Locate Drives A list of corresponding drives is displayed Chapter 3 Using the Configuration Application 53 List Locate Drives Drive List for Drive Group 3 Dri
59. 997 qualab133_001 07 29 1997 qualabi33_001 07 29 1997 qualab133_001 07 29 1997 qualab133_001 07 29 1997 qualab133_001 07 29 1997 qualab133_001 07 29 1997 qualab133_001 Status line Current Log rmlog log File Menu A top menu item with options that vary depending on the Module Profile Type Code Hardware 3FC7 Hardware Hardware Hardware Hardware Hardware Hardware Hardware Hardware Hardware Hardware Hardware Total Messages in Log 35 __ Total Selected Controller c1t5d0s0 c1t5d0s0 cOt4d3s0 cOt4d3s0 c1t5d0s0 c0t4d3s0 c1t5d0s0 cOt4d6s0 cO0t4d5s0 cO0t4d4s0 cO0t4d3s0 c1t5d0s0 Help iof 36 FIGURE 2 4 Window Elements Common to All Applications Chapter 2 Features Common to All Applications 30 Exiting an Application To exit any application Choose File gt Exit The application icon window is displayed Using Online Help A powerful hypertext online Help system is available with this software This help has information about features common to all the applications as well as topics that are specific to each application Configuration Status Recovery and Maintenance Tuning You can access all of the help topics from any application However in situations where a new screen is overlayed on top of the main application screen you cannot access help from within that s
60. D Manager 6 1 User s Guide October 1997 Performing a Health Check for RAID Modules Health Check When to Use Use this option to immediately check selected RAID Module s for failures on the I O data path drives LUNs and other components Note A background check occurs at regular intervals for all RAID Modules the default setting is five minutes You can change the frequency of this check by using Changing Log Settings on page 92 What Happens The software performs an immediate check of the selected RAID Module s and displays a summary of the results FIGURE 4 5 shows the Health Check Status window TABLE 4 7 describes the window elements Note It is possible to detect and correct problems using Health Check before the background monitor detects them especially if you change the checking interval to a time larger than the default setting 5 minutes In cases where you have corrected problems before the background monitor detects them these events are not written to Message Log Chapter 4 Using the Status Application 97 Status qualab133 File Edit Options Help Module Information serene RAID Module All RAID Modules Module Health Check Summary Information g RAID Module Results qualab133_001 Drive Tray Pwr S u pp Failure Message Log Vy Health Check Completed exception found on 1 RAID Module F Show Details l Select All Help C
61. Default Log Log Settings Log Size Threshold Checking Frequency Controllers Drives LUNs All Show Details m Parit Select All y List Type erae Show Details Select All L Hardware ASC ASCQ Code Chapter 1 Program Application Overview 11 12 Recovery Application ae CJ Save Module Profile m Fail m Reconstruct Revive m Format Revive Place Offline Place Online File Exit m Drives L Options Manual Recovery m Help __ Logical RAID Module Units Selection Box Select Module __ Controller Locate Module Pairs m Controllers Module _ Drives Profile c LUNs Recovery Fix Guru Manual Parity Start Parity Check Repair Check Repair FIGURE 1 5 Recovery Task Summary Chart RAID Manager 6 1 User s Guide October 1997 Maintenance Tuning Application Save Module Profile File Exit Options Auto Parity Settings Help RAID Module Selection Box m Select Module Locate Module m Controllers Module ___ Drives Profile L LUNs LUN Reconstruction Rate LUN Save single RAID Module Balancing L Balance all RAID Modules Controller m Change to Active Active Mode Swap Active Passive Caching Save Parameters Firmware j Online Upgrade L Offline FIGURE 1 6 Maintenance Tuning Ta
62. Existing Log page 88 File To save a selected log to another file File gt Save Log As Saving Log as Another File page 90 Name To update the display Options gt Refresh All Refreshing Message Log page 91 To change three log parameters Options gt Log Settings Changing Log Settings page 92 e default log file e log size threshold e checking interval 82 RAID Manager 6 1 User s Guide October 1997 What Happens Message Log formats the log file data to display information about historical events for the selected RAID Module s Event information is recorded in the default log file in different ways a The background monitor checked the RAID Modules and found failures m Parity check repair has been performed and parity inconsistencies were found and repaired General status changes occurred such as I O errors configuration formats and component failures FIGURE 4 2 shows the message log window that is displayed TABLE 4 2 describes the window elements Status qualab133 File Edit Options Help Module Information RAID g Date Module Type Code Controller 08 01 1997 56 53 qualab133_00 Hardware 3FC c1it5d0s0 08 01 1997 796 qualab133_001 Hardware cit5Sd0so 08 01 1997 796 qualab133_001 Hardware cOt4d3s0 Fy 08 01 1997 796 qualab133_001 Hardware cOt4d3s0 07 31 1997 796 qualab133_001 Hardware c1t5d0s0 07 31 1997 796 qualab133_001 Hardware cOt4d3s0 07 29 1997 329 qualab13
63. For anew LUN select RAID Level number of drives and number of LUNs TABLE 3 2 describes what happens when you select these parameters a To add a LUN to an existing drive group select the number of additional LUNs you want to add to the existing drive group See Number of LUNs in TABLE 3 2 5 Complete the configuration process by doing one of the following a To create LUNs without changing additional LUN parameters go to Step 8 a To set additional LUNs parameters for example segment size capacity or selecting specific drives and so on continue with Step 6 Caution If you make any changes on the main Create window after you have made changes in the Options window Step 6 and Step 7 all changes in the Options window are undone For example if you changed the segment size of a LUN from 16 to 32 but then changed the number of LUNs in the main Create window the segment size would return to 16 Click Options to view or change any LUN configuration options LUN capacity drive selection caching parameters segment size or LUN assignment The Create LUN Options window is displayed FIGURE 3 4 TABLE 3 3 describes the window elements Make your changes to the options and click OK when done You can switch between options without losing your changes Note Available Capacity shown in the main Create LUN window changes depending on the RAID Level and number of drives you select and reflects the a
64. LUN Reconstruction Rate 209 Maintenance Tuning Application 209 Manual Parity Check Repair 207 Manual Recovery 207 Message Log 199 Module Profile 195 online help 194 overview 190 Recovery Application 203 Recovery Guru 206 Save Module Profile 184 Status Application 199 U unassigned drives defined 19 drive group displayed 49 failed 196 unresponsive drive message 202 206 Index 225 unresponsive drives 101 113 122 198 202 206 updating Message Log 91 upgrading controller firmware 170 before you begin 170 determining success of procedure 177 download status 177 file error message 211 following progress 176 how long it takes 210 no files version displayed 174 restrictions 211 selecting one controller 171 troubleshooting 210 V vendor ID controllers 40 drives 41 viewing caching parameters 166 component statuses 37 list of drives 52 manual parity progress 127 Message Log 82 module s profile 37 reconstruction progress 103 WwW write cache mirroring parameter defined 166 described 168 write caching parameter defined 166 described 168 wrong drive capacity 117 226 RAID Manager 6 1 User s Guide October 1997
65. Most likely the current directory does not contain all the necessary firmware files Copy the firmware files and the fwcompat def file to the default subdirectory in the installation directory and try again Be sure the version you select has both Firmware Level and Bootware Level versions specified If the upgrade fails a second time obtain a new copy of the firmware upgrade files RAID Manager 6 1 User s Guide October 1997 TABLE 6 10 Corrective Actions for Fail Firmware Upgrades Continued Reasons For Failed Status Actions The software was unable to access the controller s during the upgrade process You tried to load a pre 2 04 firmware version which is not supported by this software or the redundant controller configuration The selected firmware file s are not compatible with your controller model The online upgrade cannot be performed because either the selected module has only one controller or one of the controllers in the pair is not accessible An unknown failure occurred NVSRAM downloads could fail if you selected All RAID Modules and had copied the NVSRAM files to the same directory as the firmware files This causes the fwcompat def file to check for compatibility on the NVSRAM files however it does not recognize NVSRAM files and returns a no compatible files found message Use Recovery Guru in the Recovery Application to determine if the module has a failure See Checking f
66. O Click Save for your rate changes to take effect RAID Manager 6 1 User s Guide October 1997 Balancing LUNs Between Active Active Controllers LUN Balancing When to Use Use this option to balance LUN ownership on a drive group basis between active active controller pairs in selected RAID Modules To quickly view the drive group LUN assignments for all your RAID Modules select All RAID Modules then LUN Balancing This display includes all modules regardless of the number of controllers or their modes Caution If you do not have RDAC protection you must stop I Os to the RAID Module before changing LUN ownership Otherwise you could hang the system What Happens The software displays the LUNs configured for a particular drive group and shows which controller owns them The procedure you use depends on whether you select a single RAID Module or All RAID Modules m If you select a single RAID Module you control which drive group LUNs are assigned to each controller Use the procedures that follow for Balancing LUNs on One RAID Module a If you select All RAID Modules the software automatically balances drive groups LUNs for the modules you select Use the procedures on page 156 Chapter 6 Using the Maintenance Tuning Application 153 Balancing LUNs on One RAID Module When to Use Use this option to manually assign specific drive groups LUNSs to each active controller in the pair on a s
67. OK A window displays for you to select the online or offline procedure Select either a Online to upgrade firmware while the selected RAID Module s receives I O a Offline to upgrade firmware when the selected RAID Module s is not receiving I O After selecting Online or Offline the window displays Verifying the controller state while the software checks the selected RAID Modules for restrictions based on the type of firmware upgrade you selected If there are no restrictions the Offline Firmware Upgrade window is displayed FIGURE 6 8 TABLE 6 8 describes the window elements Highlight the version level you want to download The path box updates to show the file names associated with the version you selected Note It is recommend that the version line you select has both Firmware Level and Bootware Level versions specified Chapter 6 Using the Maintenance Tuning Application 173 174 Offline Firmware Upgrade 1 Select Controller s to Upgrade both recommended RAID Module Controller Firmware Level Boot Level Fibre Channel Level qualab133_001 A c1tSe 04 04 05 92 04 04 01 qualab133_001 B cOt4d 04 04 05 92 04 04 01 Instruction 2 Select Compatible FilesVersions Highlight files to download Firmware Level Boot Level Fibre Channel Level These files are listed in files are not displayed or you want to download an NVSRAM file then enter a path and or file s in the multiple files in the
68. RAID Manager 6 1 User s Guide Qe Sun microsystems THE NETWORK IS THE COMPUTER Sun Microsystems Computer Company A Sun Microsystems Inc Business 901 San Antonio Road Palo Alto CA 94303 USA 415 960 1300 fax 415 969 9131 Part No 805 2781 10 Revision A October 1997 Copyright 1997 Sun Microsystems Inc 901 San Antonio Road Palo Alto CA 94303 USA All rights reserved Portions copyright 1997 Symbios Logic Inc All rights reserved This product or document is protected by copyright and distributed under licenses restricting its use copying distribution and decompilation No part of this product or document may be reproduced in any form by any means without prior written authorization of Sun and its licensors if any Third party software including font technology is copyrighted and licensed from Sun suppliers Parts of the product may be derived from Berkeley BSD systems licensed from the University of California UNIX is a registered trademark in the U S and other countries exclusively licensed through X Open Company Ltd Sun Sun Microsystems the Sun logo AnswerBook SunDocs and Solaris are trademarks registered trademarks or service marks of Sun Microsystems Inc in the U S and other countries All SPARC trademarks are used under license and are trademarks or registered trademarks of SPARC International Inc in the U S and other countries Products bearing SPARC trademarks are based upon an architec
69. RAID Module no longer exists or is no longer connected to the host system the software cannot detect it This message might display Instead of the default log file if you selected one RAID Module or In the message line for a specific RAID Module if you selected All RAID Modules Action Check to be sure that the selected module is connected If the RAID Module is one that no longer exists try selecting another module Note If the module has been removed from a subsystem the software does not automatically remove it from the configuration You can select Recovery Guru for that RAID Module and click YES at the last resort option asking if you want to remove the module from the configuration This does not cause the remaining modules to be renumbered RAID Manager 6 1 User s Guide October 1997 Health Check TABLE7 8 Troubleshooting for Health Check Health Check results take a long time to display Cause Normally you see Health Check s results in a few seconds However if you have selected All RAID Modules or there are I O operations running you might notice a delay Also there could be instances where an unresponsive component or other status change affects the controller s ability to provide a result in Health Check although such occurrences are rare Action If you experience long delays in performing Health Check you might try checking one RAID Module at a time or selecting Health Check at a time of low syste
70. SNMP traps See SNMP Notification in the RAID Manager Installation and Support Guide for details on enabling this option RDAC The Redundant Disk Array Controller RDAC Driver is part of the RAID Management software package For RAID Modules with redundant controllers this host based driver manages the I O data path s If a component fails on the data path interface cable controller host adapter and so on that causes the host to lose communication with a controller the RDAC driver automatically reroutes all I O operations to the other controller Caution You do not have RDAC failover protection if you are using the Networked version of this software or if the RAID Module is using the independent controller configuration Chapter 2 Features Common to All Applications 25 26 Note Your operating system may have special requirements for supporting RDAC which will be described as part of this software s installation process See the rdac man page for details and to determine how RDAC provides redundant path protection for your system Recovery Guru Ideally your RAID Module s are operating normally thus status information reported for modules LUNs drives and controllers is Optimal However if your module has operating problems you may notice error messages on your console or in Message Log Therefore any time you suspect a component problem or failure select Recovery Guru Caution Al
71. This section provides information to help you determine the probable cause and action to take for common problems you may encounter as you use any application and includes the following sections General Troubleshooting page 191 a Online Help page 194 a Locate Module page 195 a Module Profile page 195 RAID Manager 6 1 User s Guide October 1997 General Troubleshooting TABLE 7 2 General Troubleshooting All Applications A RAID Module is listed that I have removed from my system Cause This software does not automatically remove modules from configuration thus a module you remove will continue to be listed in the RAID Module Selection box and the Select Module main window Action If you want to remove a RAID Module do the following Physically remove the module from your host system Choose Select Module Highlight the module you wish to remove Select Remove The RAID Module no longer appears in the Select Module list or the RAID Module Selection Box rho Component module status other than Optimal Cause Any status other than Optimal can usually warrant attention because the module is not operating in a normal condition The most common causes are e At least one drive has failed e A drive has been replaced and is reconstructing e A LUN is formatting e A controller has been placed offline or has failed e A module component had failed such as a power supply or fan Action
72. a time Number of LUNs Indicates how many LUNs are currently configured on the set of drives drive group Applicable only for configured drive groups Chapter 3 Using the Configuration Application 49 50 TABLE 3 1 Main Configuration Window Description Continued Window Element Description Procedures Drive Groups Area Continued RAID Level Shows the RAID Level of the drive group Possible RAID Levels are 0 1 3 and 5 This is only applicable for configured drive groups Each LUN in a drive group has the same RAID Level Drives Shows how may drives comprise the drive group Total Capacity MB Indicates how much capacity in megabytes is available on the drive group The capacity reflects any redundancy or RAID 1 mirroring factors For example a drive group composed of RAID 1 LUNs has half the capacity of one with RAID 0 LUNs The total capacity for an unassigned drive group does not reflect any redundancy or mirroring factors Remaining Capacity MB Indicates the largest contiguous capacity in megabytes still available for configuring LUNs on the drive group The capacity reflects any redundancy or RAID 1 mirroring factors except for an unassigned drive group RAID Manager 6 1 User s Guide October 1997 TABLE 3 1 Window Element Main Configuration Window Description Continued Description Procedures Logical Unit LUN Information Area Provid
73. able to communicate with one or more drives that are part of a drive group containing logical units In this case the software marks the drive status as Unresponsive If the drive receives I O the controller will fail it Important If a series of drive failures and or unresponsive drives are reported at the same time the condition may be caused by a channel failure See Chapter 5 Using the Recovery Application for a description before attempting any recovery procedures Action Click Module Profile gt Drives to determine which drive is Unresponsive Then if there are no I Os and you want to manually fail it use the Recovery Application RAID Manager 6 1 User s Guide October 1997 TABLE 7 11 Troubleshooting for Recovery Guru Recovery Guru doesn t report a drive failure when I remove a drive If there is no I O occurring for that drive Recovery Guru reports an Unresponsive Drive If there is I O occurring the controller will fail the drive and Recovery Guru reports this slso Caution Never remove drives from a module unless the controller has marked them as Failed Doing so could result in data loss for the affected LUN drive group Use Recovery Guru if you suspect problems with a drive Manual Parity Check Repair TABLE 7 12 Troubleshooting for Manual Parity Check Repair Parity check repair takes a long time Cause How long parity check repair takes depends on your I O load the number and
74. ange a RAID Module s configuration Normally when you receive the RAID Module there are default LUNs and drive groups already configured This default configuration may work for your environment However you may want to create a hot spare and or the LUNs may not be set according to your needs for example number of LUNs RAID Level etc Are there any operations that do not allow other operations to be performed at the same time Yes Certain operations in RAID Manager require exclusive access to the RAID Module in order to complete successfully that is no other operations can be performed Such operations include e Configuration Delete for LUNs and Reset Configuration e Recovery Fixing Multiple Drive Failures with Recovery Guru and formatting a LUN with Options gt Manual Recovery gt Logical Units e Maintenance Tuning Firmware Upgrade gt Offline method Wait for the operation that has exclusive access to complete before performing another operation in the same RAID Module or select another RAID Module Also consult the RAID Manager Installation and Support Guide for additional considerations such as if LUNs on the RAID Module have file systems partitions or drive letters on them Caution If you are using the Networked version with the storage management software installed on more than one station or the RAID Module has a multi host configuration you must use caution when performing the tasks that ne
75. ardware messages when applicable The code indicates that a specific problem has occurred Click Show Details for the recommended Action to Take Identifies the affected controller by its system device name Displays more detailed information for the messages you select in the summary information window TABLE 4 3 explains the detailed information that each type of message provides when you click on Show Details Selects all the messages in the summary information window Changes what message types are displayed all types parity general or hardware See the procedure on page 87 TABLE 4 3 explains the detailed information that each type of message provides when you click Show Details Current Log Indicates what log is open for viewing Normally this is the default log file unless you open another log file Total Messages Indicates the number of messages displayed in the current log file Total Selected Indicates the total number of messages that you have selected or highlighted in the summary information window RAID Manager 6 1 User s Guide October 1997 v 1 To Use Message Log Ensure that the RAID Module you want is selected For instructions on how to select a RAID Module see Selecting a Module on page 33 Click Message Log The Status window is displayed FIGURE 4 2 Note When you first start the Status Application Message Log is displayed for All RAID Modules
76. ares that have already been created Note Each RAID Module can support as many hot spare drives as there are SCSI Channels probably either 2 or 5 depending on the model of your RAID Module 5 Do one of the following Chapter 3 Using the Configuration Application 69 70 a If you want to use drives automatically selected by the software click Create m Click Options The window displays two lists a Unselected Drives Indicates the unassigned drives that are not currently designated to be hot spares a Selected Drives Indicates the drives that have been automatically designated to be hot spares The total number is based on the number of drives you specified in the previous window 6 Highlight drives s from the Unselected Drives list and or the Selected Drives list then click Move Both lists show the new choices The Move button is dimmed if you specified the maximum number of remaining unassigned drives shown in the main Create window Note Make sure that the number of drives listed in the Selected Drives list equals the number you specified in the previous window If the numbers differ you cannot continue Click OK when finished selecting drives Click Create The main Configuration window is displayed The Drive Groups area of the window displays the following a A new hot spare drive group displays if there was not an existing hot spare drive group a The Drives column increases t
77. ash Module Profile TABLE 7 5 Troubleshooting for Module Profile All Applications The controller board name under Detailed Information Controllers is incomplete The controller board names both A and B are limited to 32 characters If your controller board name is longer you will see only the first 32 characters displayed in Module Profile Chapter 7 Common Questions and Troubleshooting 195 196 Configuration Troubleshooting This section provides information to help you determine the probable cause and action to take for common problems you may encounter as you use the Configuration Application TABLE 7 6 Configuration Troubleshooting Less capacity shows than I selected during configuration When using 5 drives to create a LUN you could see a capacity slightly less than you selected during configuration for example you see 1 97 GB instead of 2 GB on a RAID 5 9 drive LUN This can occur because the capacity you select is based on stripe size which depends on segment size times the number of drives Cannot add LUNs to an existing drive group Cause Either the drive group does not have any remaining capacity or you have created the maximum number of LUNs allowed Action If your existing configuration does not meet your needs you may have to delete all the LUNs in the drive group that you want to change then use Create LUN to re create the LUNs drive group you want Important If you
78. at is available for creation Note If the unassigned drive group contains drives with different capacities such as 2 GB or 4 GB this field initially reports capacity based on the smaller capacity drives Be sure to use the Options gt Drive Selection to select drives of the same capacity Number of Drives This field lists the number of drives you can use to create LUNs For new drive group LUNs the default setting usually equals the number of unassigned drives You can select number of drives only if you are creating a new LUN from unassigned drives Note The drives provided in the Number of Drives list can be less than e There are limitations on how many drives can comprise a single drive group therefore the list shows only the maximum allowed e If there are drives in the unassigned drive group that have failed they are not available for configuration and therefore will not be provided in the list the number shown in the unassigned drive group for two main reasons Number of LUNs The values allowed in this field depend on the following e The maximum LUNs allowed by the operating system installed on the host machine connected to your RAID Modules via SCSI cable e The number of LUNs already configured e The number of LUNs that the controllers in the RAID Module can bown The default setting is one LUN Chapter 3 Using the Configuration Application 59 AN 4 Do one of the following a
79. ayed a Parity is complete and no inconsistencies were found a Parity is complete and inconsistencies were found and repaired on specific LUNs Note While parity check repair is in progress you cannot perform other Recovery tasks You can click Cancel at any time during parity check However if you stop this operation your parity has not been completely checked or repaired Click OK at the parity is complete confirmation box The LUNs list is displayed RAID Manager 6 1 User s Guide October 1997 gt gt Performing Manual Recovery for Drives When to Use Use this option to view drive and LUN status information for a selected RAID Module and to manually perform recovery steps for drives In most cases however you should click Recovery Guru and follow the step by step instructions provided there Caution Do not use Manual Recovery unless specifically directed by Recovery Guru or a Customer Services Representative To do so could result in the loss of data Caution Do not attempt to manually recover from a drive failure without understanding the circumstances of the failure The correct procedure varies depending on the RAID Level of the affected LUN and the number of drives in one drive group that have failed Because of this it is best to use Recovery Guru Note You can quickly find drive status information using Module Profile Drive Details too See TABLE 5 2 for possi
80. ble drive statuses and action to take What Happens Status information displays for all the drives and LUNs in the selected RAID Module Also you have options to manually fail a drive begin drive reconstruction or revive a drive See FIGURE 5 4 for a window similar to the one you see when you click Options from the top menu then Manual Recovery Drives TABLE 5 8 describes the window elements Chapter5 Using the Recovery Application 129 Recovery qualab133 File Options Help Module Information RAID Module Manual Recovery Drives Location Drive Status Logical Units RAID Level Logical Unit Status Optimal Optimal Optimal Optimal Manual Parity Optimal Check Repair Optimal Optimal Optimal Optimal Optimal Optimal Optimal Optimal Optimal NNNFPRrPRPRPeHYP OO CO Of 1ooMoooowoo oo oy FIGURE 5 4 Main Manual Recovery Drives Window 130 RAID Manager 6 1 User s Guide October 1997 Note It is possible for all columns in this window to be blank except for Location and Drive Status This would occur if the drives are unassigned that is they are not part of a configured drive group For these drives there is no LUN under logical units RAID Level or logical unit status to report TABLE 5 8 Main Manual Recovery Window Description Window Element Location Drive Status Logical Units RAID Level Logical Unit Status Fail Recons
81. cable includes a system device name The A and B are relative names to identify the controllers Status Shows the operating condition of the controller For an explanation of possible statuses and any recommended action to take see TABLE 5 4 Place Offline Enables you to manually place a controller offline which stops the controller from accepting I O requests See the procedure below Place Online Enables you to manually place a controller online which returns the controller to operating condition See the procedure on page 143 Placing a Controller Offline When to Use Use this option to stop a selected controller from accepting I O requests For example to replace a controller you want it to be offline When you place a controller offline its LUNs are reassigned to the other controller and it stops accepting any I O Caution Do not use Manual Recovery unless specifically directed to by Recovery Guru or a Customer Services Representative Doing so could result in the loss of data To Place a Controller Offline This option is not available dimmed if you select All RAID Modules or if the selected RAID Module has only one controller RAID Manager 6 1 User s Guide October 1997 Caution Do not attempt to manually place a controller offline without following the correct procedure especially if you are replacing a failed controller Because of this it is best to use Recovery Guru Ensure that
82. ce benefits each controller must own some of the LUNs a Deselect the automatic LUN Balancing option if you do not want the LUN Assignment changed The currently active controller continues to own all of the LUNs You can assign some of the LUNs to the other active controller later using LUN Balancing see page 153 change cannot be undone through this interface You can use the command line utility l Caution Choosing OK in Step 5 changes the controller pairs to active active This rdacutil to revert to an active passive configuration if desired Chapter 6 Using the Maintenance Tuning Application 163 164 Note You must use the command line utility rdacutil if you want to change an active active controller pair to active passive For example to change RAID Module 1 s controller pair to active passive type rdacutil m 1 RAID Module 001 Click OK a If successful the list updates to show the new controller mode of the selected RAID Module s a If a problem occurs you receive notification Swapping Active Passive Controllers When to Use Use to switch the controller modes in an active passive pair that is change the active controller to passive and the passive controller to active You may want to swap an active passive controller pair m When a Recovery procedure requires it a If you have multiple RAID Modules you may want to use this option to swap controller modes so that all you
83. cifics of a module s configuration Once you have saved the profile you can print it using the printer utility available on your system Important You should save a module s profile to a file when you first install it and any time you change your configuration You can use this information if you need to perform any recovery or maintenance tasks Also this file is useful when you want a copy for a quick reference if you want a permanent record or you want to send information to your Customer Services Representative for troubleshooting RAID Manager 6 1 User s Guide October 1997 TABLE 7 1 Frequently Asked Questions Continued Common Questions All Applications Can I confirm my current configuration Yes You can view a module s configuration details by using Module Profile This provides you with a quick overview of any selected RAID Module Also you can save the profile information to a file then print a copy of the file to have a snapshot of your configuration see Saving Module Profile Information on page 42 Important You should save a module s profile to a file any time you change your configuration You can use this information if you need to perform any recovery or maintenance tasks Also this file is useful when you want a copy for a quick reference if you want a permanent record or you want to send information to your Customer Services Representative for troubleshooting When should I ch
84. command line utilities stopping the operation 128 parityck see command line utilities path display for firmware upgrade 175 performing Index 221 see procedures placing a controller offline manually when to use 142 placing a controller online manually procedures 144 when to use 143 power supply dual failure on drive tray 100 123 failure on drive tray 100 123 procedures changing controller modes 162 164 Log Settings 94 reconstruction rate 105 creating hot spares 69 LUNs drive groups 56 deleting drive groups LUNs or hot spares 72 failing a drive 132 formatting logical units manually 138 listing different types of messages 87 listing locating drives 53 manually checking repairing parity 127 opening an existing log file 88 performing an immediate check 99 performing manual recovery for controller pairs 140 drives 129 logical units 135 placing a controller online 144 reconstructing a drive 133 recovering from component failures 121 refreshing Message Log 91 resetting a module s configuration 75 reviving drives 134 logical units 139 saving module profile information 42 selecting a module 34 viewing Message Log 85 module profile 39 product ID controllers 40 drives 41 product serial number controllers 40 222 RAID Manager 6 1 User s Guide October 1997 program group application chart 7 task summary charts 10 quit 30 R RAID 0 described 23 RAID 1 can
85. configuration considerations 55 differences between types 187 drive group 155 drives 40 incorrect size 117 less than expected 196 logical units 41 51 changing 67 LUN parameter 62 see also available capacity see also remaining capacity see also total capacity Change To Active Active Controllers procedures 162 when to use 162 changing caching parameters 166 controller assignment for LUNs 153 controller mode 160 default Message Log file 96 log size before notification 96 logical unit parameters 66 Message Log display 82 module checking interval 96 parity settings 180 RAID Module name information 35 reconstruction rate 103 150 channel failure 123 checking module status 97 parity progress 127 reconstruction progress 104 checking interval changing 96 described 93 214 RAID Manager 6 1 User s Guide October 1997 command line utilities arraymon described 15 drivutil described 14 fwutil described 14 healthck described 14 lad described 14 logutil described 14 nvutil described 14 parityck described 14 raidcode txt described 14 raidutil described 14 rdac described 14 rdacutil described 14 xrdaemon described 15 rdriver described 15 rmevent described 14 rmparams described 15 rmscript described 15 storutil described 14 symping described 14 sysmsm described 14 common features 17 definitions and explanations 17 navigating 27 screen elements described 29
86. construction Status window is displayed FIGURE 4 6 Note If no LUNs are currently reconstructing on the selected RAID Module click OK in the message box then select another module or option Each histogram shows the amount of reconstruction accomplished as a percentage The response time for updating these histograms depends on the number and size of the LUNs undergoing reconstruction and the rate setting for the reconstruction operation Furthermore if you exit LUN Reconstruction any LUNs that have completed reconstruction show 100 are not displayed the next time you select LUN Reconstruction 3 Change the reconstruction rate if you want by moving the slider bar Choose either m System performance to speed up system I O and slow reconstruction a Reconstruction performance to speed up the reconstruction rate and slow system I O The rate is automatically set when you move the Slider bar however you may notice some delay in the system s response if many or very large LUNs are reconstructing Note To change the reconstruction rate for all LUNs whether they are reconstructing or not use the Maintenance Tuning Application See Changing the LUN Reconstruction Rate on page 150 Reconstruction rate settings each correspond to a different interval based on the number of blocks reconstructed and the number of seconds delay between reconstruction operations for system I O operations to take place
87. ction LUN Reconstruction Rate 2p LUN Balancins Caching Parameters Instruction Save Help If you want to view the progress of any Logical Units LUNs currently reconstructina ao to the Status Application FIGURE 6 2 Main LUN Reconstruction Window TABLE 6 2 Main LUN Reconstruction Window Elements Window Element Description Drive Group Provides the drive group number for the selected RAID Module LUN Provides the LUN number LUN on a particular drive group Save Saves any reconstruction rate changes you make Reconstruction Rate Optimize For System Indicates the rate that favors system performance over reconstruction Performance speed Reconstruction Indicates the rate that favors reconstruction speed over system Performance performance Chapter 6 Using the Maintenance Tuning Application 151 152 To Change the LUN Reconstruction Rate If you select All RAID Modules this option is dimmed Make certain that the RAID Module you want is selected If you need instructions for selecting a RAID Module see page 33 before proceeding Select LUN Reconstruction Rate The Main LUN Reconstruction window is displayed FIGURE 6 2 Change the reconstruction rate if you want by moving the Slider bar toward either a System performance to speed system I O and slow reconstruction a Reconstruction performance to speed reconstruction rate and slow system I
88. ctual capacity that is available for creation Remember that all RAID Levels except RAID 0 use part of the drive s capacity for redundancy Click Create Click OK at the Confirm Create window The confirmation screen allows you to review the LUNs being created with their number RAID Level and capacity Select Cancel if this information is not correct Note After you click Create and then OK the main Configuration window displays Formatting until the operation is complete You can perform other configuration tasks or select another program application However you cannot perform any tasks on the new drive group while it is being created 60 RAID Manager 6 1 User s Guide October 1997 Caution If you are creating the first drive group LUN on the module from all unassigned drives in the module wait for the create format to finish before creating LUNs on additional drive groups 10 Make the LUNs part of your operating system Your operating system may have additional requirements to complete the configuration process so that it can recognize the new LUNs including adding drives and possibly rebooting your system See the RAID Manager Installation and Support Guide for restrictions and Chapter 7 for troubleshooting information and the appropriate system documentation for specific details Create LUN Options LUN Drive Caching Segment LUN X Capacity hg Selection Parameters K Size S Assignm
89. d in the controller s cache memory The use of write caching increases overall performance because a write operation from the host machine is considered completed once it is written to the cache m Write Cache Mirroring Enables cached data to be mirrored across two redundant controllers with the same size cache The data written to the cache memory of one controller is also written to the cache memory of the other controller Therefore if one controller fails the other can complete all outstanding write operations m Cache Without Batteries Enables write caching to continue even if the batteries are discharged completely not fully charged or if there are not batteries present If you select this option without a UPS for additional protection you could lose data if a power failure occurs Note You can quickly determine whether cache settings are enabled for the LUNs on a particular RAID Module or determine how much processor or cache memory the controllers have by selecting Module Profile gt Controllers detailed information What Happens The software displays the current settings for these caching parameters for each LUN in the selected RAID Module Keep in mind that the parameters are interdependent Consequently when you make a change to one parameter another parameter could also become enabled or disabled RAID Manager 6 1 User s Guide October 1997 See FIGURE 6 7 for a window similar to the one you see when yo
90. d the drive activity lights flash steadily throughout the reconstruction process Parity Parity is additional information stored along with the data that enables the controller to reconstruct lost data on RAID Level 1 3 or 5 LUNs if a single drive fails The software performs an Automatic Parity Check Repair operation if enabled that helps guarantee data integrity of LUNs by scanning and repairing any damaged parity You can also perform a Manual Parity Check Repair if desired Parity Check Repair performs the following functions a Scans optimal RAID 1 3 and 5 LUNs and checks the parity for each block in the LUN RAID 1 striping and mirroring does not have true parity but parity check compares data on each mirrored pair block by block a Repairs any parity inconsistencies found during the parity check On a RAID 1 LUN the controller changes the data on the mirror disk to make it match the data on the data disk On RAID 3 or 5 LUNs the controller changes the parity so that it is consistent with the data Caution RAID Level 0 does not have parity and therefore cannot be checked and repaired Additionally you cannot run a parity check repair on RAID 1 3 or 5 LUNs with a status other than Optimal Parity check repair fixes parity not data If the parity inconsistencies resulted from corrupted data the data is still corrupted but the parity is correct Parity inconsistencies might indicate corrupt data You may be able to u
91. de the full path name for the print file Action If you selected Send to Printer Click OK in the Error Window Define a default printer refer to your operating system documentation if needed Re select Help and try to print again If you selected Write to File Click OK in the Error Window Re select File Print Topic Specify the full path name on your local file system for the print file before selecting OK Help files are missing or corrupted message Online Help Action Check that the correct Help files are installed in the installation directory see the Installation And Support Guide for default directory information You should have two help files symhelp txt and glossary txt Re install them if necessary RAID Manager 6 1 User s Guide October 1997 Locate Module TABLE 7 4 Troubleshooting for Locate Module All Applications Locate Module takes a long time to start flashing activity lights If you have heavy I O or are currently making configuration changes you might notice a delay when you click Locate Module Locate Module doesn t work Locate Module may not help you identify a RAID Module under two conditions If All RAID Modules is selected this option is dimmed If all LUNs involved have a Dead status the software cannot flash the activity lights on the drives Note If there are any failed drives in the drive group these drives are skipped and their activity lights do not fl
92. default drives shown Important This option is dimmed if you are adding LUNs to an existing drive group because you must use the same set of drives when adding LUNs Move is dimmed if you specified the maximum number of remaining unassigned drives in the main Create window If you make any changes make sure that the number of drives shown in the Selected Drives list matches the number of drives you specified in the main Create window If the numbers do not match you see an error message and cannot continue until these numbers match You can highlight drives in both the Unselected and Selected lists and then select Move For best performance you should specify drives over as many drive channels as you can If possible do not select drives that share the same channel for example do not select drive 1 1 1 2 and 1 3 because these are all on drive channel 1 However this is a valid configuration the only risk is that you would lose access to these drives if the drive channel fails If your unassigned drive group contains drives with different capacities such as some 4 GB and some 7 GB use this option to select either the smaller capacity drives only or the larger capacity drives only Important With mixed capacity drives in this drive group the main Create LUN window initially bases the available capacity on the capacity of the smaller drives For example if the unassigned drive group consists of five drives
93. displaying 199 listing different types of messages 87 Log Settings main screen 95 main window 83 message type general details 86 hardware details 86 parity details 86 220 RAID Manager 6 1 User s Guide October 1997 no match found message 200 Open Log main screen 89 procedures 85 see also command line utilities troubleshooting 199 updating 91 what happens 83 when to use 82 messages configuration change detected 184 copying details 85 99 default log file not found 200 firmware file error 211 format fail 198 log file is corrupted 88 Manual Parity Check Repair terminated 207 no match found 200 optimal Health Check not done 202 206 selection is not a file 91 192 temperature exceeded 101 123 threshold level reached 192 troubleshooting 190 unresponsive drives 202 206 mirrored pair drives listed 51 see also RAID 1 mismatch drive status 113 mode displayed for a module 39 no controller mode 209 modifying LUNs drive groups 66 module see RAID Module Module Profile controller name troubleshooting 195 how to determine controller number and type 40 firmware version 40 procedures 39 summary information screen 38 troubleshooting 195 viewing configuration details 185 what happens 37 when to use 37 see also Save Module Profile module status non optimal 191 unexpected 205 208 multiple drive failure 101 122 multiple unresponsive drives 101 122 multiple unresponsive driv
94. doesn t change from Reconstructing Cause This could occur after a Manual Recovery task is completed especially LUN Reconstruction or because data was reconstructed on a hot spare the hot spare drive becomes In Use the LUN status changes to Reconstructing but may not return to Optimal when reconstruction is completed Important If reconstruction was interrupted on a hot spare drive because another drive failed in the same drive group LUN the LUN is probably Dead with two Failed drives and you have lost data You should select Recovery Guru and follow the procedure provided to replace the newly failed drive Action Wait for the background monitor to run default is five minutes and to update the status OR To update immediately do one of the following e Re select the RAID Module e Exit and re enter the application Controller status other than Optimal Cause A controller has been placed offline or has failed Action Select Recovery Guru and follow the step by step procedures it provides for restoring the controller see Checking for Component Failures Using Recovery Guru in Chapter 5 Using the Recovery Application Component status doesn t update after a recovery procedure has been performed Cause A configuration change may not be detected yet Action If you use Recovery Guru the Fixed column updates to YES when you successfully complete a recovery procedure However t
95. drive however if the drive is being used it means that the affected logical unit has at least one Failed drive Use Recovery Guru to correct the problem drive as soon as possible RAID Manager 6 1 User s Guide October 1997 TABLE 5 2 Drive Status Possible Drive Status Continued Indication Action to Take Offline Standby or Spare Stdby Replaced Mismatch Unresponsive The controller has placed the drive Offline because data reconstruction failed and a read error occurred for one or more drives in the LUN The affected logical unit is Dead and all its drives are probably either Failed or Offline The hot spare drive is currently not in use e The Standby status is shown only in List Locate Drives when you select the hot spare group e The Spare Stdby status is the same as Standby but is shown in all other screens where drives are displayed for example Module Profile gt Drives The drive has been replaced is being formatted or is reconstructing The controller has sensed that the drive has some parameters different than expected such as sector size SCSI Channel or ID The controller is unable to communicate with a drive that is part of a drive group containing LUNs You can determine which drive is Unresponsive using Module Profile gt Drives in all applications List Locate Drives in the Configuration Application Recovery Guru or Options gt Manual Recovery gt Dri
96. drive group Because Recovery Guru s diagnosis takes into account each RAID Module s configuration that is the relationship between RAID Level and drive groups independent controllers etc its step by step procedure ensures that you are correcting the right problem Possible Component Statuses In the event some component fails the software reports a status other than Optimal The quickest way to determine a module s status is to use Recovery Guru or Health Check in the Status Application You can also use Module Profile to view the Detailed Information for the desired component m TABLE 5 2 shows the possible drive statuses m TABLE 5 3 shows the possible LUN statuses m TABLE 5 4 shows the possible controller statuses TABLE 5 2 Possible Drive Status Drive Status Indication Action to Take Optimal Failed In Use or Spare The drive is functioning normally The drive has failed and is no longer functioning The hot spare drive is currently in use and is taking over for the drive specified in the brackets e The In Use x y status is shown only in List Locate Drives when you select the hot spare group e The Spare x y status is the same as In Use but is shown in all other screens where drives are displayed for example Module Profile gt Drives No action required Use Recovery guru to replace the drive as soon as possible see page 118 No action required for the hot spare
97. drives LUNs data path cables terminators controllers or host adapters other component failures fan power supply and LUN create formats that fail See TABLE 5 6 for a list and description of possible failures Indicates whether you have fixed that failure The column appears blank if the RAID Module is Optimal that is there are no failures NO in the column means that the failure has not been fixed Highlight this module and click Fix to follow the step by step instructions for fixing this failure YES in the column means that you selected Fix and performed the step by step instructions The next time you select Recovery Guru any items that had YES should appear as Optimal and this column is blank Enables you to perform recovery procedures for modules with statuses other than Optimal You can only select one failure at a time to perform a recovery procedure See the procedure on page 121 Note You should always use Recovery Guru before attempting any Manual Recovery procedure RAID Manager 6 1 User s Guide October 1997 To Check for Component Failures Ensure that the RAID Module you want is selected If you need instructions for selecting a RAID Module see page 33 before proceeding Click Recovery Guru The Main Recovery Guru window FIGURE 5 2 is displayed Highlight one failure and do either of the following a Click Fix This option is dimmed if all modules have Optimal statuses Also
98. e When to Use Use this option to change the reconstruction rate for the LUNs on a selected RAID Module You can change the reconstruction rate even when LUNs are undergoing reconstruction Note If you need to view the reconstruction progress for LUNs currently reconstructing use the Status Application See Viewing LUN Reconstruction Progress and Changing the Reconstruction Rate on page 103 What Happens The display shows the drive group LUNs for the selected RAID Module A Slider bar shows the current setting for each LUN s reconstruction rate See FIGURE 6 2 for a window similar to the one displayed when you select LUN Reconstruction Rate TABLE 6 2 describes the window elements Reconstruction rate settings each correspond to a different interval based on the number of blocks reconstructed and the number of seconds delay between reconstruction operations for system I O operations to take place From left to right the points on the Slider bar indicate the following reconstruction rates blocks seconds delay Slow 256 0 8 Slow medium 256 0 4 Medium 512 0 4 Medium fast 512 0 2 Fast 1024 0 1 RAID Manager 6 1 User s Guide October 1997 Maintenance and Tuning qualab133 File Options Help Module Information RAID Module qualab133_001 2 Select Locate Module Module Module Profile Logical Unit LUN Reconstruction Rate Reconstruction Rate Optimize For Reconstru
99. e contents The SCSI command write buffer failed The software was unable to reset the controller One or more LUNs for the selected module were not Optimal Upgrading to the selected firmware version requires that you use the Offline method The current firmware version is unable to upgrade to the files you selected The files you selected are not compatible with the current firmware version s on the selected module s controller s Stop I O to that module and be sure file systems are unmounted then try to upgrade the firmware again Copy the firmware files to the default subdirectory in the installation directory again If you see this message a second time one or more of your files are most likely corrupt Obtain a new copy of the firmware upgrade files Try to perform the upgrade again for this module If it fails a second time call your Customer Services Representative Try to upgrade the firmware again Use Recovery Guru in the Recovery Application to restore the LUNs to an Optimal status then try to upgrade the firmware again See Checking for Component Failures Using Recovery Guru on page 118 Try to upgrade the firmware again and this time be sure to select Offline Most likely you need to upgrade to an intermediate version of firmware Try to upgrade to a version earlier than the one you selected If that upgrade is successful perform a second upgrade for this latest firmware version
100. e 160 What Happens 160 Before You Begin 160 Changing To Active Active Controllers 162 Swapping Active Passive Controllers 164 Viewing and Setting Caching Parameters 166 When to Use 166 What Happens 166 v To View and Set Caching Parameters 168 Upgrading Controller Firmware 170 When to Use 170 What Happens 170 Before You Begin 170 v To Upgrade Controller Firmware 172 Confirming the Firmware Upgrade 177 Changing Automatic Parity Check Repair Settings 180 When to Use 180 What Happens 180 v To Change Automatic Parity Check Repair Settings 181 7 Common Questions and Troubleshooting 183 Common Questions 184 Troubleshooting 190 Common Troubleshooting All Applications 190 Configuration Troubleshooting 196 viii RAID Manager 6 1 User s Guide October 1997 Status Troubleshooting 199 Recovery Troubleshooting 203 Maintenance Tuning Troubleshooting 209 Contents ix x RAID Manager 6 1 User s Guide October 1997 CHAPTER 1 Program Application Overview m Types of Host RAID Module Configurations Supported page 1 a About This Software page 6 a Task Summary Charts page 10 Types of Host RAID Module Configurations Supported The storage management software supports three main configurations of host machines connected by SCSI Buses to the RAID Modules Caution No configurations or combinations are supported beyond those described in this section Furthermore the software s operation cannot be gua
101. e 82 such as component failures parity check repair results and general status changes Performs an immediate check of the selected RAID page 97 Module s and displays the results including recommended Action To Take when appropriate Displays reconstruction progress and enables you to page 103 change the reconstruction rate for LUNs undergoing reconstruction on a selected RAID Module Provides information about an option when you move the mouse over the option button For top menu options you must click on the option and hold down the left mouse button Chapter 4 Using the Status Application 81 Using Message Log Message Log When to Use Use this option to view historical information for a RAID Module a When you are notified of a component failure m Ifa parity check has been performed and parity inconsistencies were found and repaired m When you are aware of a general status change Message Log identifies the date time an event was detected what RAID Module and controller are affected and what type of event has occurred including any relevant code data While in Message Log you can perform several tasks If you want Click For more details see To view more detailed messages Show Details Using Message Log page 82 To change what types of messages List Type Listing Different Types of page 87 are displayed Messages To open a different log file File gt Open Log Opening an
102. e Module Profile ustisbin osar Directories drivutil fwutil healthck lad loguti nvutil parityck raidutil rm EE core F Selection tusr sbin osay FIGURE 2 8 Save Module Profile Window Chapter 2 Features Common to All Applications 43 44 TABLE 2 9 Save Module Profile Window Description Window Elements Description Filter Enables you to narrow the path parameters to specific directories file names and file extension Using this box and the Filter button updates the directories and files Directories Files Lists directories and files you can scroll through to select a specific file name Selecting directories and files updates the Selection field Selection Lists the specific file name you type or updates to show the path parameters selected by using Filter RAID Manager 6 1 User s Guide October 1997 CHAPTER 3 Using the Configuration Application a List Locate Drives page 52 m Creating Logical Units LUNs page 55 m Changing LUN Parameters page 66 m Creating Hot Spare Drives page 68 a Deleting Drive Groups LUNs or Hot Spare Drives page 71 m Resetting the Configuration page 75 45 46 Overview Use the Configuration Application to group your RAID Module drives into logical units Normally when you receive a RAID Module there will be default logical units LUNs and drive groups already defined This factor
103. e drive group share the same physical drives and RAID Level Each LUN is seen by the operating system as one drive If you create only one LUN on a drive group the terms LUN and drive group are synonymous However their designated number may be different For example drive group 2 may contain only one LUN but its number could be LUN 3 FIGURE 2 2 is a representation of LUNs in drive groups Chapter 2 Features Common to All Applications 19 b Se e e F 7 TT Tr j j j j j j Configured Drive Group of 10 drives with 1 LUN fC Unassigned Drive Group of 23 drives F TT J TT J F J i i i Two hot spare drives r a an B n Bi Bg 5 Ni gE AN FIGURE 2 2 Drive Groups and LUNs Hot Spare Drive A hot spare drive is a drive that contains no data and acts as a standby in case a drive fails in a RAID 1 3 or 5 LUN The hot spare drive adds another level of redundancy to your RAID Module If a drive of the same or smaller capacity fails the hot spare automatically takes over for the failed drive until you replace it Once you replace the failed drive the hot spare automatically returns to a Spare Stdby standby status after reconstructio
104. e drives including location status and manufacturing details m LUN parameter settings Information contained in the Module Profile during initial installation and any time you change your configuration You can use this information if you need to perform any recovery or maintenance tasks It does not however copy configuration information that you could later use to automatically restore your module Once the file is saved you can print it using the print utility available on your system f Caution It is very important to save the information see Saving Module Profile What Happens The software displays a summary profile of the selected RAID Module including information on its controller s disk drives and LUNs When you click Module Profile the Module Profile window is displayed FIGURE 2 7 TABLE 2 5 describes the window elements Chapter 2 Features Common to All Applications 37 Module Profile Profile for qualab133_001 Detailed Summary Information Information Controllers Controllers Name Serial Number Mode Number of LUNs A cltSd0s0 1763852685 Active 3 Drives B cOt4d3s0 1762549099 Y2005 Active 4 Disk Drives Number of Drives 35 FIGURE 2 7 Module Profile Summary Information Window 38 RAID Manager 6 1 User s Guide October 1997 TABLE 2 5 Module Profile Summary Information Window Description Window Element Description Name Identifies the controller s
105. e utilities S Save Log As when to use 90 Save Module Profile file selection screen 43 procedures 42 troubleshooting 184 what happens 42 when to use 42 184 screen displays and elements applications overview 7 common elements 29 Configuration Create LUN 57 Create LUN Options 61 Maintenance Tuning 146 Auto Parity Settings 181 Caching Parameters 167 Controller Mode 161 changing confirmation 163 Firmware Upgrade compatible files versions 174 LUN Balancing all RAID Modules 157 one RAID Module 155 LUN Reconstruction Rate 151 Module Profile 38 224 RAID Manager 6 1 User s Guide October 1997 online help 31 program group icons 6 28 Recovery Manual Parity Check Repair 126 Manual Recovery Controller Pairs 141 Drives 130 Logical Units 136 Recovery Guru 119 Save Module Profile 43 Status Health Check 98 Log Settings 95 LUN Reconstruction 104 Message Log 83 Open Log 89 SCSI ID displayed controllers 40 segment size changing 67 displayed 41 LUN parameter 64 Select Module add described 35 edit described 35 find described 35 remove described 35 selecting hot spare drives 70 manual parity 125 multiple items 27 options with keyboard 27 RAID Level 58 RAID Modules 33 Recovery Guru 118 types of messages 87 selection not a file message 91 192 serial number drives 41 module 39 settings see procedures SNMP defined 25 software common options 8 common
106. econstruction Chapter 5 Using the Recovery Application 133 Reviving a Drive When to Use You may be able to recover from certain types of drive failures using this option For example if you remove a wrong drive that was Optimal this procedure may work Caution Never use this procedure if the controller has marked the drive as failed Doing so could result in the loss of data because parity calculations made during subsequent writes are made without the Failed Drive Caution Do not use Manual Recovery unless specifically directed by Recovery Guru or a Customer Services Representative To Revive a Drive This option is dimmed if you select All RAID Modules You can only revive drives with Failed drive statuses and the affected LUNs cannot be Reconstructing or Formatting Use this procedure only if you accidentally removed the wrong drive and it was Optimal Caution Do not attempt to manually revive a drive without understanding the circumstances of the drive failure For example if you mistakenly removed or failed a drive with an Optimal status and have now returned the Optimal drive to its correct location this procedure may work Because of this it is best to use Recovery Guru Ensure that the RAID Module you want is selected If you need instructions for selecting a RAID Module see page 33 before proceeding Click Options gt Manual Recovery gt Drives The Recovery Window is display
107. ecovery Application to correct the problem Reset Configuration doesn t work Cause If this software detects any drives as removed or unresponsive Reset Configuration will not work Also if the selected RAID Module has an independent controller configuration this option is dimmed Action Use Module Profile to verify that all drives are Optimal and that the controller is not in an independent controller configuration neither controller is marked Inaccessible Try File gt Reset Configuration again Caution Any time you use Reset Configuration you will lose all data on your drives Only select this option as a last resort if your configuration is inaccessible or you want to start over You will need to use Create LUN to re configure your drive groups LUNs RAID Manager 6 1 User s Guide October 1997 Status Troubleshooting This section provides information to help you determine the probable cause and action to take for common problems you may encounter as you use the Status Application and includes the following sections m Message Log page 199 a Health Check page 201 m LUN Reconstruction page 203 Message Log TABLE 7 7 Troubleshooting for Message Log It takes a long time to display or update the Message Log Cause Normally when you select Message Log or Options Refresh All to update the log you should see the display in a few seconds However if the log file is very large you might no
108. ed FIGURE 5 4 Highlight the drive s you want to revive The Revive option is dimmed if you highlight any drive that has a drive status other than Failed Click Revive then OK When the drive is revived click OK The drive list shows updated status information 134 RAID Manager 6 1 User s Guide October 1997 Note Click Manual Parity Check Repair to check parity on the LUNs that the revived drives contain gt gt Performing Manual Recovery for LUNs When to Use Use this option to view LUN status information for selected RAID Modules and to manually perform recovery steps for LUNs In most cases however you should click Recovery Guru and follow the step by step instructions provided there Caution Do not use Manual Recovery unless specifically directed by Recovery Guru or a Customer Services Representative Doing so could result in the loss of data Caution Do not attempt to manually recover LUNs without understanding the circumstances of the Degraded or Dead status The correct procedure varies depending on the RAID Level of the affected LUN and the number of drives in the same drive group that have failed Because of this it is best to use Recovery Guru Note You can quickly find LUN status informa tion using Module Profile Logical Unit Details too See TABLE 5 3 for possible LUN statuses and action to take What Happens Status information displays for all
109. ed exclusive access to ensure the two hosts do not send conflicting commands to the controllers in the RAID Modules Chapter 7 Common Questions and Troubleshooting 185 186 TABLE 7 1 Frequently Asked Questions Continued Common Questions All Applications When should I use the Reset Configuration option of the File menu Hopefully never Use this option only as a last resort if your configuration is totally inaccessible or you want to start completely over This option allows you to reset the drive groups and LUNs on the RAID Module back to a default configuration based on settings specified in the controller Caution You will lose all data on the selected RAID Module Are there any special considerations for a RAID Module with two active controllers Yes but only if you want to manually assign balance the LUNs The software automatically assigns all LUNs on a new drive group to one of the active controllers during LUN creation The LUNs are balanced across active controller pairs on a drive group basis not an individual LUN basis The odd numbered drive groups are assigned to one active controller and the even numbered drive groups are assigned to the other active controller There are two applications where you can manually assign balance the LUNs e If you are creating LUNs you can use Create LUN Options LUN Assignment if you want to assign the new drive group and its corresponding LUNs to a specific controller
110. ency of notification RAID Manager 6 1 User s Guide October 1997 Log Settings Log Settings Applies To All RAID Modules Default Log File Log Size Before Notification 40 PW Kilobytes 1000K maximum Check RAID Module Every 5 4 Minute s FIGURE 4 4 Main Log Settings Window Chapter 4 Using the Status Application 95 96 TABLE 4 6 Main Log Settings Window Description Parameter Procedure For Changing Default Setting Default Log File Log Size Before Notification Check RAID Module Every Enter the new file name you want future RAID events data logged to Be sure to include the correct directory path if different from the current default log file Enter the value you want the log size to be before notification NOTE Setting the log size threshold at a high or low value does not improve or detract from performance Also the log size threshold does not limit the size a log file can become instead it increases the size the log can reach before the Threshold Level Reached message appears Enter the frequency in minutes that you want the background monitor to check the RAID Modules Caution Setting this value too small could cause the check to affect system I O performance Setting this value too large could delay notification of serious problems rmlog log Default 40 K Minimum 1K Maximum 1000K Default 5 minutes Minimum 1 minute Maximum 59 minutes RAI
111. ent Drive Selection Unselected Drives Selected Drives Drive Location Capacity MB Drive Location Capacity MB 5 14 4095 F 4095 i 4095 4095 4095 Cancel FIGURE 3 4 Create LUN Options Window Chapter 3 Using the Configuration Application 61 62 TABLE 3 3 Create LUN Options Window Description Option Use Reset Returns the settings for the option currently displayed to the same values they had when you first entered the Options window however Caching Parameters disables all parameters OK Returns to the main Create LUN window Therefore make changes to any options you want before selecting OK You can switch between options without losing changes Cancel Cancels all option settings and returns you to the main Create LUN window LUN Capacity Enables you to change the default capacities for the LUNs you are creating Normally you should use all of the available capacity That is the Remaining Group Capacity should be 0 after changing the capacities of the LUNs Important The capacities of the LUNs must not exceed the total remaining capacity If they do the Remaining Group Capacity field indicates the amount exceeded in red RAID Manager 6 1 User s Guide October 1997 TABLE 3 3 Create LUN Options Window Description Continued Option Use Drive Selection Enables you to change the set of drives used in the drive group Normally you should use the
112. er file name Also be sure that the Selection box contains the file name you want RAID Manager 6 1 User s Guide October 1997 Open Log Filter Directories Files Selection FIGURE 4 3 Main Open Log Window Chapter 4 Using the Status Application 89 90 TABLE 4 4 Main Open Log Window Description Window Element Description Filter Enables you to narrow the path parameters to specific directories file names and even file extension Using this Filter box and the Filter button updates the Directories and Files Directories Lists directories and files you can scroll through to select a specific file Files name Selecting directories and files updates the Selection field Selection Lists the specific file name you enter or selected Selecting OK opens the log file displayed here Saving Log as Another File Name When to Use Use this top menu option to save a selected log to another file For example you may want to save the default log file to a different file name when m The log file is getting too large m The log has exceeded the log size threshold level m You want to capture a specific time frame for analysis Note The Save Log As option maintains the original file and creates a duplicate which it identifies with the new file name that you assign Saving a log file to another file name does not delete the original file or change the default log that the software writes messages to
113. erent file As one of the actions you can take if the Threshold Level Reached message displays To control the size of the log file and provide better performance of Message Log s activities The larger the log becomes the longer it takes to display Message Log when you select or update it What Happens The software automatically writes future RAID events data to the file named here The default path is the installation directory and the file name is rmlog 1log When you select Message Log this file displays for All RAID Modules Note Changing the default log does not automatically change which log Message Log displays until you exit the Status Application To view a different log file see Opening an Existing Log File on page 88 Increase this value 1 If you want your log size threshold to be larger than the default setting of 40K 2 This does not set the actual size that the log can become instead it increases the size the log can reach before the Threshold Level Reached message appears What Happens The Threshold Level Reached message displays when you start any application if the size of the default log file exceeds the value set here Why To Use Increase this value if you want the background monitor to check the RAID Modules less frequently Decrease this value if you want the background monitor to check the RAID Modules more frequently For best results use the default value or smaller to ensure that y
114. es LUN information for the drive group you highlight in the Drive Groups area LUN Shows the number assigned to the Logical Unit LUN Group Shows the number assigned to a configured drive group consisting of one or more LUNs Device Name Indicates a system designated name that identifies the controllers LUNs in the selected RAID Module RAID Level Shows the RAID Level of the LUN Capacity MB Indicates how much capacity in megabytes is available on the LUN The capacity reflects any redundancy or RAID 1 mirroring factors For example a RAID 1 LUN has half the capacity of a RAID 0 LUN Status Gives the operating condition of the LUN For an explanation of possible statuses and any recommended action to take see TABLE 5 3 List Locate Drives Lists the drives comprising the drive group that you select from the Drive Groups area The list shows location capacity and status of each drive Locates the drives comprising the drive group by flashing drive activity lights Note If you select a RAID 1 drive group the mirrored pair drives are indicated by a number appearing in front of the drive location information For example 1 appears in front of the first drive in the first mirrored pair 2 appears in front of the first drive in the second mirrored pair and so on page 52 Create LUN Enables you to create new LUNs from unassigned drives or add LUNs on existing drive groups with remain
115. es message 202 206 N navigating 27 network version see also command line utilities no controller mode 209 no match found message 200 notification log size reached 93 see also SNMP number of drives changing 67 configuration limitation 196 described 59 displayed for drive group 50 selecting for configuration 59 number of logical units selecting for configuration 59 numbering drive groups 21 nvutil see command line utilities O Offline controller status 115 see also Manual Recovery Controller Pairs Online see Manual Recovery Controller Pairs online help can t access 194 can t print 194 copying topics 32 main screen 31 overview 30 printing topics 32 troubleshooting 194 Open Log main screen 89 procedures 88 when to use 88 operating condition see status optimal drive status 112 logical unit status 114 Optimal Health Check not done message 202 206 Options menu Auto Parity Settings 180 Log Settings 92 Maintenance Tuning 148 Recovery 110 Refresh All 91 Status 80 selection in Create Hot Spare 69 Create LUN 60 P parameters see Caching Parameters see logical unit parameters parity defined 24 message type details 86 progress of manual described 127 see also Auto Parity Settings see also Manual Parity Check Repair parity check repair affected data blocks 86 automatic described 180 described 24 how log it takes 207 manual described 125 see also
116. es only for the controller that is connected to the host machine running the storage management software For example if host 1 has a controller data path failure host 1 reports the failure but host 2 will not report a data path failure using its Health Check or Recovery Guru Also these applications detect drive related failures only for configured drive groups LUNs that are owned by the controller connected to the host machine running the storage management software or for any unassigned or hot spare Spare Stdby drive Special Network Considerations The Networked version of the RAID Manager software always sees both controllers in a dual controller RAID Module regardless of which configuration you have However the Networked version will be able to tell if the RAID Module it is connected to has an independent controller configuration if independent controllers was selected using the Select Module option If you are using the Networked version of this software the following restrictions apply to any of the host RAID Module configurations a Your RAID Modules do not have RDAC failover protection unless there is SCSI based failover protection installed on the host connected to the modules through the SCSI Bus m This software does not provide SCSI related data path failure detection or recovery However any problems with a network connection to the controllers or a problem with the controllers themselves are shown as a data path fa
117. escription RAID Module Affected Component Affected Logical Unit The specific RAID Module affected The specific component where the event problem occurred The specific LUN where the event problem occurred given when applicable Chapter 4 Using the Status Application 101 102 TABLE 4 9 Health Check Show Details Window Elements Continued Window Elements Description RAID Level Logical Unit Status Probable Cause Action To Take Exception Index lower right portion of window The RAID Level of the affected LUN given when applicable Possible RAID Levels are 0 1 3 and 5 The operating condition of the affected LUN given when applicable For an explanation of possible statuses and any recommended action to take see TABLE 5 3 When available information about what has occurred and why The steps you should take to correct the problem and restore the module to an Optimal status The number of exceptions you highlighted in the summary information window before clicking Show Details Use to track how many exceptions you have to view For example if the index reads 1 of 4 then you are viewing the first of four messages that you selected in the summary information window Important When recommended in Action To Take you should use Recovery Guru in the Recovery Application to correct the problem before more serious errors occur or you could lose data RAID Manager 6 1 User s G
118. ew log file including the full path name See To Change Log Settings in Chapter 4 Using the Status Application Change the display temporarily to view a selected log file Choose Open Log from the File menu and select the file name you want to view see FIGURE 4 3 This log continues to display until you open another log file or exit the Status Application When should I run parity check repair You may want to run a manual parity check repair if you notice parity error reports in the Status Application s Message Log If you want early warning that there might be data problems running the automatic parity check repair check provides such notice Action Use the Maintenance Tuning Application to enable the Automatic Parity Check Repair to run at a specific time every day See Changing Automatic Parity Check Repair Settings on page 180 Can I upgrade controller firmware to only one controller in a RAID Module Yes However remember that both controllers in a redundant pair must have the same version of controller firmware installed Therefore it is strongly recommended to select both controllers to ensure they have compatible versions of firmware unless you are replacing a failed controller that has a different firmware version than the original pair was using Caution In most cases you will need to download a new NVSRAM file before upgrading controller firmware especially if you are upgrading from one major fi
119. following Recovery Guru s instructions to replace this second failed drive as you did for the first When you return to the main Recovery Guru window the Fixed column now shows YES for both Drive Failure entries and neither entry is highlighted Click Recovery Guru again to verify that RAID Module 1 is now Optimal The display shows Optimal in the failure column The Fix option is dimmed and you cannot highlight the module for any action Your module is again operating in a normal condition Chapter 5 Using the Recovery Application 117 118 Checking for Component Failures Using Recovery Guru Recovery When to Use Use this option to check selected RAID Modules for component failures and then recover from them by following step by step instructions Select Recovery Guru when An alarm sounds on your module You see fault lights on any module component Health Check Status Application indicates you should Message Log gt Show Details Status Application indicates you should You see a non optimal status reported for any module component Caution Always select Recovery Guru before attempting any manual recovery procedure Incorrectly performing a procedure or performing the wrong procedure could cause equipment damage or data loss Recovery Guru takes you through every step and necessary check to make sure that you are correcting the right problem What Happens The software analyzes the selected RAID
120. formation highlight one or more messages then click Show Details TABLE 4 9 describes the information that is displayed Note You can view more detailed information only when Health Check detects exceptions Show Details and Edit Select All are dimmed for modules with an Optimal status To copy detailed message information choose Copy To Clipboard from the Edit menu This automatically highlights the message s text and copies it to a clipboard Caution Before copying additional messages or exiting this program use an appropriate application to save the clipboard contents into an editor or desired file Caution For any result other than Optimal you should click Show Details and view the Action To Take When recommended use Recovery Guru in the Recovery Application to correct the problem before more serious errors occur or you could lose data Chapter 4 Using the Status Application 99 100 Caution If a series of drive failures and or unresponsive drives are reported at the same time the condition may be caused by a channel failure See the description for Channel Failure in this table before attempting any recovery procedures TABLE 4 8 RAID Module Health Status Results Result Module s Health Status Description Channel Failure Data Path Failure Drive Failure Drive Tray Fan Failure Drive Tray Fan Failures Drive Tray Pwr Supp Failure Drive Tray Pwr Su
121. g to the same controller because LUNs are assigned on a drive group basis Chapter 6 Using the Maintenance Tuning Application 159 160 Changing Controller Mode Controller Mode When to Use Use this option to change the controllers modes for selected RAID Module s You can change an active passive controller pair to active active to improve your I O performance or you can swap an active passive controller pair to passive active To quickly view the controller modes for all your RAID Modules without making any changes you can select All RAID Modules then Controller Mode Caution If you do not have RDAC protection you must stop I Os to the RAID Module before changing a controller s mode Otherwise you could hang the system What Happens The software displays the controllers and mode for the selected RAID Module s See FIGURE 6 5 for a window similar to the one you see when you select Controller Mode TABLE 6 5 describes the window elements Before You Begin Select one of the following procedures for RAID Modules with redundant controller pairs m If you want to change an active passive controller pair to active active see page 162 m If you want to swap an active passive controller pair to passive active see page 164 RAID Manager 6 1 User s Guide October 1997 Maintenance and Tuning qualab133 File Options Help Module Information RAID Module l All RAID Modules Selec
122. ght the LUN s drive group you want to revive Note In the case of a Dead LUN you see all the LUNs for the affected drive group on a single line Thus highlighting that line selects all those LUNs and this revive procedure affects every LUN for the drive group Caution Selecting the Revive option may corrupt data on every LUN in the drive group Therefore you could lose all data in the drive group and would need to use a backup copy to restore data after the revive is completed Click Revive then OK One of two information boxes appear a Reviving the LUN was successful Click OK The LUN list shows updated status information a An error occurred while attempting to perform this procedure Try the procedure again Note When revive successfully completes you should manually check parity on the LUNs that the revived drive group s contained Chapter 5 Using the Recovery Application 139 gt gt Performing Manual Recovery for Controller Pairs When to Use Use this option to view controller status information for selected RAID Modules and to manually perform recovery steps for controllers In most cases however you should click Recovery Guru and follow the step by step instructions provided there Caution Do not use these options unless specifically directed by Recovery Guru or a Customer Service Representative Doing so could result in the loss of data Caution Do not attem
123. hat the controller writes on a single drive in a LUN before writing data on the next drive Write Cache Indicates whether the write caching option has been enabled for a particular LUN Cache Mirroring Indicates whether the write cache mirroring option has been enabled for a particular LUN Cache Without Batteries Indicates whether the cache without batteries option has been enabled for a particular LUN Status Indicates the operating condition of the LUN For an explanation of possible LUN statuses and any recommended action to follow see TABLE 5 3 Note You might see an asterisk next to the caching parameters column This indicates that the parameter is enabled but is currently not active The controller has disabled the parameter for some reason such as low batteries If you see this condition use Message Log Status Application to determine the correct action to take Chapter 2 Features Common to All Applications 41 42 Saving Module Profile Information When to Use Use this option for any of the following reasons a When you want a copy for quick reference a If you want a permanent record m To send information to your Customer Services Representative for troubleshooting Caution It is very important that you save the profile of each RAID Module during initial installation and anytime you change your configuration You can use this information if you need to perform
124. he controller that owns that drive group I cannot select some options Cause Some options are grayed out or are unavailable because e The selected RAID Module does not support that option e The option cannot be performed for the item you selected e The option is not active until you select some item e The option is no longer applicable because a maximum has been reached Action Recheck your selection and try again For more specific information see the Procedures section in this User s Guide that describes the particular option or consult Online Help Why Are Some Options Grayed Out Selection Is Not A File message Cause You might see this message in any application when you are saving a module profile or in the Status Application where you could also be opening a log file or saving the log as another file This message indicates that the file name you entered is not valid Action Try again using another file name Also be sure that you are entering the file name on the Selection line and not the Filter line Threshold Level Reached message Cause The default log file storing messages has exceeded the specified log size threshold value Action Go to the Status Application and perform one of the following Change the default log file so that future events are written to this new log Click Options from the top menu then Log Settings Increase the log size threshold value so that the log is
125. he module s status in the Failure column does not update until you re select Recovery Guru If you are using Manual Recovery or some other application exit then re select the application where you are checking the status Chapter 7 Common Questions and Troubleshooting 205 206 Recovery Guru TABLE 7 11 Troubleshooting for Recovery Guru Software detects a failure even after I replaced a fan or power supply recover from a Module Component Failure Cause The software continues to report the condition as a failure for approximately 10 minutes after replacing a fan or power supply due to the controller s poll interval Action Wait for the controller to poll the module default is 10 minutes after performing this recovery procedure before re selecting Recovery Guru Optimal Health Check Not Done message Cause This could occur if all the logical units are busy because some RAID Manager operation has them locked under exclusive access For example if you had no LUNs configured on your RAID Module and are currently creating the first LUN you could see this result if you select Recovery Guru for that RAID Module before the LUN s format is complete Action Select a different RAID Module or wait for the operation that has exclusive access to complete before performing another operation on the same RAID Module Unresponsive Drive or Multiple Unresponsive Drives message Cause The controller was un
126. hecked 1 RAID Modules FIGURE 4 5 Main Health Check Window TABLE 4 7 Main Health Check Window Elements Health Status Description RAID Module Identifies the specific RAID Module checked A RAID Module may be listed more than once when it has multiple failures For example if RAID Module 1 has both a failed drive and a failed fan two entries appear for this module Drive Failure on one line and Module Component Failure on another line Also you see two Drive Failure entries on separate lines when failed drives exist on more than one drive group 98 RAID Manager 6 1 User s Guide October 1997 gt gt TABLE 4 7 Main Health Check Window Elements Continued Health Status Description Results Indicates the operating condition of the specific RAID Module See TABLE 4 8 for a list and description of possible results Show Details Displays more detailed information for the exceptions you select in the summary information window Select All Selects all the non optimal exceptions in the summary information window To Perform a Health Check Ensure that the RAID Module you want is selected For instructions on how to select a RAID Module see Selecting a Module on page 33 Click Health Check The Health Check Status window is displayed FIGURE 4 5 Checking displays until the check is completed TABLE 4 8 describes the results this check could display To view more detailed in
127. hose LUNs and you are formatting every LUN in the drive group Caution Choosing the Format option in Step 3 destroys all data on every LUN in the drive group Therefore you lose all data in the drive group and must use a backup copy to restore data after the format completes Click Format then OK You return to the LUNs list which shows updated LUN status information The LUNs have a status of Formatting then Optimal when the format completes Reviving a LUN When to Use Use this option only when instructed to by Recovery Guru such as to revive LUNs when you have replaced a failed drive channel 138 RAID Manager 6 1 User s Guide October 1997 Caution Do not use Manual Recovery unless specifically directed to by Recovery Guru or a Customer Services Representative Doing so could result in the loss of data To Revive a LUN This option is dimmed if you select All RAID Modules Caution Do not attempt to manually revive a LUN without understanding the nature of the Dead status Use this procedure only when a drive channel has failed causing all of the drives on that same drive channel to fail Because of this is it best to use Recovery Guru Ensure that the RAID Module you want is selected If you need instructions for selecting a RAID Module see page 33 before proceeding Click Options gt Manual Recovery gt Logical Units The Recovery Window is displayed FIGURE 5 5 Highli
128. ication The mirrored pair drives are indicated by a number appearing in front of the drive location information For example 1 appears in front of the first drive in the first mirrored pair 2 appears in front of the first drive in the second mirrored pair and so on RAID 3 Redundant RAID Level where data and parity are striped across a drive group One drive s worth is for redundancy all other drives are available for storing user data Best used for high I O mode Any two drive failure in the same drive group causes data loss RAID 5 Redundant RAID Level where data and parity are striped across a drive group One drive s worth is for redundancy all other drives are available for storing user data Best used for small medium random I Os Any two drive failure in the same drive group causes data loss Reconstruction Reconstruction is the process used to restore a degraded RAID 1 3 or 5 LUN to its original state after you replace a single failed drive During reconstruction the controller recalculates data on the replaced drive by using data and parity from the other drives in the LUN The controller then writes this data to this replaced drive Chapter 2 Features Common to All Applications 23 24 Reconstruction should start automatically when you physically replace a single failed drive in a RAID 1 3 or 5 LUN The drive s fault light comes on momentarily at the beginning of reconstruction but then turns off an
129. ice Name page 24 Cache Memory page 25 SNMP page 25 RDAC page 25 Recovery Guru page 26 17 18 RAID Module A redundant array of inexpensive disks RAID module is a set of drives a set of controllers single active active passive or active active and applicable power supplies and fans You select a RAID Module to perform the various RAID tasks such as configuring obtaining status recovering and so on For example a unit with 5 drive trays 35 disk drives and 2 controllers would be considered one RAID Module FIGURE 2 1 By default RAID Module numbers are assigned in the order in which the system detects them SCSI versions or the order in which you define them Networked versions The default name displayed is derived from the name of the host machine where the RAID Manager software is installed For example you see lt hostname gt _001 lt hostname gt _002 and so on pal N ES on WA AA Ni Sa so A 0000000000000000 00000000000009909 000000000000009000909990 0000000000000000 Sy Xy XAA Ss RAL AS m ri Ss SSS SJ SNAS baa SS SSS oT SS a
130. if you did any of the following a Deleted all of the LUNs in a drive group a Deleted the only LUN in the drive group a Deleted a hot spare drive m There will be additional remaining capacity on the drive group if you deleted some but not all of the LUNs in a drive group Caution Your operating system may require that you reboot your system after making any configuration changes so that the operating system can recognize the new configuration See the RAID Manager Installation and Support Guide for details 74 RAID Manager 6 1 User s Guide October 1997 Note When you delete all LUNs in the drive group the drive group is deleted and returns to the unassigned drive group Now you can create new LUNs from the unassigned drives and specify new parameters RAID Level capacity number of drives and so on gt gt Resetting the Configuration When to Use Use this option only as a last resort if either your configuration is totally inaccessible or you want to start completely over with your configuration Caution Because deleting LUNs causes data loss back up data on all the drive group LUNs in the RAID Module This operation also deletes any file systems mounted on the LUNs Caution You must first stop I Os to the affected RAID Module and ensure no other users are on the system What Happens The selected RAID Module drive groups and their LUNs is reset back to a default config
131. ilure Recovery Guru provides assistance for these problems m This software has no way to recognize any exclusive access operations that may be performed by other software installed on the host machine not even another storage management package This requires you to use caution before starting certain operations that need exclusive access because without it file systems are not detected and multiple operations could be launched without logical units being protected RAID Manager 6 1 User s Guide October 1997 Caution Drive groups LUNs and their data can be lost if more than one destructive operation is launched No other operations should be attempted on the same drive group LUN if one of these operations is still being completed Operations requiring exclusive access to the LUNs include Delete for LUNs and File gt Reset Configuration Configuration fixing Multiple Drive Failures with Recovery Guru and formatting a LUN with Options gt Manual Recovery gt Logical Units Recovery and Firmware Upgrade gt Offline method Maintenance Tuning Chapter 1 Program Application Overview 5 About This Software Before using this software check for a README file on any installation media This file may contain important information that was not available at the time this User s Guide was prepared Application Summary Once you have started the software the application icons are available FIGURE 1 1
132. ine which drive is affected then use this option to fail and replace it Caution Do not use Manual Recovery unless specifically directed by Recovery Guru or a Customer Services Representative Doing so could result in the loss of data To Fail a Drive This option is dimmed if you select All RAID Modules You cannot fail drives that have a status of Replaced or that contain LUNs that are currently Reconstructing or Formatting Caution Failing drives can cause data loss Do not attempt to manually fail a drive without understanding the circumstances of your module s operating condition Because of this it is best to use Recovery Guru Ensure that the RAID Module you want is selected If you need instructions for selecting a RAID Module see page 33 before proceeding 1 Click Options gt Manual Recovery gt Drives The Recovery Window is displayed FIGURE 5 4 2 Highlight the drive you want to fail The Fail option is dimmed if you highlight any drive that has a drive status of Replaced or a LUN status of Formatting or Reconstructing 3 Click Fail then OK An hourglass appears until the fail drive is failed then the drive list shows updated status information 4 Use Recovery Guru to replace the drive RAID Manager 6 1 User s Guide October 1997 Reconstructing a Drive When to Use Normally drive reconstruction begins automatically once you replace a failed drive However if it does no
133. ing e Single click to highlight a single item e Press Shift click to highlight a series of items For example single click to highlight the top item in a list then press Shift click on the last item in the list to highlight all the items in that list e Press Control click to highlight items not in a series For example single click to highlight one item in a list then press Control click on another item to highlight it as well Do this for every item you want to highlight When using a To select an option using the keyboard such as Locate Module keyboard press Alt and the key for the underlined letter that appears on the screen If selecting a task button the associated screen is launched For example Alt L brings up the Locate Module screen If selecting from the top menu items a drop down menu displays the second level menu options that are available To select a second level menu item press the key for the underlined letter in that option For example to select Save Module Profile from the File menu press Alt F then either press S or use the arrow key to highlight Save Module Profile and press Enter Chapter 2 Features Common to All Applications 27 Common Tasks The following tasks are common to each application You should become familiar with these tasks because they apply to each application and will be helpful as you perform the tasks in Chapter 3 through Chapter 6 Starting an Applicatio
134. ing LUNs on One RAID Module window is displayed FIGURE 6 3 Highlight each drive group you want to assign to the other controller in the pair You can highlight items in both lists If you want to view the LUN Assignment for the selected RAID Module without making any changes select Cancel after you are finished viewing Click Move lt lt gt gt The selected drive group LUNs move to the other controller Click Save to actually balance the drive group LUNs save any new settings Balancing LUNs on All RAID Modules When to Use Use this option to view the LUN Assignments for all your RAID Modules at once and to have this software balance the drive group LUNs between active active controller pairs on modules you select RAID Manager 6 1 User s Guide October 1997 What Happens The software displays all the RAID Modules and their controllers showing which ones own specific drive group LUNs Highlighting modules and selecting Balance automatically assigns the LUNs associated with the odd numbered drive groups to one active controller and the LUNs associated with even numbered drive groups to the other active controller for those modules See FIGURE 6 4 for a window similar to the one you see when you select one RAID Module then LUN Balancing TABLE 6 4 describes the window elements Note You can highlight multiple items in a list when using either LUN Balancing or Controller Mode Single click on an item
135. ing capacity page 55 Chapter 3 Using the Configuration Application 51 TABLE 3 41 Main Configuration Window Description Continued Window Element Description Procedures Create Hot Enables you to create hot spare drives if the page 68 Spare controller in the RAID Module you select supports it Delete Enables you to delete individual LUNs all LUNsina_ page 71 drive group or any hot spare drive Status Line Provides information about an option when you move the mouse over the option button For top menu options you must click on the option and hold down the left mouse button 52 List Locate Drives List Locate Drives When to Use Use this option to view a list of the drives in a drive group unassigned hot spare or configured and to flash the activity lights so you can physically locate the drives in the RAID Module One of the best times to use this option is right after you have installed your RAID Module By doing so you can determine the initial LUN drive group configuration and the associated physical drives For best results when you want to locate drives use List Locate when no I O activity is occurring so that you can distinguish the flashing of the activity lights from normal I O activity What Happens A list of drives including their location capacity and status is displayed for the drive group you highlighted in the main Configuration window RAID Manager
136. ingle RAID Module This option is available for any RAID Module with an active active controller pair What Happens The software displays two boxes one for each controller The information in the boxes indicates which LUNs configured for a particular drive group are assigned to each controller configuration you are able to move drive group LUNs from the Inaccessible controller to the active controller However you will not be able to give them back You should not use this procedure unless directed by Recovery Guru or a Customer Service Representative l Caution If the selected RAID Module has an independent controller See FIGURE 6 3 for a window similar to the one you see when you select one RAID Module then LUN Balancing TABLE 6 3 describes the window elements 154 RAID Manager 6 1 User s Guide October 1997 Maintenance and Tuning qualab133 File Options Help Module Information RAID Module qualab133_001 is Seket Locate Module Module Module Profile Logical Unit LUN Balancing PERH Controller A c1t5d0s0 Controller B cOt4d3s0 LUN m gt Reconstruction Rate Drive LUNS Group Drive LUNS Group Group GanacitviMR Group Canaciti MR LUN Move Balancing Caching Parameters Save Cancel Help FIGURE 6 3 Balancing LUNs on One RAID Module Window TABLE 6 3 Balancing LUNs on One RAID Module Window Description Name Descr
137. ion If a LUN shows Waiting to reconstruct you will be able to change its rate when the reconstruction operation begins Note Use the Maintenance Tuning Application to change the rate for all LUNs whether they are reconstructing or not see Changing the LUN Reconstruction Rate on page 150 Recovery Troubleshooting This section provides information to help you determine the probable cause and action to take for common problems you may encounter as you use the Recovery Application and includes the following sections m General Recovery page 204 m Recovery Guru page 206 a Manual Parity Check Repair page 207 m Manual Recovery page 207 Chapter 7 Common Questions and Troubleshooting 203 204 General Recovery TABLE 7 10 Recovery Troubleshooting General Drive status other than Optimal Cause You have a Failed Offline or Replaced drive which is reconstructing or a LUN is being formatted Action For Failed or Offline drives select Recovery Guru and follow the step by step procedures it provides No action is required if the drives are Replaced or the LUN is Reconstructing or Formatting Drive fault light came on after I replaced a failed drive Cause This light may come on momentarily when a drive in a RAID 1 3 or 5 LUN begins reconstruction Action Wait a few minutes for the fault light to go off and the drive activity lights to begin flashing steadily This indicate
138. iption Controller Displays two boxes one for each controller for the selected RAID Module These boxes indicate which drive groups and LUNs are assigned to which controller The controllers are identified by an A or B designation and where applicable a system device name The A and B are relative names to identify the controllers Drive Group Provides the number of the drive group assigned to that controller LUNs Lists all the LUNs that belong to the particular drive group Group Shows the total capacity in megabytes available on the particular drive Capacity MB group This is not the total capacity of the configured LUNs in the drive group unless you configured them to use all of the capacity Chapter 6 Using the Maintenance Tuning Application 155 156 TABLE 6 3 Balancing LUNs on One RAID Module Window Description Continued Name Description Move lt lt gt gt Moves drive groups LUNSs to the opposite controller Button Save Saves the new settings for balancing the LUNs Cancel Returns you to the main Maintenance Tuning Window without changing any LUN assignments To Balance LUNs Between Active Active Controllers LUN Balancing is dimmed if you select a module that has only one controller or an active passive controller pair Ensure that the RAID Module you want is selected If you need instructions for selecting a RAID Module see page 33 before proceeding Select LUN Balancing The Balanc
139. irmware currently installed on the controllers Boot Level Indicates the controller type and release version of controller bootware currently installed on the controllers Fibre Channel Indicates the controller type and release version of driver for fibre Level channel firmware currently installed on the controllers if applicable Compatible Files Versions Selectable Area Displays compatible versions for Firmware Bootware and if applicable Fibre Channel Level Path Updates to show the specific file name for versions you highlight in the selectable area or use to enter the NVSRAM file s path to download Note Once you click OK at the Firmware is about to start prompt you can follow the firmware upgrade progress Watch the histogram for the selected RAID Module It monitors the progress of downloading for each file as a percentage and starts over at 0 for each file If you select All RAID Modules the module number updates as each module begins its download process Select the controllers you want to upgrade if you selected only one RAID Module and the Offline method to begin this procedure and it has a redundant controller pair It is strongly recommend to select both controllers to ensure that they have compatible versions of firmware Depending on whether you are downloading NVSRAM files or upgrading controller firmware do one of the following Chapter 6 Using the Maintenance Tuning Application 175 AN 9
140. ive tray most likely has been shut down Drive Tray The maximum temperature allowed within a disk drive tray has been Temp Exceeded exceeded Caution This is a critical condition that may cause the drive tray to be automatically turned off if you do not resolve this condition within a short time Other Failures Channel Failure Indicates that all the drives on the same drive channel have Failed and or are Unresponsive Depending on how the logical units have been configured across these drives the status of the logical units may be Dead Degraded or Optimal if hot spare drives are in use Chapter5 Using the Recovery Application 123 124 TABLE 5 6 Possible Failure Types Continued Failure Type Probable Cause Data Path Failure Environmental Card Failure Module Component Failure A controller is not receiving I O which indicates some component along the data path has failed For Networked versions this means that the controller is not responding to the RAID Manager software This failure could be the result of a problem with the interface cable terminator controller or the host adapter The correct procedure for recovering from a data path failure varies depending on where the failure occurred For example the correct procedure for recovering from a controller failure depends on how many and what type of controllers the affected module has Important If you do not have RDAC protection this failu
141. le controller RAID Modules or dual controllers connected by a single SCSI Bus RAID Modules You do not have RDAC protection with either of these configurations Multi host Configuration In this configuration two host machines are each connected by two SCSI Buses to both of the controllers in a RAID Module Refer to the documentation that is shipped with the storage device for more hardware information Caution Not every operating system supports this configuration Be sure to consult the restrictions in the RAID Manager Installation and Support Guide for more information Also the host machines and operating systems must be able to handle the multi host configuration Refer to the appropriate hardware documentation With the RAID Manager software installed on each host machine both hosts have complete visibility of both controllers all data paths and all configured drive groups logical units LUNs in a RAID Module plus RDAC failover support for the redundant controllers However in this configuration use caution when performing storage management tasks especially creation and deletion of LUNs to ensure the two hosts do not send conflicting commands to the controllers in the RAID Modules The following items are unique to this configuration Both hosts must have the same operating system and RAID Manager software versions installed RAID Manager 6 1 User s Guide October 1997 m Both host machines should have the
142. les or if the selected RAID Module has only one controller Caution Do not attempt to manually place a controller online without following the correct procedure especially if you are replacing a failed controller Because of this it is best to use Recovery Guru Make certain that the RAID Module you want is selected If you need instructions for selecting a RAID Module see page 33 before proceeding 1 Click Options gt Manual Recovery gt Controller Pairs The Recovery Window is displayed FIGURE 5 6 2 Highlight the controller you want to place online The Place Online option is dimmed unless there is one controller on the selected RAID Module with an Offline status Also there can be only one controller offline for the selected module 3 Click Place Online then OK 4 Click OK when the controller list updates the controller s status to Optimal 144 RAID Manager 6 1 User s Guide October 1997 CHAPTER 6 Using the Maintenance Tuning Application m Changing the LUN Reconstruction Rate page 150 a Balancing LUNs Between Active Active Controllers page 153 m Changing Controller Mode page 160 m Viewing and Setting Caching Parameters page 166 m Upgrading Controller Firmware page 170 a Changing Automatic Parity Check Repair Settings page 180 145 146 Overview Use Maintenance Tuning after initial installation and after changing your module configuration to accomplish
143. leshooting 211 212 RAID Manager 6 1 User s Guide October 1997 Index A About icon 7 active controllers assigning LUNs drive groups 153 changing to 162 configuration considerations 186 active passive controllers changing to active active 164 swapping modes 164 activity lights drives 36 52 adding RAID Modules 35 adding hot spare drives 68 adding logical units to existing drive groups 55 alarm sounding 118 applications common features 17 common screen elements 29 exiting 30 online help in 30 starting 28 summary of 6 task charts 10 arraymon see command line utilities ASC ASCQ displayed 84 hardware message type 86 Auto Parity Settings main screen 181 what happens 180 when to use 180 available capacity defined 187 displayed 59 B balancing logical units 65 153 blank screen Firmware Upgrade 174 Manual Recovery Drives 208 Logical Units 208 blocks parity 86 board ID controllers 40 board name controllers 40 195 board serial number controllers 40 bootware level displayed 40 175 C cache memory defined 25 size displayed 40 Caching Parameters cache without batteries defined 166 described 168 changing 67 LUN parameter 64 main screen 167 Index 213 settings displayed 41 troubleshooting 210 what happens 166 when to use 166 write cache mirroring defined 166 described 168 write caching defined 166 described 168 see also raidutil capacity
144. letter to quickly advance through the list of topics For example pressing M will take you to the first topic that begins with M You can also use the Home and End keys on your keyboard to move through this list Index Lists key words or phrases in alphabetical order in the top of the Index window The bottom of the window displays the topics in which the highlighted index term appears Press a letter to quickly advance through this alphabetical list For example pressing M will take you to the first word that begins with M You can also use the Home and End keys on your keyboard to move through this list To view one of these topics you can either double click the topic or simply highlight the topic and select Go To Back Goes back one topic at a time through the topics you have viewed since selecting Help History Creates a list of all topics you view in the order you have selected them A new list is created each time you enter Help To return to one of these topics either double click the topic or simply highlight the topic and select Go To You can also use the Home and End keys on your keyboard to move through this list 32 RAID Manager 6 1 User s Guide October 1997 I Se ec Module TABLE 2 3 Main Online Help Window Description Continued Selection Description Glossary Displays an alphabetical list of terms you can select to view a definition Press a letter to q
145. lications 21 Next you create a new drive group The new drive group would use the first available LUN which in this case is 1 The drive groups would be renumbered as follows Drive Group LUN 1 0 2 1 3 2 4 3 4 5 As you can see LUN 1 is now part of drive group 2 The old drive group 2 has been renumbered to 3 and the old drive group 3 has been renumbered to 4 Caution Keep in mind that the drive group numbering can change when you are creating and deleting LUNs 22 RAID Manager 6 1 User s Guide October 1997 RAID Level A RAID Level determines how data is stored on the drives in your RAID Modules The RAID Level indicates the way the controller reads and writes data and parity on the drives The controller can create RAID Level 0 1 3 and 5 LUNs TABLE 2 1 describes these RAID Levels TABLE 2 1 RAID Level Descriptions RAID Level Description RAID 0 Non redundant RAID Level where data without parity is striped across a drive group All drives are available for storing user data Any single drive failure in a drive group causes data loss and a LUN status of Dead RAID 1 Redundant RAID Level where identical copies of data are maintained on drive pairs also known as mirrored pairs Half of the drives are available Also known for storing user data Drive pair failure causes data loss as RAID 0 1 or RAID 0 1 You can view mirrored pairs using List Locate Drives in the Configuration Appl
146. lows write caching to continue even without battery backup or if the batteries are discharged completely or not fully charged Normally write caching is temporarily turned off if no batteries are detected or until the batteries are charged However enabling this parameter overrides the controller s safeguard Therefore if you select Cache Without Batteries without an uninterruptible power supply UPS for protection you could lose data if a power failure occurs Segment Size Enables you to change the segment size for each LUN you create A segment is the amount of data the controller writes on a single drive in a LUN before writing data on the next drive The segment size is composed of blocks one block equals 512 bytes Normally you should use the default segment size shown because the values provided are based on the RAID Level specified for the drive group LUNs RAID Manager 6 1 User s Guide October 1997 TABLE 3 3 Create LUN Options Window Description Continued Option Use LUN Enables you to change which controller owns the new drive group Assignment LUN s you create Important This option is dimmed if there are not two active controllers in the RAID Module if you are creating additional LUNs on an existing drive group or if the module has an independent controller configuration The display shows you which controller owns the current drive groups LUNs Normally you should use the default controlle
147. m I O Note A background check occurs at regular intervals for all RAID Modules results are logged to Message Log the default setting is five minutes You can change the frequency of this check by choosing Options from the Log Settings menu see To Change Log Settings in Chapter 4 Using the Status Application Chapter 7 Common Questions and Troubleshooting 201 202 TABLE 7 8 Troubleshooting for Health Check Optimal Health Check Not Done message Cause This could occur if all the logical units are busy because some RAID Manager operation has them locked under exclusive access For example if you had no LUNs configured on your RAID Module and are currently creating the first LUN you could see this result if you run Health Check on that RAID Module before the LUN s format is complete Action Select a different RAID Module or wait for the operation that has exclusive access to complete before performing another operation on the same RAID Module Unresponsive Drive or Multiple Unresponsive Drives message Cause The controller was unable to communicate with one or more drives that are part of a drive group containing logical units In this case the software marks the drive status as Unresponsive If the drive receives I O the controller will fail it Important If a series of drive failures and or unresponsive drives are reported at the same time the condition may be caused by a channel failure See Chapter
148. m the top menu bar Balancins Caching Parameters FIGURE 6 1 Main Maintenance Tuning Window Chapter 6 Using the Maintenance Tuning Application 147 148 TABLE 6 1 Main Maintenance Tuning Window Elements Window Element Description Procedure File Gives you two options Save Module Profile Saves profile information toa page 42 file for a selected RAID Module Exit Quits Maintenance Tuning page 30 Options Auto Parity Settings Allows you to enable or page 180 disable automatic parity check repair or change the daily time at which it starts Help Gives you access to Online Help topics for all page 30 applications RAID Module Enables you to select a specific RAID Module or All page 33 Selection Box RAID Modules before selecting the option you want to perform Select Module Allows you to select or find a specific RAID Module page 33 add or remove RAID Modules or edit the information module name controller information independent controllers and comments about a RAID module Locate Module Flashes the activity lights on the drive canisters in the page 36 selected RAID Module to identify the module s location Module Profile Provides information about the controllers drives page 37 and LUNs for the selected RAID Module LUN Enables you to change the reconstruction rate for page 150 Reconstruction LUNs on a RAID Module whether or not they are Rate undergoing reconstruction LUN Balancing Enables
149. manually revive a LUN See the procedure on page 138 Note If there are no configured LUNs for the selected RAID Module that is all drives are unassigned the window would appear blank There is no LUN drive group RAID Level or LUN status to report Formatting a LUN When to Use Use this option to manually reformat a Dead LUN after you have replaced all the failed drives in the drive group Caution Do not use Manual Recovery unless specifically directed by Recovery Guru or a Customer Services Representative Doing so could result in the loss of data Chapter 5 Using the Recovery Application 137 To Format a LUN This option is not available dimmed if you select All RAID Modules Caution Do not attempt to manually format a LUN without first correcting any failures The correct procedure varies depending on the RAID Level of the affected LUN and the number of drives in one drive group that have failed Because of this it is best to use Recovery Guru Ensure that the RAID Module you want is selected If you need instructions for selecting a RAID Module see page 33 before proceeding Click Options gt Manual Recovery gt Logical Units The Recovery Window is displayed FIGURE 5 5 Highlight the LUN s drive group you want to format Caution In the case of a Dead LUN you see all the LUNs for the affected drive group on a single line Thus highlighting that line selects all t
150. me to perform the daily array parity check and so on The applications read this file on startup or at select times during their execution A subset of the parameters in rmparams are changeable under the graphical interface rmscript The notification script A program that is called by the array monitor and other programs whenever an important event is reported The file has certain standard actions including posting the event to the message log rmlog log sending e mail to the superuser administrator and in some cases sending an SNMP trap Although you can edit rmscript make certain that you do not disturb any of the standard actions Chapter 1 Program Application Overview 15 16 RAID Manager 6 1 User s Guide October 1997 CHAPTER 2 Features Common to All Applications This chapter contains concepts navigational functions and procedures common to each application in this User s Guide Common Definitions and Explanations page 17 Common Navigating Features page 27 Common Tasks page 28 Common Definitions and Explanations The information in this section is common across all of the applications You should become familiar with the terms definitions and concepts provided in this section RAID Module page 18 Drive Groups page 19 Logical Unit page 19 Hot Spare Drive page 20 Drive Group Numberings page 21 RAID Level page 23 Reconstructions page 23 Parity page 24 Dev
151. n Common Window Elements Exiting an Application Using Online Help Selecting a Module Locating a Module Viewing a Module Profile Saving Module Profile Information Starting an Application To start an application From the application icons FIGURE 2 3 double click the appropriate icon for the program application you want to start RAID Manager qualab133 GERN G Configuration Status Recovery Maintenance About Tunina FIGURE 2 3 Application Icons 28 RAID Manager 6 1 User s Guide October 1997 Common Window Elements When an application is first started the top portion of the window FIGURE 2 4 has the following common elements a application you open a RAID Module selection list see page 33 m Select Module see page 33 a Locate Module see page 36 a Module Profile see page 37 m Status Line A text box that provides information about each option as you move the mouse over the option button For top menu options you must click on the option and hold down the left mouse button Locate Module RAID Module selection v Status qualal133 Top Menu Options file Edit Options Help jodule Information oe RAID Module AI RAD Modules 2 sra oe Module Rica aie Message Log Summary Information RAID g Das Module Message Log 08 01 1997 qualab133_001 ss 08 01 1997 qualab133_001 08 01 1997 qualab133_001 08 01 1997 qualab133_001 Task buttons v 07 31 1997 qualab133_001 chek 07 31 1
152. n copy back is completed on the new replacement drive Depending on how many hot spares you configure a LUN could remain Optimal and still have several Failed drives each one being covered by a hot spare 20 RAID Manager 6 1 User s Guide October 1997 A hot spare drive is not dedicated to a specific drive group but instead can be used for any failed drive in the RAID Module with the same or smaller capacity Each RAID Module can support as many hot spare drives as there are SCS Channels probably either 2 or 5 depending on the model of your RAID Module You can determine the status of the hot spares by highlighting the hot spare drive group in the main Configuration window and selecting List Locate Drives or by selecting Module Profile gt Drives Drive Group Numbering The numbering of drive groups is based on the specific LUN numbers associated with each drive group Drive group numbering starts with the lowest numbered LUN For example the drive group containing LUN 0 would always be drive group 1 When you delete LUNs and then add new LUNs the drive group numbers can change to reflect the new LUN numbers associated with it For example suppose you had the following drive groups Drive Group LUN 1 0 1 2 2 3 3 4 5 Now you delete LUN 1 In this case renumbering would not occur The drive groups would be as follows Drive Group LUN 1 0 2 2 3 3 4 5 Chapter 2 Features Common to All App
153. n Configuration window displays the following m Anew hot spare drive group displays if there was not an existing hot spare drive group a The Drives column increases to add the new hot spare if there was an existing hot spare drive group v To Create a Hot Spare Drive The Create Hot Spare option is dimmed if you do not highlight the unassigned drive group You can only create new or additional hot spares from the unassigned drive group 1 Ensure that the RAID Module you want is selected For instructions on how to select a RAID Module see Selecting a Module on page 33 before proceeding Caution Hot spares cannot cover for a drive with a larger capacity that is a 2 GB hot spare drive cannot stand in for a 4 GB failed drive If your unassigned drive group contains drives with different capacities then the Configuration Application selects the first available drive which may not be the largest capacity Therefore before you create a hot spare drive use List Locate Drives to record the capacities and location of the larger capacity drives in the unassigned drive group to ensure the hot spare can cover for any failed drive in the RAID Module 2 Highlight the unassigned drive group 3 Click Create Hot Spare The Create window is displayed 4 Select the number of hot spare drives you want to create The numbers provided in the list are based on the maximum number of hot spares allowed and the number of hot sp
154. n and status Action Select another module or use the Configuration Application to create LUNs using those unassigned drives No LUN information appears in the Manual Recovery Logical Units window Cause There are no configured LUNs for the selected RAID Module that is all the drives are unassigned There is no LUN drive group RAID Level or LUN status to report Action Select another module or use the Configuration Application to create LUNs using those unassigned drives Reconstruction takes a long time Cause The amount of time that reconstruction takes depends on the number and size of the LUNs that are reconstructing and the rate setting for the reconstruction operation Important Increasing the reconstruction rate may impact the performance of other applications running on the same drive group Action Use the Status Application or the Maintenance Tuning Application to change the reconstruction rate to better optimize reconstruction Component status doesn t update after a Manual Recovery procedure has been performed Cause A configuration change may not be detected yet For example a drive is failed then replaced and its status becomes Replaced but does not return to Optimal after reconstruction completes Action Try selecting a different RAID Module then switching back and re selecting Manual Recovery or exit then re select the Recovery application RAID Manager 6 1 U
155. n recreate it using Create LUN TABLE 3 3 describes each LUN parameter What Happens When you make changes to LUN parameters remember that certain changes destroy your data TABLE 3 4 indicates each LUN parameter whether changing it destroys data and what application or option you use to change it Note Your operating system may have special requirements or considerations if you create or delete LUNs groups Therefore be sure to consult the RAID Manager Installation and Support Guide before changing LUN parameters that require using Delete or Create LUN RAID Manager 6 1 User s Guide October 1997 TABLE 3 4 Changing LUN Parameters Will My Data Be Destroyed If change Answer Action RAID Level or Number of Drives Yes you will lose data on all LUNs in the drive group 1 From the top menu select File gt Save Module Profile to save all of the Module Profile information for the RAID Module you want to change You can use this information as a reference when you are creating new LUNs 2 Back up the data on all the LUNs you want to delete 3 Use Delete to delete all of the LUNs in the drive group This also deletes the drive group and the drives are returned to the unassigned drive group 4 Use Create LUN to recreate the new drive group LUNs from the unassigned drive group Segment Size or Individual LUN Capacity Yes you will lose data only on the LUN you are changing 1
156. ng configured drive group highlight an existing drive group from the Drive Group area that has remaining capacity Click Create LUN The Create LUN window is displayed FIGURE 3 3 TABLE 3 2 describes the window and default settings you might see Note The time it takes to create a LUN depends on the capacity of the LUN you specified the larger the capacity the more time it takes The creation of the LUN occurs in the background so you can perform other tasks except on the LUNs Drive Group that is currently formatting RAID Manager 6 1 User s Guide October 1997 Create LUN Create Logical Units on New Drive Group RAID Level RAID Description gt RAID O RAID 5 HIGH I O MODE create Data and parity striped across a drive group PABA One drive s worth for redundancy all other RAID 3 drives available for user data Good for small medium random I Os Any two drive failure in same group causes Available Group Capacity MB 12279 Number of Drives EEIE Number of LUNs 1 F Cancel RAIDS Options Instruction If you cannot select a RAID level the number of drives shown is not valid for that RAID level RAID O will be the default if you select less than 3 drives If you select Create without making any changes in Options then equal sized logical units LUNs will be created using default values such as drive selection specified in Options CAUTION If yo
157. ns it provides before attempting any manual recovery procedure Before you begin you should be familiar with Chapter 2 These common concepts navigational functions and procedures are the same in Recovery as they are in the other applications A task summary chart of the Recovery Application is shown in FIGURE 1 5 Step by step procedures for each task in Recovery begin on page 118 v To Start the Recovery Application Double click the Recovery icon The main Recovery window is displayed FIGURE 5 1 TABLE 5 1 describes the window elements 108 RAID Manager 6 1 User s Guide October 1997 Recovery qualab133 File Options Help Module Information RAID Module SE URSI ma Please select either 1 One of the push buttons 2 One of the options from the top menu bar Manual Parity Gheck Repair FIGURE 5 1 Main Recovery Window Chapter 5 Using the Recovery Application 109 TABLE 5 1 Main Recovery Window Elements Window Element Description Procedures File Options Help RAID Module Selection Box Select Module Locate Module Module Profile Gives you two options Save Module Profile Saves profile information to a file for a selected RAID Module Exit Quits Recovery Manual Recovery gives you three options Drives Provides options for manually performing specific drive recovery operations such as fail reconstruct and revive
158. ntroller e Active No LUNs owned e None Passive controller only active controllers can have LUNs assigned to them e Inaccessible indicates the RAID Module has an independent controller configuration may own LUNs Balance Automatically balances the LUNs in the selected RAID Module To Balance LUNs on All RAID Modules Select All RAID Modules Select LUN Balancing The Balance LUNs on All RAID Modules window is displayed FIGURE 6 4 If a controller does not have any LUNs assigned to it a reason is shown See TABLE 6 4 Highlight the modules with active active controllers for which you want to balance the LUNs Note You cannot highlight a RAID Module that has an independent controller configuration RAID Manager 6 1 User s Guide October 1997 4 Click Balance A confirmation box displays a message that the LUNs are about to be balanced for the selected RAID Modules 5 Click OK to proceed Then the LUN Balancing list updates to show the new LUN Assignments for each module you highlighted The odd numbered drive groups are assigned to one active controller and the even numbered drive groups are assigned to the other controller Caution If it appears that no balancing occurred verify that the LUNs for the selected module are not all in the same drive group For example assume that RAID Module 1 has only three LUNs but they are all in the same drive group Those LUNs always belon
159. nts and results of parity check repair Health Check Perform an immediate health check on a specific RAID Module or all RAID Modules and view the results LUN Reconstruction View the status of any LUNs currently reconstructing and if desired change the rate of reconstruction for those LUNs page 82 page 97 page 103 Recovery Recovery Guru Perform an immediate check of selected RAID Module s and obtain step by step procedures for recovering from component failures in the RAID Module Manual Parity Check Repair Start an immediate parity check repair on selected LUNs Options gt Manual Recovery Perform various recovery options manually on drives fail reconstruct and revive LUNs format and revive and controller pairs place offline and online page 118 page 125 page 129 Maintenance Tuning LUN Reconstruction Rate Change the rate of reconstruction for any LUN in the selected RAID Module LUN Balancing Transfer LUN ownership between active active controllers on a drive group basis Controller Mode Change controller pairs from active passive to active active or from active passive to passive active Caching Parameters Change the caching parameters for individual LUNs Firmware Upgrade Perform an upgrade of controller firmware online or offline and or NVSRAM files Options gt Auto Parity Settings Enable disable the automatic Parity Check Re
160. o add the new hot spare if there was an existing hot spare drive group Note Once you create a hot spare you can determine its status In Use or Standby by highlighting the hot spare drive group in the main Configuration window and selecting List Locate Drives Depending on how many hot spares you have configured for a module a logical unit s status could remain Optimal and still have several failed drives each one being covered by a hot spare RAID Manager 6 1 User s Guide October 1997 gt gt be P Deleting Drive Groups LUNs or Hot Spare Drives Delete When to Use You can use this option to delete all the LUNs in a drive group individual LUNs within a drive group or Standby hot spare drives if supported Caution Before deleting any LUNs see the RAID Manager Installation and Support Guide and Chapter 7 to see if there are restrictions or troubleshooting information for special requirements such as deleting partitions or unmounting file systems Caution Deleting all LUNs in a drive group causes the loss of all data on each LUN in that drive group Deleting one LUN in the drive group for example to change segment size or capacity causes data loss on only that one LUN Caution Because deleting LUNs causes data loss back up data on all the LUNs in any drive group you are deleting This operation also deletes any file systems mounted on the LUNs Caution You mus
161. o perform page 33 Select Module Allows you to select or find a specific RAID Module add or remove RAID Modules or edit the information module name controller information independent controllers and comments about a RAID module page 33 Locate Module Flashes the activity lights on the drive canisters in the selected RAID Module to identify the module s location page 36 Module Profile Provides information about the controllers drives and LUNs for the selected RAID Module page 37 RAID Manager 6 1 User s Guide October 1997 TABLE 3 1 Main Configuration Window Description Continued Window Element Description Procedures Drive Groups Area Lists and identifies drive groups in the RAID Module you selected You perform all configuration tasks ona RAID Module and its associated drive groups Group Identifies the type of drive group There are three types of drive groups e Unassigned drives that have not been configured into LUNs or hot spares e Hot spare drives that have been assigned as hot spares e Configured drives designated with a number such as 1 2 3 and so on that have one or more LUNs lwith the same RAID Level As you highlight a drive group in the list on the left side of the window the corresponding LUNs are highlighted in the LUN Information area on the right side of the window You can only highlight one drive group at
162. ocess so that it can recognize the new LUNs including adding drives and possibly rebooting your system See the RAID Manager Installation and Support Guide and Chapter 7 in addition to the appropriate system documentation for specific details 76 RAID Manager 6 1 User s Guide October 1997 CHAPTER 4 Using the Status Application m Using Message Log page 82 m Performing a Health Check for RAID Modules page 97 m Viewing LUN Reconstruction Progress and Changing the Reconstruction Rate page 103 77 78 Overview Before you begin you should be familiar with Chapter 2 These common concepts navigational functions and procedures are the same in Status as they are in the other applications A task summary chart of the Status Application is shown in FIGURE 1 4 Step by step procedures for each task in Status begin on page 82 To Start the Status Application Double click the Status icon The main Status window is displayed FIGURE 4 1 TABLE 4 1 describes the primary elements of that window Note The default window for the Status Application shows All RAID Modules selected and Message Log Summary Information RAID Manager 6 1 User s Guide October 1997 Status qualab133 File Edit Options Help Module Information RAID amp Date Module Type Code Controller 08 01 1997 4 56 53 qualab133_001 Hardware 3FC c1t5d0s0 08 01 1997 796 qualab133_001 Hardware c1t5d0s0
163. on Consider changing the reconstruction rate to better optimize reconstruction Use LUN Reconstruction to change the rate setting while reconstruction is occurring Chapter 7 Common Questions and Troubleshooting 209 210 Caching Parameters TABLE 7 16 Troubleshooting for Caching Parameters Can t select Write Cache Mirroring This caching parameter is only available if the module has a redundant controller pair Important This parameter is only effective for modules with redundant controller pairs that have the same size cache Use Module Profile gt Controllers to determine if both controllers in the pair have the same cache size before enabling this parameter If they do not write cache mirroring will not occur even though you appear to enable the option Firmware Upgrade TABLE 7 17 Troubleshooting for Upgrading Controller Firmware Upgrading firmware takes a long time The firmware upgrade process takes approximately 2 minutes per module to upgrade two controllers Therefore if you select All RAID Modules and you have 8 modules the upgrade process takes approximately 16 minutes Controller hangs up during a firmware upgrade Cause This should not happen unless you try to perform some other activity on the module while upgrading controller firmware If you are upgrading firmware to a redundant controller pair the progress bar reaches 50 very quickly after downloading a file to the first controller
164. or Component Failures Using Recovery Guru on page 118 If a failure is indicated fix it and try to upgrade the firmware again If Recovery Guru does not indicate a failure try to upgrade the firmware again Do not try to load this firmware version again Use Module Profile and view Controller Details to check your controller type and model and obtain the correct firmware version file s Use Module Profile and view Controller Details to determine how many controllers the module has If there is only one controller try to upgrade the firmware again and be sure to select Offline If you have two controllers use the Status application to select Health Check and follow the recommended Action To Take to fix the controller problem before attempting to upgrade the firmware again see Performing a Health Check for RAID Modules on page 97 Use the Status Application to select Message Log for component information see Using Message Log on page 82 Copy the NVSRAM files to some directory other than the default installation subdirectory and try again OR Download the NVSRAM files to one RAID Module at a time and select OK at the no compatible files found message to continue the download process Chapter 6 Using the Maintenance Tuning Application 179 180 Changing Automatic Parity Check Repair Settings When to Use Use this option to enable disable the auto parity check repair or to change its start
165. ort a Has an independent controller configuration a Does not work on a module that has any LUN with a status other than Optimal The Offline option a Does not work unless you have stopped I O to the selected RAID Module because you cannot perform the Offline upgrade until you stop the I O This option is useful if several of your modules have only one controller you may want to upgrade firmware on only one RAID Module at a time so that you do not have to stop all I O a This option also requires exclusive access to the logical units in the selected RAID Modules that is no other operations can be running on the RAID Module See Chapter 1 for details on LUNs with file systems To Upgrade Controller Firmware Ensure you have copied the firmware files to the default subdirectory in the installation directory Ensure that the RAID Module you want is selected If you need instructions for selecting a RAID Module see page 33 before proceeding RAID Manager 6 1 User s Guide October 1997 Note When you select Firmware Upgrade another window overlays the main display area without changing any information in the display area In this additional window you may click Cancel any time to exit without changing any module settings or executing any operation Select Firmware Upgrade A window displays for you to select the online or offline procedure Read the Before You Begin Important notes and select
166. ou are notified about problems events as soon as possible to the time that they occur What Happens A background monitor checks all RAID Modules for problems events at the frequency set here default is 5 minutes If any problems or events are detected the information is written to the default log file Thus the log entry shows the date and time that the background monitor detected the problem event and not necessarily the time the event occurred Chapter 4 Using the Status Application 93 94 To Change Log Settings The Log Settings option is selectable no matter what window is displayed or what RAID Module is selected Choose Log Settings from the Options menu The Log Settings window is displayed FIGURE 4 4 TABLE 4 6 describes the window parameters Note Changing any parameters in Log Settings applies to all RAID Modules even if you have only one RAID Module selected Use TABLE 4 6 to change any of the three Message Log parameters Click Save Note If you exit Message Log it automatically updates when you re select it Note When you select Options Refresh All Message Log again shows all message types Note The size of the log file can affect the time it takes for refresh to update the window Note You cannot disable the Threshold Level Reached notification but you can set the log size before notification to the maximum value 1000K to reduce the frequ
167. overy see Recovery Guru H hardware message type details 86 Health Check copying exception details 99 main screen 98 not performed 202 Index 217 procedures 99 results see Failure type troubleshooting 201 unresponsive drives 202 206 what happens 97 when to use 97 see also command line utilities healthck see command line utilities Help menu see online help highlighting items in a list 27 hot spare creating 68 defined 20 deleting 71 drive capacity considerations 68 drive failure 101 122 drive group displayed 49 in use 204 logical unit status and 114 204 troubleshooting 205 I O path see data path L lad see command line utilities List Type procedures 87 when to use 87 see also Message Log List Locate Drives procedures 53 what happens 52 when to use 52 Locate Module doesn t work 195 troubleshooting 195 what happens 36 when to use 36 218 RAID Manager 6 1 User s Guide October 1997 log file changing display 88 189 default 93 default not found 200 is corrupted message 88 opening 88 saving 90 viewing 85 Log Settings changing 92 main screen 95 when to use 92 log size threshold changing 96 described 93 logical block address parity message details 86 logical unit defined 19 illustrated 20 logical unit capacity changing 67 displayed 41 51 less than expected 196 see also available capacity see also remaining capacity see also to
168. overy procedures What Happens This option displays a list of LUNs for the selected RAID Module s and enables you to run parity check repair on one or more LUNs with Optimal statuses Once you start the parity check repair operation a histogram shows the percentage of progress for each selected LUN See FIGURE 5 3 for a window similar to the one you see when you click Manual Parity Check Repair TABLE 5 7 describes the window elements What Parity Check Repair Does When you highlight LUNs and click Start Parity Check Repair the selected LUNs are scanned for parity inconsistencies This operation only applies to selected LUNs with an Optimal status When the parity operation is finished you see whether inconsistencies were found and repaired for each LUN Chapter 5 Using the Recovery Application 125 Caution RAID 0 does not have parity and therefore cannot be checked and repaired Additionally you cannot run parity check repair on RAID 1 3 or 5 LUNs with a status other than Optimal Parity check repair fixes parity not data If the parity inconsistencies resulted from corrupted data the data is still corrupted but the parity is correct Parity inconsistencies might indicate corrupt data You may be able to use your operating system to verify your data See Parity on page 24 for a general description of parity You can also use Message Log in the Status Application to view more detailed information about the affec
169. ow remaining capacity of 1000 Mbyte from the deleted LUN 1 Action It is best to use all the remaining available capacity when creating new drive group LUNs However if you do not and this condition occurs use Create LUN to add LUN s to the drive group using all the remaining capacity that shows Then you can add more LUNs with the new remaining capacity from the deleted LUN Chapter 7 Common Questions and Troubleshooting 197 198 TABLE 7 6 Configuration Troubleshooting Continued Format process fails before a LUN is created Once you click Create during the LUN Creation process the main Configuration window displays Formatting until the operation is complete However if this format operation fails Configuration displays a message that the LUN was not created and a message is written to Message Log in the Status Application Most likely the LUN creation failed because a drive or some module component has failed If you see this message you should use the Status Application to select Health Check and follow the recommended Action To Take in the detailed information window List Locate Drives Locate doesn t work Cause It is not possible to flash the drive activity lights for a particular drive group if any of the drives has a status other than Optimal Action Use Module Profile to verify that all drives are Optimal and try again If any of the drives are not Optimal select Recovery Guru in the R
170. ox sur l interface d utilisation graphique Xerox cette licence couvrant galement les licenci s de Sun qui mettent en place l interface d utilisation graphique OPEN LOOK et qui en outre se conforment aux licences crites de Sun CETTE PUBLICATION EST FOURNIE EN L ETAT ET AUCUNE GARANTIE EXPRESSE OU IMPLICITE N EST ACCORDEE Y COMPRIS DES GARANTIES CONCERNANT LA VALEUR MARCHANDE L APTITUDE DE LA PUBLICATION A REPONDRE A UNE UTILISATION PARTICULIERE OU LE FAIT QU ELLE NE SOIT PAS CONTREFAISANTE DE PRODUIT DE TIERS CE DENI DE GARANTIE NE S APPLIQUERAIT PAS DANS LA MESURE OU IL SERAIT TENU JURIDIQUEMENT NUL ET NON AVENU amp cs Adobe PostScript Contents Program Application Overview 1 Types of Host RAID Module Configurations Supported 1 Single Host Configuration 2 Multi host Configuration 2 Independent Controller Configuration 3 Special Network Considerations 4 About This Software 6 Application Summary 6 Task Summary Charts 10 Features Common to All Applications 17 Common Definitions and Explanations 17 RAID Module 18 Drive Group 19 Logical Unit 19 Hot Spare Drive 20 Drive Group Numbering 21 RAID Level 23 Reconstruction 23 Contents iii iv Parity 24 Device Name 24 Cache Memory 25 SNMP 25 RDAC 25 Recovery Guru 26 Common Navigating Features 27 Common Tasks 28 Starting an Application 28 Common Window Elements 29 Exiting an Application 30 Using Online Help 30 Selecting a Module 33 Locating a Module
171. pair function and set the time at which you want the check to occur each day page 150 page 153 page 160 page 166 page 170 page 180 Chapter 1 Program Application Overview 9 Task Summary Charts FIGURE 1 3 through FIGURE 1 6 contain charts showing the tasks in each program application Use these charts as a quick reference to review the options you can use to perform the tasks Save Module Profile File Reset Configuration Exit m Help RAID Module Selection Box t Select Module S s s Locate A Module Configuration Applicati _ pp ication m Controllers Module Drives Profile LUN L LUNs Capacity Drive Selection List Locate Drives Caching Parameters m Create s t IL CreateLUN vegmen Options Size LUN Creat m Create Assignment Hot Spare L Options Drive Selection Delete FIGURE 1 3 Configuration Task Summary Chart 10 RAID Manager 6 1 User s Guide October 1997 Status Application File Edit Options L Help RAID Module Selection Box t Select Module Locate Module Module Profile Message Log Health Check LUN Reconstruction FIGURE 1 4 Status Task Summary Chart Open Log Save Log As Save Module Profile Exit Copy To Clipboard Select All Refresh All m
172. pboard using 85 99 using with Help 32 Create Hot Spare procedures 69 what happens 68 when to use 68 Create LUN main screen 57 Options screen display 61 procedures 56 what happens 55 when to use 55 creating hot spare drives 68 logical units drive groups 55 format fail 198 how long it takes 188 D DARDAC see RDAC data path failure 100 124 date code drives 41 date of manufacture controllers 40 drives 41 dead controller status 115 logical unit status 114 default log file changing 96 described 93 definitions common 17 degraded mode 114 Delete procedures 72 what happens 72 when to use 71 deleting drive groups LUNs or hot spares 71 detailed messages copying 85 99 device name defined 24 download status displayed 177 see also Firmware Upgrade Index 215 drive capacity displayed 40 incorrect 117 drive failure fixing with Recovery Guru example 115 procedures 121 hot spare 101 122 multiple 101 122 multiple unresponsive 101 122 single 100 122 unresponsive drive 101 122 drive group capacity 155 defined 19 deleting 71 displayed 49 existing adding LUNs 55 changing LUN assignment 67 illustrated 20 number of LUNs in 49 when they renumber 21 drive selection LUN parameter 63 drive status displayed 40 131 non optimal 204 unresponsive 113 122 202 206 Drive tray fan failure 100 123 power supply failure 100 123 temperatu
173. pecific application Fortunately it is still possible to obtain help by selecting Help from another application Click on the Help menu at the top of the window The Help window is displayed FIGURE 2 5 TABLE 2 3 details the features common to each application s online Help RAID Manager 6 1 User s Guide October 1997 fz Status Help HOME PAGE a Common Features For All Applications Using Online Help Task Summary Main Screen Description Select Module Locate Module Module Profile Troubleshooting Common Questions Types Of Host RAID Module Configurations Supported Specific Application Details Configuration Application Status Application Recovery Application Maintenance Tuning Application FIGURE 2 5 Main Online Help Window Chapter 2 Features Common to All Applications 31 TABLE 2 3 Main Online Help Window Description Selection Description File Enables you to e Print the currently displayed topic to a file or to a printer e Set up your printer landscape portrait margins and so on e Exit Online Help Edit Copies text to a clipboard From the top menu choose Edit gt Copy to Clipboard to copy the topic in the window you are viewing Home Returns you to the Home Page This window displays whenever you select Help from the top menu in an application Contents Displays all the help topics organized by hierarchy and appearance on the Home Page Press a
174. played for each of the three message types 5 Click OK The summary information window displays the specific message types for the selected RAID Module Chapter 4 Using the Status Application 87 88 Opening an Existing Log File When to Use Use this top menu option to view a selected log file other than the default log file which displays automatically each time you select Message Log Note Opening another log file does not change the default log that the software writes messages to It changes only the log that Message Log displays until you select another log file using Open Log or you exit the Status Application To change the default log file see Changing Log Settings on page 92 To Open an Existing Log File If you are not in Message Log this option is not available Choose Open Log from the File menu The Open Log window is displayed FIGURE 4 3 TABLE 4 4 describes the window elements Enter or select the file name for the log you want to view in the Selection box You can use Filter to direct your selection to a specific directory file name and file extension Click OK Message Log displays the log file you selected This file continues to display until you open another log or you exit the Status Application Caution If you see the Log file is corrupted message it could mean that either the file is bad or you have not selected an appropriate log file Try selecting anoth
175. pp Failures Indicates that all the drives on the same drive channel have Failed and or are Unresponsive Depending on how the logical units have been configured across these drives the status of the logical units may be Dead Degraded or Optimal if hot spare drives are in use Some component along the data path has failed For example the host adapter cable or controller could have failed Important If you do not have RDAC protection this failure type may not be displayed for every condition Therefore verify that the interface cable terminator or network card is not removed or damaged before proceeding with any controller related recovery procedure A single drive has failed in a drive group A fan in one of the disk drive trays has failed The remaining fan should be able to maintain an acceptable operating temperature for a short period of time Indicates both fans in one of the disk drive trays have failed Caution This is a critical condition that may cause the drive tray to reach unsafe operating temperatures A power supply in one of the disk drive trays has failed The remaining power supply should be able to maintain sufficient power to the drives however operating in this condition for a long period of time is not recommended Both power supplies in one of the disk drive trays has failed Caution This is a critical condition that requires immediate action RAID Manager 6 1 User s Guide October 1997
176. pt to manually recover from controller failures without understanding the circumstances of the controller failure Also do not attempt to replace a controller without following the proper hardware documentation Because of this it is best to use Recovery Guru Note You can quickly find controller status information using Module Profile gt Controller details too See TABLE 5 4 for possible controller statuses and action to take What Happens Status information displays for the controllers on the selected RAID Module Also you have options for manually placing a controller offline or online See FIGURE 5 6 for a window similar to the one you see when you click Options from the top menu then Manual Recovery gt Controller Pairs TABLE 5 10 describes the window elements 140 RAID Manager 6 1 User s Guide October 1997 Recovery qualab133 File Options Help Module Information RAID Module Manual Recovery Controller Pairs Controller Status A citSd Optimal B cOt4d3s0 Optimal ga Manual Parity Check Repair Place Offline FIGURE 5 6 Main Manual Recovery Controller Pairs Window Chapter 5 Using the Recovery Application 141 142 TABLE 5 10 Main Manual Recovery Controller Pairs Window Description Window Element Description Controller Identifies one controller per line for the selected RAID Module by an A or B designation and where appli
177. r active controllers are not assigned to the same SCSI bus To Swap Active Passive Controllers Controller Mode is dimmed if you select RAID Modules with only one controller or an active active controller pair Ensure that the RAID Module you want is selected If you need instructions for selecting a RAID Module see page 33 before proceeding Select Controller Mode The Main Controller Mode window is displayed FIGURE 6 5 Highlight the active passive controller pair s you want to swap Click Swap Active Passive The window displays one of two possible confirmation boxes a The controller mode is about to change for the selected RAID Module s RAID Manager 6 1 User s Guide October 1997 a The selected RAID Module is receiving I O You might see this message if the driver for redundant controller support is not installed Click OK You return to the main Maintenance Tuning window Stop all I O to this module then start this procedure again 4 Click OK a If successful the list updates to show the new controller mode of the selected RAID Module s a If a problem occurs you receive notification Chapter 6 Using the Maintenance Tuning Application 165 166 Viewing and Setting Caching Parameters Caching Parameters When to Use Use this option to view or modify three caching parameters for LUNs on a selected RAID Module a Write Caching Enables write operations from the host to be store
178. r selected under the Assign New Group LUNs To Controller area The only reason to change the default is to be sure that a particular controller owns a specific drive group LUNs The capacity shown is the total capacity available on the drive group It is not the total capacity of the LUNs configured on the drive group unless the LUNs have used all of the capacity Unless you use this option the logical units are balanced across active controller pairs on a drive group basis The odd numbered drive groups are assigned to one active controller and the even numbered drive groups are assigned to the other active controller Use the Maintenance Tuning Application LUN Balancing if you want to change any LUN ownership between controllers after creating the LUNs Note If you create or add new LUNs and have two active controllers the software automatically balances LUNs between the two controllers However you can control the LUN assignment During LUN creation in Configuration use Create LUN gt Options gt LUN Assignment After LUN creation use Maintenance Tuning LUN Balancing Chapter 3 Using the Configuration Application 65 66 Changing LUN Parameters When to Use Use the information in TABLE 3 4 to determine which option to use to change the various parameters RAID Level segment size caching and so on of the LUNs after LUNs are created Most of the changes require that you delete the LUN using Delete and the
179. ranteed to work as intended described in the RAID Manager Installation and Support Guide this User s Guide or the online help if other configurations are used Note The Networked version of the RAID Manager software always sees both controllers in a dual controller RAID Module regardless of the configurations mentioned in this section However the Networked version under the Select Module option will be able to tell if the RAID Module is in an independent controller configuration Each drive group LUN number is owned by only one of the active controllers in a RAID Module Furthermore the combined total of LUNs configured for both controllers cannot exceed the maximum number of LUNs that the module can 2 handle that is 8 16 or 32 regardless of which configuration is used For information on LUN limits per module refer to the RAID Manager Installation and Support Guide Single Host Configuration In this configuration one host machine is connected by two SCSI Buses to each controller in a RAID Module The two SCSI Buses are required for maximum RDAC failover support for redundant controllers Refer to the documentation that is shipped with the storage device for more hardware information Note This the recommended configuration with the RAID Manager software installed on the host for fullest functionality and complete RDAC failover support with dual controllers However this configuration also supports sing
180. re exceeded 101 123 drives activity lights 36 Failed status 112 failing manually 132 fault light on 204 firmware version 41 hot spare 68 list locate 52 location displayed 40 53 131 manual recovery 129 Mismatch status 113 number for drive group displayed 50 number for module displayed 39 number of drives for drive group 216 RAID Manager 6 1 User s Guide October 1997 unexpected 196 Optimal status 112 reconstructing manually 133 Replaced status 113 reviving manually 134 selecting for hot spares 70 selecting number for configuration 59 serial number displayed 41 unresponsive 198 drvutil see command line utilities dual controllers see active controllers E Edit menu online help 32 Status 80 85 99 environmental card failure 101 124 error messages see messages error window printing online help 194 exclusive access defined 185 exiting 30 F failed drive status 112 failing a drive manually procedures 132 when to use 132 Failure type channel failure 123 data path failure 100 124 drive failure 100 122 drive tray fan failure 100 123 power supply failure 100 123 temperature exceeded 101 123 environmental card 101 124 format fail 198 hot spare failure 101 122 module component failure 101 124 multiple drive failure 101 122 multiple unresponsive drives 101 122 possible in Recovery Guru 122 recovering from 26 111 unresponsive drive
181. re type may not be displayed for every condition Therefore verify that the interface cable terminator or network card is not removed or damaged before proceeding with any controller related recovery procedure An environmental card in one of the disk drive trays has failed Caution You may see a series of disk drive failures or a channel failure reported as well You must service the environmental card first using Recovery Guru This recovery procedure will instruct you on how to fix the corresponding drive or channel failures therefore you should not use Recovery Guru for the associated drive or channel failure entries Either single or multiple fans or power supplies have failed Important When recovering from a Module Component Failure wait for the controller to poll the module default is ten minutes before re selecting Recovery Guru Otherwise this condition may continue to be reported as a failure RAID Manager 6 1 User s Guide October 1997 Manually Checking and Repairing Parity ll o o Manual Parity Check Repair When to Use Use this option to manually check and repair parity on selected LUNs Note Because an automatic parity check repair is performed daily if enabled checking parity manually is necessary only when some recovery procedure has been performed that could result in parity inconsistencies For example you may be instructed to check parity after performing most Manual Rec
182. re will continue trying to contact the controllers in that module This is especially important in the networked environment because missing modules could cause the software to have long delays or even system hangs while trying to contact the removed module e If you are operating on a system with SCSI connections and want to remove a RAID Module be sure you have physically removed it from the system first Otherwise the module will be added again when this software detects it on the SCSI Bus Edit Allows you to add or change information module name and comments about a RAID Module that has already been defined You can only edit information for one module at a time and this option will be dimmed if All RAID Modules is selected Use the comments area to provide detailed information about the RAID Module to help you identify it such as location information independent controllers and so on Chapter 2 Features Common to All Applications 35 Locating a Module LC When to Use Locate Module Use this option to physically locate and identify a RAID Module if you have several RAID modules connected to your system For best results use Locate Module when no I O activity is occurring on the selected module so that the flashing of the activity lights can be distinguished from normal I O activity What Happens The activity lights on the drive canisters flash sequentially one at a time until you select Stop Some RAID modules
183. reen This is the quickest selection method if you have only a few modules and are familiar with the module names that will appear in the list 34 RAID Manager 6 1 User s Guide October 1997 m Choose Select Module for a more detailed list of all RAID Modules Highlight the module you want and select OK This module is now selected in the RAID Module Selection box If you re select the RAID Module that is currently displayed in the list box you are returned to the main screen Additionally the component statuses have been updated at this time TABLE 2 4 Select Module Main Window Description Window Element Description Find Allows you to quickly locate a RAID Module It will probably be most useful when you have many modules At the pop up screen enter the search term you want to use Remember that the search item must be contained in one of the fields on this screen Add Applicable for the Networked version only Allows you to add new modules to your system so that this software can access and monitor it See the RAID Manager Installation and Support Guide for details on adding new modules to your system through a SCSI connection Remove Allows you to remove RAID Modules from your system You can only remove one module at a time This option will be dimmed if All RAID Modules is selected Important e If you physically remove RAID Modules from your system but do not use this Remove option the softwa
184. rite Cache Mirroring is dimmed Write Cache Mirroring is only effective for modules with redundant controller pairs that have the same size cache Use Module Profile gt Controllers to determine if both controllers in the pair have the same cache size before enabling this parameter Chapter 6 Using the Maintenance Tuning Application 169 Upgrading Controller Firmware Et Hil Firmware Upgrade When to Use Use Firmware Upgrade to upgrade controller firmware for one or all RAID Modules The upgrade can be done either online or offline Caution Controller firmware is different from the drive firmware Use this option only to upgrade controller firmware when you receive new firmware upgrade files If you need to upgrade drive firmware call your Customer Services Representative What Happens Enables you to choose whether you want to perform the upgrade online while I Os continue or offline when I Os are stopped and presents a series of information selection windows to perform the upgrade procedure Before You Begin Installing Controller Firmware Files When you receive new firmware upgrade files copy them to your host system before attempting to perform the upgrade procedure This software automatically searches a default subdirectory in the installation directory With any new controller firmware upgrade you should receive one to three firmware files and the fwcompat def file 170 RAID Manager 6 1 User
185. rmware release to another If you do not certain features of this software or the controller may not work 1 Select one RAID Module that has a pair of redundant controllers 2 Select Firmware Upgrade gt Offline method Remember that you must stop I Os to the selected RAID Module when using the Offline method 3 Select the controller on which you want to upgrade firmware remember both controllers are highlighted by default 4 Highlight the version level you want to download and select OK Chapter 7 Common Questions and Troubleshooting 189 190 Troubleshooting The troubleshooting tables that follow provide probable cause and action to take for common problems you may have as you use this software The first section includes general topics that you might encounter using any of the applications The sections that follow are organized by application in the same order that they appear in this User s Guide Note If you cannot find the problem you are looking for consult the RAID Manager Installation and Support Guide That guide s common questions are specific to operating this software with the Solaris operating system environment Common Troubleshooting All Applications page 190 Configuration Troubleshooting page 196 a Status Troubleshooting page 199 m Recovery Troubleshooting page 203 a Maintenance Tuning Troubleshooting page 209 Common Troubleshooting All Applications
186. roller Mode to quickly view the controller modes for all your RAID Modules Ensure that the RAID Module you want is selected If you need instructions for selecting a RAID Module see page 33 before proceeding Select Controller Mode The Main Controller Mode window is displayed FIGURE 6 5 RAID Manager 6 1 User s Guide October 1997 2 Highlight the active passive controller pair s you want to make active active 3 Click Change To Active Active You see a confirmation box similar to FIGURE 6 6 The option to automatically balance the LUNs across the newly active active controllers is selected by default unless the RAID Module has independent controllers In the latter case the original active controller continues to own all the LUNs Controller Mode Confirm Controller Mode Change J The controller mode is about to be changed to active active Once the change is made you cannot go back to active passive mode OK to proceed Balance LUNs across active active controllers Cancel FIGURE 6 6 Change to Active Active Confirmation Box 4 Do one of the following Leave the automatic LUN Balancing option selected if you want the LUNs for the selected module s to automatically balance the LUNs associated with the odd numbered drive groups are assigned to one active controller and the LUNs associated with the even numbered drive groups are assigned to the other active controller For maximum performan
187. roubleshooting 203 what happens 103 when to use 103 LUN Reconstruction Rate main screen 151 troubleshooting 209 what happens 150 when to use 150 Maintenance Tuning Application Auto Parity Settings 180 Caching Parameters 166 Controller Mode 160 File menu 148 Firmware Upgrade 170 210 LUN Balancing 153 LUN Reconstruction Rate 150 main screen 146 Options menu 148 options summary 9 overview 146 task summary chart 13 troubleshooting Caching Parameters 210 general 209 LUN Reconstruction Rate 209 Manual Parity Check Repair main screen 126 procedures 127 terminated message 207 troubleshooting 207 what happens 125 when to use 125 Manual Recovery Controller Pairs main screen 141 Place Offline when to use 142 Place Online procedures 144 when to use 143 what happens 140 Index 219 when to use 140 Drives blank screen 208 Fail procedures 132 when to use 132 main screen 130 Reconstruct procedures 133 when to use 133 Revive procedures 134 when to use 134 what happens 129 when to use 129 Logical Units blank screen 208 Format procedures 138 when to use 137 main screen 136 Revive procedures 139 when to use 138 what happens 135 when to use 135 troubleshooting 207 memory see cache memory menu items selecting 27 Message Log changing log display 189 changing log settings 92 copying message details 85 default log file not found 200 delay in
188. roup However if you delete an individual LUN in the drive group for example to change segment size or capacity of that LUN only that one LUN loses data Caution Because deleting LUNs causes data loss back up data on all the LUNs in any drive group you are deleting This operation also deletes any file systems mounted on the LUNs Caution You must first stop I Os to the affected RAID Module and ensure no other users are on the system Back up the data on all the LUNs for every drive group you want to delete Highlight the drive group containing the LUN s or hot spare drive s you want to delete Note You cannot highlight more than one drive group at the same time Click Delete A list of LUNs or hot spare drives is displayed Chapter 3 Using the Configuration Application 73 AN Delete Delete Logical Units Logical Units Logical RAID Capacity Unit Level IMBI 5 16372 P FIGURE 3 5 Delete LUN Main Window Highlight the LUN s or hot spare drive s you want to delete and click Delete again Click OK at the Confirm Delete window The confirmation screen asks if you want to delete the selected LUNs and warns that you will lose all data on those LUNs Select Cancel if you do not wish to delete the LUNs After deletion one of the following will be displayed in the Drive Groups area of the main Configuration window m The drive s will return to an unassigned state
189. s Continued Window Element Description Parity Message Details Affected Logical The specific LUN where the parity problem occurred Unit Block Begin The code for the initial data block on the affected LUN Block End The code for the final data block on the affected LUN Note The Block Begin and End numbers provide a range that identifies the logical address where the parity inconsistencies were found and repaired Number Of The total number of blocks on the LUN where parity inconsistencies Bad Blocks were found and repaired Repaired Important Parity check repair fixes parity not data If the parity inconsistencies resulted from corrupted data the data is still corrupted but the parity is correct Therefore parity inconsistencies might indicate corrupt data You may be able to use your operating system to verify your data General Message Details Description Information about what event or problem may have occurred Hardware Message Details ASC ASQ ASC ASCQ Code for the event problem that occurred ASC is a SCSI Additional Sense Code and an ASCQ is an ASC Qualifier ASC ASCQ codes are sent by the controller to provide further information about the event problem that occurred Affected Component where the event problem occurred when applicable Component Affected Logical Logical unit where the event problem occurred given when applicable Unit Probable Cause When available information about why this event problem
190. s that reconstruction is occurring The drive s status changes to Replaced and the LUN s status changes to Reconstructing However if the fault remains on select Recovery Guru and follow the step by step procedures it provides Logical unit status other than Optimal Cause You have a Failed drive or a Replaced drive which is reconstructing a logical unit is being formatted or the LUN is Inaccessible because it is owned by the other controller possible if the RAID Module has an independent controller configuration Action For Dead or Degraded LUNs select Recovery Guru and follow the step by step procedures it provides for restoring the LUNs Failed Drive status appears but LUN status is still Optimal Cause A drive on the LUN has failed and a hot spare has taken over for it Note To see if a hot spare is being used use List Locate Drives in the Configuration Application The hot spare s drive status is either In Use or Standby not being used Action Select Recovery Guru and follow the step by step procedures it provides for replacing the failed drive LUN status changed to Reconstructing but no drives have been replaced A hot spare has taken over for a failed drive and the data is being reconstructed on it This LUN s status returns to Optimal as soon as reconstruction completes RAID Manager 6 1 User s Guide October 1997 TABLE 7 10 Recovery Troubleshooting General LUN status
191. same LUNs per host adapter capacity that is either both are limited to eight LUNs or both can have 16 32 LUNs This is important for RDAC failover situations so that each controller can take over for the other and display all configured drive groups LUNs m If the operating system on the host machine is capable of creating reservations the software will honor them This means that each host could have reservations to specified drive groups logical units LUNs and only that host s software can perform operations on the reserved drive group LUN Without reservations the software on either host machine is able to begin any operation Therefore you must use caution when performing certain tasks that need exclusive access especially creation and deletion of LUNs to ensure the two hosts do not send conflicting commands to the controllers in the RAID Modules m This software does not provide failover protection at the host level That feature requires third party software Independent Controller Configuration In this configuration two host machines are connected to a dual controller RAID Module One host machine is connected by a SCSI Bus to one controller and a second host machine is connected by another SCSI Bus to the other controller Refer to the documentation that is shipped with the storage device for more hardware information Each host machine and its software see the controller and the drive groups LUNs that it owns as independen
192. se you replaced the wrong drive accidentally The LUN is not available because it is part of a drive group LUN owned by the alternate controller in an independent controller RAID Module It cannot be accessed using this software from the current host The LUN is not available because an operation has obtained exclusive access to it such as LUN creation Action to Take No action required No action required No action required You can still access your data however use Recovery Guru to replace the failed drive as soon as possible see page 118 Use Recovery Guru and follow the step by step instructions provided see page 118 If you need to perform an operation on this drive group LUN you need to use the software on the host machine connected to the controller that owns that drive group No action required 114 RAID Manager 6 1 User s Guide October 1997 Note Depending on how many hot spares you have configured a LUN could remain Optimal and still have several Failed drives each one being covered by a hot spare TABLE 5 4 Possible Controller Status Controller Status Indication Action to Take Optimal The controller is operating normally No action required Offline The controller is not receiving I O data If you did not Either it has been manually placed offline or manually place the the driver for redundant software support controller offline it has placed it offline if
193. se your operating system to verify your data Device Name The software uses the device name as an address to access controllers in a RAID Module These addresses are determined by the location of the RAID Module hardware and can vary according to the operating system you are using For example most UNIX operating systems use a cXtXdXsX scheme Refer to the RAID Manager Installation and Support Guide for details RAID Manager 6 1 User s Guide October 1997 Cache Memory Cache memory is an area on the controller used for intermediate storage of read and write data By using cache you can increase overall performance because the data for a read operation from the host may already be in the cache from a previous operation thus the need to access the drive itself is eliminated or the write operation is considered completed once it is written to the cache When you create a LUN you can specify various caching parameters for the LUNs If you need to change any caching parameters after LUN creation use the Maintenance Tuning Application Caching Parameters Note You can also use the raidutil command line utility for setting these and other more advanced caching parameters SNMP The Simple Network Management Protocol SNMP notification is an option that you may enable when installing this software It allows this software to send remote notification of RAID events to a designated network management station NMS using
194. ser s Guide October 1997 Maintenance Tuning Troubleshooting This section provides information to help you determine the probable cause and action to take for common problems you may encounter as you use the Maintenance Tuning Application and includes the following sections a General Maintenance Tuning page 209 m LUN Reconstruction Rate page 209 m Caching Parameters page 210 m Firmware Upgrade page 210 General Maintenance Tuning TABLE 7 14 Troubleshooting for General Maintenance Tuning No Controller given for mode in either LUN Balancing or Controller Mode Cause With All RAID Modules selected this message usually means that the indicated RAID Module has only one controller However it could also indicate that the controller is no longer detected which could mean that there is a bad connection interface cable terminator network card or host adapter or that the controller is offline Action Verify how many controllers the module has using Module Profile If the module has two controllers select Recovery Guru and follow the instructions provided to restore the module to Optimal status LUN Reconstruction Rate TABLE 7 15 Troubleshooting for LUN Reconstruction Rate Reconstruction takes a long time Cause The amount of time that reconstruction takes depends on the number and size of the LUNs that may be reconstructing and on the rate setting for the reconstruction operation Acti
195. size of the LUNs you have selected and the number of parity errors it finds and corrects For example parity check repair for a 1 Gbyte LUN takes approximately two minutes When you start the manual parity operation you may notice some performance slow down for other applications you are running Action Run manual parity on a few LUNs at a time or when there is no heavy I O occurring on the selected RAID Module Manual Recovery TABLE 7 13 Troubleshooting for Manual Recovery Manual parity check repair terminated message Cause Remember that the LUNs must be Optimal in order to perform this check This message indicates that the parity check repair operation has been aborted This most likely will occur if the affected LUN has changed to a status other than Optimal Action Select Recovery Guru for the RAID Module and follow the Fix procedure for any component problems detected After the problem is corrected you may want to run the Manual Parity Check Repair operation again Chapter 7 Common Questions and Troubleshooting 207 208 TABLE 7 13 Troubleshooting for Manual Recovery Continued Information is missing in the Manual Recovery Drives window Cause The drives for the selected RAID Module are unassigned that is they are not part of a configured drive group For these drives there is no LUN RAID Level or LUN status to report However you should still see information for the drives locatio
196. sk Summary Chart Chapter 1 Program Application Overview 13 TABLE 1 2 Files With Information About Command Line Utilities And Programs Option Description Information symsm Overviews the software s graphical user interface GUI command line programs background process programs and driver modules and customizable elements rdac Describes the software s support for rdac Redundant Disk Array Controller including details on any applicable drivers and daemons rmevent The RAID Event File Format This is the file format used by the applications to dispatch an event to the rmscript notification script It also is the format for Message Log s log file the default is rmlog 1log raidcode txt A text file containing information about the various RAID events and error codes Command Line Programs drivutil The drive LUN utility This program helps manage drives LUNs It allows you to obtain drive LUN information revive a LUN fail unfail a drive and obtain LUN reconstruction progress fwutil The controller firmware download utility This program downloads appware bootware fibre channel code or an NVSRAM file to a specified controller healthck The health check utility This program performs a health check on the indicated RAID module s and displays a report to standard output lad The list array devices utility This program identifies what RAID controllers and logical units are
197. ssages in the summary information window or highlights the text of a detailed message when you are in either Message Log or Health Check Gives you two options Refresh All Updates Message Log to show any new messages for all message types the default setting when you are in Message Log Log Settings Changes the default settings for three Message Log parameters default log file log size threshold and checking interval Gives you access to Online Help topics for all applications Enables you to select a specific RAID Module or All RAID Modules before selecting the option you want to perform Allows you to select or find a specific RAID Module add or remove RAID Modules or edit the information module name controller information independent controllers and comments about a RAID module Flashes the activity lights on the drive canisters in the selected RAID Module to identify the module s location page 88 page 90 page 42 page 30 page 85 page 91 page 92 page 30 page 33 page 33 page 36 80 RAID Manager 6 1 User s Guide October 1997 TABLE 4 1 Main Status Window Description Continued Window Element Description Procedures Module Profile Message Log Health Check LUN Reconstruction Status Line Provides information about the controllers drives page 37 and LUNs for the selected RAID Module Displays historical messages for RAID Module events pag
198. t Module Controller Mode RAID Module Controller A Controller B qualab133_001 LUN Balancing Gontoller iode FIGURE 6 5 Main Controller Mode Window Chapter 6 Using the Maintenance Tuning Application 161 162 TABLE 6 5 Main Controller Mode Window Description Name Description RAID Module Identifies the specific RAID Module Controller A B Identifies the mode for Controller A B for each RAID Module in the list The column heading includes where applicable a system device name A and B are relative names to identify the controllers Possible controller modes are Active Passive Offline or No Controller You could also see Inaccessible with these statuses if the RAID Module has an independent controller configuration Change To Changes active passive controller pairs to active active Active Active See procedures on page 162 Swap Active Changes active passive controller pairs to passive active Passive See procedures on page 164 Changing To Active Active Controllers When to Use Use this option to change the controller modes for selected RAID Module s Changing an active passive controller pair to active active improves your I O performance To Change to Active Active Controllers Controller Mode is dimmed if you select RAID Modules with only one controller or an active active controller pair Note You can however select All RAID Modules then Cont
199. t begin automatically you may want to use this option For more general information about the reconstruction process see Reconstruction on page 23 Caution Do not use Manual Recovery unless specifically directed by Recovery Guru or a Customer Services Representative Doing so could result in the loss of data To Reconstruct a Drive This option is dimmed if you select All RAID Modules or if the LUN status is Reconstructing or Formatting You can only reconstruct drives with Failed or Replaced drive statuses in a RAID Level 1 3 or 5 LUN Caution Do not attempt to manually begin reconstruction on a drive without following the correct procedure Because drive reconstruction normally begins when you replace a failed drive it is best to use Recovery Guru Ensure that the RAID Module you want is selected If you need instructions for selecting a RAID Module see page 33 before proceeding Click Options gt Manual Recovery gt Drives The Recovery Window is displayed FIGURE 5 4 Highlight the drive you want to reconstruct The Reconstruct option is dimmed if you highlight any drive that either contains a RAID Level 0 LUN or has a drive status other than Failed or Replaced Click Reconstruct then OK The drive status changes to Replaced and the LUN status changes to Reconstructing until reconstruction is complete Note You can view reconstruction progress using the Status Application LUN R
200. t first stop I Os to the affected RAID Module and ensure no other users are on the system You delete al LUNs or the only LUN in a drive group if you want to m Change the RAID Level or number of drives of that drive group You delete the LUNs and then use Create LUN to recreate them m Free up capacity Chapter 3 Using the Configuration Application 71 72 You delete individual LUNs in a drive group if you want to m Change the segment size or capacity of an individual LUN You delete the individual LUN and then use Create LUN to recreate them m Free up capacity You delete a standby hot spare drive if you want to return it to an unassigned status and make it available for LUN creation Delete is dimmed for either of the following reasons m You selected an unassigned drive group You cannot delete an unassigned drive group m You selected a hot spare drive group and all of the hot spares are currently being used You cannot delete a hot spare drive that is being used because doing so would delete the data contained on it and would cause the LUN to have a Degraded or Dead status What Happens After selecting Delete a list of LUNs displays for the drive group you highlighted You can select any or all of these LUNs to delete Once you have deleted LUNs or hot spare drives the Drive Groups area of the main Configuration window displays one of the following a The drives return to the unassigned drive group if you did any
201. t guide s common questions are specific to operating this software with the Solaris operating system environment Common Questions page 184 a Troubleshooting page 190 183 184 Common Questions This section contains answers to some frequently asked questions about using the RAID Manager software TABLE 7 1 Frequently Asked Questions Common Questions All Applications How can I check for component failures on RAID Modules Use either Health Check in the Status Application or Recovery Guru in the Recovery Application to perform an immediate check of the selected RAID Module s If you have component failures Recovery Guru provides step by step instructions for fixing the failure If you want to check for past failures on your module s go to the Status Application and use Message Log What does the Detected a change updating the information on screen message mean An application is performing an operation such as creating or deleting LUNs changing controller modes etc that results in a status change and the software is updating the status information in the application you are viewing or just started Can I restore my configuration with Save Module Profile information No you cannot use this information to automatically restore your module s configuration however saving a Module s Profile copies that data to a file for your reference Using this file you could determine the spe
202. t of the other alternate controller That is each host machine acts as if it is connected to a single controller RAID Module Also with Independent Controller selected as part of RAID Module information in Select Module the storage management software has knowledge of the alternate controller and displays all configured drive groups LUNs It only reports real time statuses for the host controller data path on which it is installed but displays and reports an Inaccessible status for drive groups LUNs owned by the alternate controller The following items are unique to this configuration Both hosts must have the same operating system and the same RAID Manager software versions installed Both host machines should have the same LUNs per host adapter capacity that is either both are limited to eight LUNs or both can have 16 32 LUNs This is important for failed controller situations so that each controller can take over and display all configured drive groups LUNSs for the alternate controller a A special setting is required in Select Module the Indep Cntrls column says Yes a The controllers in the RAID Module do not have RDAC failover protection Chapter 1 Program Application Overview 3 4 a The RAID Manager software reports the alternate controller and its drive group LUNs as Inaccessible m Health Check Status Application and Recovery Guru Recovery Application detect data path related failur
203. t select 58 described 23 viewing mirrored pair drives 51 RAID 3 described 23 RAID 5 described 23 RAID Level changing 67 defined 23 displayed for drive group 50 for LUNs 41 selecting for configuration 58 RAID Module adding new 35 balancing LUNs between active active controllers 154 156 changing name information 35 checking interval 93 checking status 97 component failure 101 124 controllers on displayed 41 defined 18 drives on capacity 40 location 40 number of drives displayed 39 status 40 illustrated 18 locating 36 logical units on capacity 41 removing 35 removing from configuration 191 resetting configuration 75 saving profile information 42 selection what happens 34 when to use 33 serial number displayed 39 using Select Module 35 viewing a profile 37 raidcode txt see command line utilities raidutil see command line utilities RDAC defined 25 see also command line utilities rdacutil see command line utilities rdaemon see command line utilities rdriver see command line utilities reconstructing logical unit status 114 reconstructing a drive manually procedures 133 when to use 133 reconstruction defined 23 drive fault light 204 how long it takes 203 208 209 optimizing performance 104 progress described 104 troubleshooting 203 209 reconstruction rate can t change 203 changing 67 150 see also LUN Reconstruction see also LUN Reconstruction Rate recovery
204. t to start prompt you can follow the firmware upgrade progress Watch the histogram for the selected RAID Module It indicates the progress as a percentage of downloading for each file and starts over at 0 for each new file If you have two controllers in a module the progress bar reaches 50 after the file is downloaded to the first controller You may notice the bar pauses at 50 before it reaches 100 while the file is downloaded to the second controller If you select All RAID Modules the module number is updated as each module begins the download process 176 RAID Manager 6 1 User s Guide October 1997 11 12 13 Note If you selected All RAID Modules it is possible that the upgrade was successful for some modules but not for others The final confirmation box should indicate which modules were not successful and give an appropriate cause For more information see Confirming the Firmware Upgrade TABLE 6 9 Firmware Upgrade Conformation Box Window Elements Description Summary Lists the files used to upgrade the firmware Report for Lists the files loaded in the Path line when you selected files at the Files s Compatible Files Versions window FIGURE 6 8 RAID Module Identifies the specific RAID Module Download Indicates whether the download process was completed successfully Status Either you see Successful or Failed with a reason why the upgrade was unsuccessful See TABLE 6 1
205. tal capacity logical unit parameters caching parameters changing 67 described 64 drive selection described 63 LUN Assignment changing 67 described 65 LUN capacity changing 67 described 62 number of drives changing 67 described 59 limitation 196 RAID Level changing 67 described 41 reconstruction rate changing 105 segment size changing 67 described 64 what happens 66 when to change 66 logical unit status 114 displayed 51 102 127 131 137 non optimal 191 204 remains at Reconstructing 205 shows Reconstructing 204 logical units LUNs busy message 185 assigning to a controller all RAID Modules 156 one RAID Module 154 available capacity 59 balancing between active controllers 153 163 configured drive groups 49 controller assignment displayed 41 creating 55 Dead status 114 Degraded status 114 deleting 71 formatting manually Formatting status 114 information display area 51 manual recovery 135 operating system limits 196 Optimal status 114 Reconstructing status 114 reviving manually 138 selecting number for configuration 59 logutil see command line utilities LUN Assignment changing on existing drive groups 67 LUN parameter 65 LUN Balancing all RAID Modules main screen 157 what happens 157 when to use 156 one RAID Module main screen 155 what happens 154 when to use 154 what happens 153 when to use 153 LUN Reconstruction main screen 104 procedures 105 t
206. tasks 28 navigating 27 overview 6 program group icons 6 28 task summary 10 see also command line utilities Solaris rdaemon utility 15 rdriver utility 15 starting applications 28 status controllers displayed 142 drives displayed 40 131 firmware download 177 logical units 51 102 displayed 131 137 non optimal 204 205 Optimal 101 possible for components 112 unexpected 205 208 unresponsive 113 122 202 206 viewing event details 82 Status Application delay in displaying 199 Edit menu 80 File menu 80 Health Check 97 LUN Reconstruction 103 Message Log 82 Options menu 80 options summary 9 overview 78 task summary chart 11 troubleshooting Health Check 201 LUN Reconstruction 203 Message Log 199 Status line described 29 storutil see command line utilities subsystem see RAID Module Swap Active Passive Controllers procedures 164 when to use 164 symping see command line utilities symsm see command line utilities system performance optimizing in reconstruction 104 T task charts Configuration 10 Maintenance Tuning 13 Recovery 12 Status 11 temperature exceeded failure type on drive tray 101 123 threshold level reached 192 total capacity defined 187 displayed for drive group 50 troubleshooting Caching Parameters 210 common to all applications 190 Configuration Application 196 Firmware Upgrade 210 Health Check 201 Locate Module 195 LUN Reconstruction 203
207. ted TABLE 5 6 describes the possible failure types that Recovery Guru could display in the Failure column Each failure detected for a module appears on a single line You can see individual drive or LUN statuses using Module Profile gt Drive or LUNs detailed information See Possible Component Statuses on page 112 for information on individual drive LUN or controller statuses TABLE 5 6 Possible Failure Types Failure Type Probable Cause Drives Drive Failure Multiple Drive Failure Multiple Offline Failed Drives Hot Spare Failure Multiple Unresponsive Drives Unresponsive Drive One drive in a drive group has failed A RAID Module could show this failure on more than one line as long as the failed drives belong to different drive groups Caution On a RAID 0 LUN a single drive failure causes the loss of all data More than one drive in the same drive group has failed on a RAID Module One or more drives has been placed Offline because data reconstruction failed and a read error occurred for one or more Failed drives in the LUN A hot spare drive has failed while being used by a LUN on the RAID Module Note This means that the drive the hot spare was covering for is also still Failed and the LUN has probably become Degraded The controller is unable to communicate with multiple drives in the selected RAID Module Important If you see this result the drives status in Module Profile
208. ted data blocks if parity inconsistencies are found and corrected Recovery qualab133 File Options Help Module Information Locate Module Manual Parity Check Repair RAID Module Logical Unit RAID Level Logical Unit Status Optimal Optimal Optimal Optimal Optimal Optimal Optimal qualab133_001 qualab133_001 qualab133_001 qualab133_001 Manual Parity qualab133_001 Check Repair qualab133_001 qualab133_001 e a a an an of Parity Check Repair Progress Checking LUN 0 on qualab133_001 r Start Parity Check Repair Help FIGURE 5 3 Main Manual Parity Check Repair Window 126 RAID Manager 6 1 User s Guide October 1997 TABLE 5 7 Main Manual Parity Check Repair Window Elements Window Elements Description RAID Module Logical Unit RAID Level Logical Unit Status Parity Check Repair Progress Start Parity Check Repair Identifies the specific module containing the LUN It is possible to see a RAID Module listed more than once because each LUN is listed separately Identifies the LUNs configured for the particular RAID Module Each line shows only one LUN Indicates the RAID Level of the LUN Possible RAID Levels are 0 1 3 and 5 Shows the operating condition of the affected LUNs For an explanation of possible statuses and any recommended action to take see TABLE 5 3 Displays a histogram when parity check repair begins This graphic
209. ther host machine It is permissable to open multiple instances of the other applications Configuration qualab133 File Help Module Information RAID Module Logical Unit LUN Information Number RAID Total Remaining Device RAID Capacity Group of LUNs Level Drives Capacity MB Capacity MB LUN Group Name Level MB i c1t5d0s0 c1t5d1s0 c1t5d2s0 c0t4d3s0 Hot Spare c t4d5s0 1 5 5 5 5 cot4d4s0 5 5 cot4d sd 4 Status Optimal Optimal Optimal Optimal Optimal Optimal Optimal FIGURE 3 1 Main Configuration Window Chapter 3 Using the Configuration Application 47 48 TABLE 3 1 Main Configuration Window Description Window Element Description Procedures File Provides three options Save Module Profile Saves profile information to a file for a selected RAID Module Important Save the profile of each RAID Module during initial installation and anytime you change your configuration You can use this information if you need to perform any recovery or maintenance tasks Reset Configuration Resets the RAID Module back to a default configuration Use only as a last resort Exit Quits Configuration page 42 page 75 page 30 Help Gives you access to Online Help topics for all applications page 30 RAID Module Selection Box Enables you to select a specific RAID Module before selecting the option you want t
210. three 2 GB drives and two 4 GB drives then the available capacity field would show 10 GB 5 x 2 GB Furthermore if you create LUNs using mixed capacity drives you are only using the smallest capacity available 2 GB and you cannot access the additional capacity of the larger drives If you are configuring a RAID 1 drive group the mirrored pair drives are indicated by a number appearing in front of the drive location information For example 1 appears in front of the first drive in the first mirrored pair 2 appears in front of the first drive in the second mirrored pair and so on Chapter 3 Using the Configuration Application 63 64 TABLE 3 3 Create LUN Options Window Description Continued Option Use Caching Enables you to change write caching write cache mirroring and cache Parameters without batteries parameters for each LUN you create Important This option is dimmed if the controller s in the RAID Module do not support caching There are several conditions such as low battery power where the controller may temporarily turn off the cache settings until the condition is back to normal unless you have enabled the cache without batteries option In such cases Module Profile gt LUNs indicates when caching is enabled but inactive Use the Maintenance Tuning Application Caching Parameters if you need to change any caching parameters after creating the LUNs Important Selecting Cache Without Batteries al
211. tice a delay Note If your default log file is large you could notice a delay when starting the Status Application because Message Log will show this file for All RAID Modules the default selection Action Reduce the size of the log file or select a new default log file Change the default log file so that future events are written to this new log Choose Options Log Settings from the File menu Save the log file to another file name Choose Save Log As from the File menu You must then delete the contents of the current log file to reduce its size Chapter 7 Common Questions and Troubleshooting 199 200 TABLE7 7 Troubleshooting for Message Log Continued Default log file not found message Cause The log file designated as the default cannot be found Most likely this file has been deleted but is still entered as the default in Log Settings Action If you see this message you also are asked if you want the software to create a default log file If you click OK an empty log file is created using the default log s file name If you click NO you exit Message Log Important The software creates the default log file again the next time the software writes messages to this file If you want to rename the default log file change this parameter using Options Log Settings see To Change Log Settings in Chapter 4 Using the Status Application No Match Found message Cause This message means that the
212. time Caution Changing any of these settings affects all RAID Modules Note Use the Recovery Application to run a one time parity check repair manually See Manually Checking and Repairing Parity on page 125 Note You can run an immediate parity check repair manually by using Manual Parity Check Repair in the Recovery Application What Happens The current settings display for the automatic parity check repair operation See FIGURE 6 9 for a window similar to the one you see when you select Options from the top menu then Auto Parity Settings See Parity in Chapter 2 for a general description of parity RAID Manager 6 1 User s Guide October 1997 Automatic Parity Check Repair Settings Parity Settings Applies To All RAID Modules Enable Automatic Parity Check Repair Range 00 00 to 23 59 00 00 12 00 am 23 59 11 59 pm FIGURE 6 9 Auto Parity Settings Dialog Box To Change Automatic Parity Check Repair Settings Ensure that the RAID Module you want is selected If you need instructions for selecting a RAID Module see Selecting a Module on page 33 before proceeding Caution Changing any of these settings affects all RAID Modules Choose Auto Parity Settings from the Options menu The Automatic Parity Settings dialog box is displayed FIGURE 6 9 Do either of the following a Select the Enable Automatic Parity Check Repair box if you want auto parity to
213. truct Revive Description The location of the drive in the selected RAID Module This identifier corresponds to the drive s SCSI Channel number and SCSI ID unique to the drive The location information is displayed as x y on screen where the channel number is always listed first For example 2 8 corresponds to the drive at location SCSI Channel 2 and SCSI ID 8 The operating condition of the drive For an explanation of possible drive statuses and any recommended action to take see TABLE 5 2 The LUNs by number contained on the drive group The number is displayed for each drive in the drive group The RAID Level of the LUN Possible RAID Levels are 0 1 3 and 5 The operating condition of the LUN For an explanation of possible LUN statuses and any recommended action to take see TABLE 5 3 Enables you to manually fail drives See the procedure on page 132 Enables you to manually begin reconstruction for drives See the procedure on page 133 Enables you to manually revive drives See the procedure on page 134 Chapter 5 Using the Recovery Application 131 132 Failing a Drive When to Use It is best to wait and let the controller fail a drive however you may want to use this option if you want to replace a drive before the controller fails it For example if Recovery Guru is unable to complete a Health Check because a drive is Unresponsive click Options gt Manual Recovery gt Drives to determ
214. truction Rate amp Optimize For i n Drive System Reconstruction lessage Group LUN Reconstruction Progress Performance Performance Y LUN Reconstruction Instruction If you need to change the reconstruction rate of any LUNs that are not currently reconstructing go to the Maintenance Tuning Application FIGURE 4 6 Main LUN Reconstruction Window TABLE 4 10 Main LUN Reconstruction Window Elements Window Elements Description Drive Group Provides the drive group number for the selected RAID Module LUN Provides the LUN number LUN on a particular drive group Reconstruction Displays histograms for each LUN undergoing reconstruction that Progress indicate the percentage of reconstruction progress Logical units that have completed reconstruction show 100 LUNs not yet reconstructing show Waiting To Reconstruct Reconstruction Rate Optimize For System Indicates the rate that favors system performance over reconstruction Performance speed Reconstruction Indicates the rate that favors reconstruction speed over system Performance performance RAID Manager 6 1 User s Guide October 1997 v To Change the Reconstruction Rate If you select All RAID Modules the option is not available dimmed 1 Ensure that the RAID Module you want is selected For instructions on how to select a RAID Module see Selecting a Module on page 33 2 Click LUN Reconstruction The Re
215. ture developed by Sun Microsystems Inc The OPEN LOOK and Sun Graphical User Interface was developed by Sun Microsystems Inc for its users and licensees Sun acknowledges the pioneering efforts of Xerox in researching and developing the concept of visual or graphical user interfaces for the computer industry Sun holds a non exclusive license from Xerox to the Xerox Graphical User Interface which license also covers Sun s licensees who implement OPEN LOOK GUIs and otherwise comply with Sun s written license agreements RESTRICTED RIGHTS Use duplication or disclosure by the U S Government is subject to restrictions of FAR 52 227 14 g 2 6 87 and FAR 52 227 19 6 87 or DFAR 252 227 7015 b 6 95 and DFAR 227 7202 3 a DOCUMENTATION IS PROVIDED AS IS AND ALL EXPRESS OR IMPLIED CONDITIONS REPRESENTATIONS AND WARRANTIES INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY FITNESS FOR A PARTICULAR PURPOSE OR NON INFRINGEMENT ARE DISCLAIMED EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD TO BE LEGALLY INVALID Copyright 1997 Sun Microsystems Inc 901 San Antonio Road Palo Alto CA 94303 Etats Unis Tous droits r serv s Des portions de ce produit sont prot g es par un copyright 1997 de Symbios Logic Inc Tous droits r serv s Ce produit ou document est prot g par un copyright et distribu avec des licences qui en restreignent l utilisation la copie la distribution et la d compilation Aucune partie de ce
216. u make any changes on this screen AFTER making changes in Options then ALL option settings will reset back to their default values FIGURE 3 3 Creating LUNs Chapter 3 Using the Configuration Application 57 58 TABLE 3 2 Creating LUN Window Description Selection Description Create Begins the LUN creation process Cancel Returns to the main Configuration screen Options Displays the Options screen for Create LUN RAID Level When you select the different RAID Levels a brief description of that RAID Level displays Use this description to determine which RAID Level is best for the LUNs you are creating The default settings are RAID 5 for new LUNs RAID 0 if less than 3 unassigned drives are available or the RAID Level of the existing drive group You can specify a RAID Level only if you are creating a LUN from unassigned drives Note All RAID Levels except RAID 0 use part of the drives capacity for redundancy If a RAID Level is dimmed it means that the current number of drives shown in the Number of Drives field is not a valid number for that RAID Level For example RAID 1 must always use an even number of drives RAID Manager 6 1 User s Guide October 1997 TABLE 3 2 Selection Creating LUN Window Description Continued Description Available Capacity This field changes to reflect the RAID Level and number of drives you selected and the actual capacity th
217. u select Caching Parameters TABLE 6 6 describes the window elements Note There may be other caching parameters you can set using the command line utility raidutil See Chapter 1 for information on these parameters and this utility Maintenance and Tuning qualab133 File Options Help Module Information RAID Module qualab133_001 Seket Locate Module Module Module Profile Caching Parameters Caution Write Write Cache Cache Without ashina hdirrarina Rattarine LUN Selecting Cache Without Batteries allows write caching oye to continue even when the Reconstruction Rate N batteries are discharged com Balancin pletely or not fully charged Normally write caching is turned off until the batteries are charged If you select this option without a UPS for pro Caching Parameters tJ Firmware Save Cancel Help Upgrade Cancel changes and leave caching parameters FIGURE 6 7 Main Caching Parameters Window Chapter 6 Using the Maintenance Tuning Application 167 168 TABLE 6 6 Main Caching Parameters Window Description Window Element Description LUN Write Caching Write Cache Mirroring Cache Without Batteries Save Cancel Identifies the number of the LUN for the selected RAID Module Each LUN shows on a separate line Allows you to select check boxes to indicate whether to enable disable the write caching option for
218. uickly advance through this alphabetical list For example pressing M will take you to the first word that begins with M To view a definition click and hold the mouse button while pointing to a glossary term You can use the Home and End keys on your keyboard to quickly move to the beginning and end of the glossary Same Level Displays topics of the same level using the lt lt and gt gt keys to move Topics forward or backward You can also select this button then All Topics from the drop down menu to make the arrow buttons move you through every topic in help lt lt and gt gt If you are in Same Level Topics these buttons move you to the previous next topic within the level you are currently viewing If you are in All Topics these buttons move you to the previous next topic across all levels Up Moves you to the next higher level of topics In many cases the online help offers more specific information than is given in this User s Guide If you have questions concerning a specific procedure check the online help before coming back to this manual Selecting a Module When to Use Use the Select Module option to select or view information about a specific RAID Module to add or remove modules in your system or to change a module s information module name independent controllers or comments area See FIGURE 2 6 for a window similar to the one you see when you start Select Module TABLE 2 4 describes
219. uide October 1997 Viewing LUN Reconstruction Progress and Changing the Reconstruction Rate LUN Reconstruction When to Use Use this option to view reconstruction progress or to change the reconstruction rate for the LUNs undergoing reconstruction on a selected RAID Module You can change the reconstruction rate even when LUNs are undergoing reconstruction However with this option you can change the rate only for LUNs that are currently reconstructing For more information about reconstruction see Reconstruction on page 23 Note Use the Maintenance Tuning Application to change the reconstruction rate for all LUNs whether they are reconstructing or not See Changing the LUN Reconstruction Rate on page 150 What Happens The software displays the drive group LUNs that will be reconstructing Once reconstruction begins for a LUN a histogram shows the percentage of progress LUNs that have completed reconstruction show 100 LUNs not yet reconstructing show Waiting To Reconstruct Also a Slider bar shows the current setting for each LUN s reconstruction rate See FIGURE 4 6 for a window similar to the one you see when you select LUN Reconstruction TABLE 4 10 describes the window elements Chapter 4 Using the Status Application 103 104 Status qualab133 File Edit Options Help Module Information RAID Module qualab133_001 Locate Module Reconstruction Status Recons
220. ur RAID Module Each RAID Module can support as many hot spare drives as there are SCSI Channels probably either 2 or 5 depending on the model of your RAID Module Caution Hot spares cannot cover for drives with a larger capacity that is a 2 GB hot spare drive cannot stand in for a 4 GB failed drive If your unassigned drive group contains drives with different capacities then the Configuration Application selects the first available drive when you select Create Hot Spare which may not be the largest capacity What Happens If a drive fails the hot spare drive automatically takes over for the failed drive until you replace it Once you replace the failed drive the hot spare drive automatically returns to a Standby status after reconstruction is completed on the new replacement drive A hot spare drive is not dedicated to a specific drive group or LUN but instead can be used for any failed drive in the RAID Module with the same or smaller capacity Note When you assign a drive as a hot spare it is used for any configured RAID 1 3 or 5 LUN that may fail in the RAID Module You cannot specify a hot spare for a particular drive group LUN RAID Manager 6 1 User s Guide October 1997 You can determine the status of the hot spare drives by highlighting the hot spare drive group in the main Configuration window and selecting List Locate Drives After you create a hot spare drive the Drive Groups area of the mai
221. uration based on NVRAM settings specified in the controller To Reset the Configuration File gt Reset Configuration is dimmed if the selected RAID Module has an independent controller configuration This operation could also fail if the RAID Manager software cannot gain exclusive access to the drive groups LUNs such as if file systems are mounted Chapter 3 Using the Configuration Application 75 oS 5 6 Ensure that the RAID Module you want is selected For instructions on selecting a RAID Module see Selecting a Module on page 33 Caution You will lose all data on the selected RAID Module Use this option only as a last resort Caution You must first stop I Os to the affected RAID Module and ensure no other users are on the system Choose Reset Configuration from the File menu Click OK to confirm that you want to reset your configuration Note Step 4 is your last chance to Cancel Click OK to confirm again that you want to reset your configuration A default configuration displays in the main Configuration window Note This does not necessarily mean that you have all unassigned drives you may have a small LUN configured Click OK at the reset was successful confirmation window You will have to redefine all of your LUNs and drive groups using the Create LUN option Note Your operating system may have additional requirements to complete the configuration pr
222. ves Drive Location Capacity MB Status Optimal 7 Optimal Optimal Optimal FIGURE 3 2 List Locate Drives Main Window 4 Click Locate In the pop up window click Start The lights on the selected drive group will flash in a distinctive pattern either sequentially or simultaneously depending on the type and RAID Level of the selected drive group Physically locate the drives in the RAID Module 5 Click Stop and the lights stop flashing The main Configuration window is displayed 54 RAID Manager 6 1 User s Guide October 1997 Creating Logical Units LUNs When to Use Use this option to either create new LUNs from unassigned drives or create additional LUNs on an existing configured drive group that has remaining capacity A logical unit LUN is the basic structure you create on the RAID Modules to store and retrieve your data Note A RAID Module can support multiple RAID Levels but each logical unit configured on the same physical drives drive group must use the same RAID Level Note If you need to change any LUN parameters for example RAID Level segment size and so on after the LUNs have been created see Changing LUN Parameters Once you create LUNs you must make them available to the operating system Refer to your operating system documentation for details on adding a drive Remember each LUN not the drive group is seen by the operating system as one drive
223. ves in the Recovery Application or Health Check in the Status Application Use Recovery Guru to correct the problem No action required No action required Verify that the drive is the correct kind Recovery Guru will detect these problems for you See page 118 Determine which drive is Unresponsive then manually fail it using Manual Recovery gt Drives see the procedure on page 132 Chapter 5 Using the Recovery Application 113 Note If you have hot spares configured for a RAID Module the hot spare contains no data and acts as a standby in case a drive fails in a RAID 1 3 or 5 LUN Depending on how many hot spares you have configured a LUN could remain Optimal and still have several failed drives each one being covered by a hot spare TABLE 5 3 Possible LUN Status Logical Unit Status Optimal Formatting Reconstructing Degraded Dead Inaccessible Locked Indication The LUN is operating normally The LUN is not available because it is being formatted The controller is currently reconstructing a drive on the LUN A single drive in a drive group has failed on a RAID Level 1 3 or 5 LUN and the LUN is now functioning in a degraded mode The LUN is no longer functioning Furthermore all the LUNs in the drive group are Dead also Caution This is the most serious status a LUN can have and you will lose data unless the LUN status changed from Degraded becau
224. ways select Recovery Guru before attempting any manual recovery procedure Incorrectly performing a procedure or performing the wrong procedure could cause equipment damage or data loss Recovery Guru analyzes the problem and provides the appropriate steps to correct the problem Because Recovery Guru s diagnosis takes into account each RAID Module s configuration that is the number and type of controllers and the relationship between RAID Level and drive groups its step by step instructions ensure that you are correcting the right problem For an example of using Recovery Guru to recover from two drive failures see Example Recovering From Drive Failures RAID Manager 6 1 User s Guide October 1997 Common Navigating Features This software requires that you use a mouse for full functionality however you can also use your keyboard to access the taskoptions TABLE 2 2 describes basic navigation features you should understand before using the RAID Manager software TABLE 2 2 Mouse and Keyboard Navigation When using a To select an option place the pointer over the desired option and Mouse single click To receive information about a top menu option you must click on the option and hold down the left mouse button To receive information about a particular button option move the mouse over the appropriate button and read the description near the bottom of the window To highlight items do one of the follow
225. x again Try selecting a new file If that does not work exit Firmware Upgrade obtain a new copy of the desired firmware release and begin this procedure again Restrictions that might prevent a firmware upgrade After you select the Online or Offline upgrade option the software determines whether the selected RAID Module s is ready for the type of upgrade you selected It is possible that the software may find restrictions for performing the upgrade For example You cannot perform an offline upgrade with a module that is receiving I O You can only perform an online upgrade on a module that has two functioning Series 3 controllers with the RDAC driver installed Also you cannot perform the online upgrade on a module with any LUNs that have statuses other than Optimal If such restrictions are found you receive notification If you selected a single RAID Module you receive an Upgrade Restriction message indicating what problem you should fix before attempting to upgrade the firmware again for that module If you selected All RAID Modules the firmware upgrade continues for each possible module At the end of the firmware upgrade process you see a list of which modules were upgraded and which were not For each module that was not upgraded you should see a reason why the upgrade did not occur If you see a download status of Failed refer to TABLE 6 10 for the recommended action to take Chapter 7 Common Questions and Troub
226. y Report displays for this drive failure that provides the drive s location 1 1 the affected LUN s number status and RAID Level and a summary of what the recovery procedure will involve You see that the LUN is Degraded and not Dead therefore the failed drives are not in the same drive group Furthermore you see that the LUN s data should still be accessible Click OK Important Notes displays to summarize what you should consider before removing the failed drive Note The type of recovery procedure required for drive failures depends on the RAID Level of the affected logical unit and the number of drives failed in the same drive group Therefore it is best to use Recovery Guru For example in a RAID 0 LUN one drive failure causes the loss of all data In a RAID 1 3 or 5 LUN one drive failure causes the LUN to go to Degraded but data is still accessible Click OK The Replacement Procedure For Drive At Location 1 1 provides a step by step procedure to walk you through removing and replacing the failed drive Carefully follow each step to benefit from Recovery Guru s analysis and verifications a Verify that the new drive s capacity matches the failed drive s capacity b Remove the failed drive c Wait 30 seconds d Insert the new drive into the drive canister RAID Manager 6 1 User s Guide October 1997 10 Caution Do not click OK in the Replacement Procedure window unless you
227. y default configuration may work for your environment however if the logical units are not set up according to your needs for example you require more LUNs a different RAID Level and so on you can change the configuration by using this application Use the Configuration Application to accomplish the following tasks List and locate drives contained in a RAID Module Create LUNs on unassigned or existing drive groups Create hot spare drives as failed drive protection Delete a drive group LUN or hot spare drive Before you begin the procedures in this chapter you should be familiar with the information in Chapter 2 Features Common to All Applications These common concepts navigational functions and procedures are the same in Configuration as they are in the other applications A task summary chart of the Configuration Application is shown in FIGURE 1 3 Step by step procedures for each task in Configuration begin on page 52 RAID Manager 6 1 User s Guide October 1997 v To Start the Configuration Application Double click the Configuration icon The main Configuration window is displayed FIGURE 3 1 TABLE 3 1 describes the window elements Caution To prevent any possible configuration conflicts you can open only one Configuration window at one time from any one host machine However use caution in a multi host configuration or Networked environment to not start a second Configuration window from ano

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