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Compaq HSZ80 manual 22Configuring Storagesets

Models: HSZ80

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4–22Configuring Storagesets

SCSI-2 Mode

As you add storage units and set SCSI IDs over the CCL or above its location, the CCL immediately and automatically moves into the next available free space, which would be the lowest available Target ID/LUN setting.

IMPORTANT: If you delete a unit at a setting below the CCL setting, the CCL does not automatically move to that setting. Instead, it only moves to the lowest deleted unit’s setting when you restart the controller.

SCSI-3 Mode

The CCL always remains in a fixed location. It is always located at LUN 0 of every target ID. If you have the CCL enabled, the controller will let you configure a device above LUN 0 of each target ID.

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Compaq HSZ80 manual 22Configuring Storagesets

Contents

HSZ80 Array Controller ACS Version Page Japan USA Page Chapter Creating Storagesets CLI Commands ViiViii Appendix a Page Figures Xii Tables XiiiXiv Getting Help Compaq Website Telephone NumbersComponent Precaution PrecautionsElectrostatic Discharge Precautions Xvi About This GuideXvii Vhdci Cable PrecautionsMaintenance Port Precautions Xviii About This Guide ConventionsTypographical Conventions Special Notices XixRequired Tools Xx About This GuideRelated Publications XxiRevision History Xxii About This GuideGeneral Description Typical Installation 2General DescriptionBasic Building Block Basic Building Blocks List 4General DescriptionSummary of HSZ80 Features Summary of Controller Features6General Description HSZ80 Array Controller Bridging the Gap Between the Host and Its Storage Subsystem8General Description HSZ80 Array Controller HSZ80 Array ControllerDescription of Parts 10General DescriptionDescription of Parts Parts of the Optional Maintenance Port Cable 12General DescriptionOperator Control Panel EMU PVAMaintenance Port 14General DescriptionVirtual Terminal Display Fault Management UtilityUtilities and Exercisers Code Load and Code Patch Utility Configuration UtilityDisk Inline Exerciser Clone UtilityDevice Statistics Utility Field Replacement UtilityChange Volume Serial Number Utility 18General Description Cache Module Memory ConfigurationsCache Module Location of Cache Module Parts Read-Ahead Caching Caching TechniquesRead Caching 20General DescriptionWrite-Through Caching Write-Back CachingCache Policies Resulting from Cache Module Failures Fault-Tolerance for Write-Back CachingNonvolatile Memory 22General DescriptionCache Policies and Cache Module Status 24General Description Failover to controller BResulting Cache Policies and ECB Status 26General Description Through caching to its units Less than 28General Description External Cache Battery 10 ECB Capacity Based on Memory Size11 Location of Parts 30General DescriptionCharging Diagnostics Battery HysteresisPage Configuring an HSZ80 Array Controller Introduction Configuration Rules2Configuring an HSZ80 Array Controller Configuring an HSZ80 Array Controller Few Tips4Configuring an HSZ80 Array Controller Configuring a Single Controller Location of Parts for a Single Controller Configuration6Configuring an HSZ80 Array Controller SET Thiscontroller HOSTFUNCTION= ID, Mode 8Configuring an HSZ80 Array Controller Connecting a Single Controller to the Host 10Configuring an HSZ80 Array Controller Location of Parts for Transparent Failover 12Configuring an HSZ80 Array Controller SET Failover Copy = ThiscontrollerRestart Othercontroller Restart Thiscontroller 14Configuring an HSZ80 Array Controller Connecting in Transparent Failover Mode to the Host 16Configuring an HSZ80 Array Controller Location of Parts for Multiple-Bus Failover 18Configuring an HSZ80 Array Controller SET Multibusfailover Copy = ThiscontrollerRestart Othercontroller Restart Thiscontroller 20Configuring an HSZ80 Array Controller Connecting in Multiple-Bus Failover Mode to the Host Change the CLI prompt 22Configuring an HSZ80 Array ControllerOptional Steps Set the maximum data-transfer rate 24Configuring an HSZ80 Array Controller UPS SupportSetting the PVA Module ID Switch 26Configuring an HSZ80 Array Controller Establishing a Local Connection to ControllerPC/Terminal to Maintenance Port Connection 28Configuring an HSZ80 Array Controller This Controller and Other ControllerSelecting a Failover Mode Using Transparent Failover ModeUsing Multiple-Bus Failover Mode 30Configuring an HSZ80 Array ControllerSelecting a Cache Mode Enabling Mirrored Write-Back CacheFault-Tolerance 32Configuring an HSZ80 Array ControllerSetting Scsi Target ID Numbers Host Scsi Bus34Configuring an HSZ80 Array Controller Device Scsi BusUsing Preferred ID Numbers Page Creating Storagesets 2Creating Storagesets Disk drives Planning and Configuring Storagesets 4Creating StoragesetsCreating a Storageset and Device Profile Creating Storagesets Type of StoragesetDetermining Storage Requirements 8Creating Storagesets Choosing a Storageset TypeA Comparison of Different Kinds of Storagesets For Disk Array TechnologyUsing Stripesets to Increase I/O Performance Considerations for Planning a Stripeset 10Creating StoragesetsDistribute Members across Ports Using Mirrorsets to Ensure Availability 12Creating StoragesetsConsiderations for Planning a Mirrorset Mirrorsets Maintain Two Copies of the Same Data14Creating Storagesets First Mirrorset Members on Different BusesUsing RAIDsets to Increase Performance Availability Considerations for Planning a RAIDset 16Creating StoragesetsPage 18Creating Storagesets Striping and Mirroring in the Same StoragesetConsiderations for Planning a Striped Mirrorset Cloning Data for Backup 20Creating StoragesetsClone Steps for Duplicating Unit Members Example 22Creating StoragesetsUse available device DISK20400size=832317 for member 24Creating Storagesets DISK20000size=832317 y,n y ? yBacking Up Your Subsystem Configuration Saving Subsystem Configuration Information to a Single DiskSaving Subsystem Configuration Information to a Storageset 26Creating StoragesetsDisplaying the Status of the Save Configuration Feature Controller28Creating Storagesets CacheNotransportable 30Creating Storagesets Node IDsRestoring Node IDs Page Assigning Unit Numbers for Host Access to Storagesets 32Creating StoragesetsUnit Numbering Examples LUNCreating a Storageset Map 34Creating Storagesets10. Storageset Map Locate devicename Device PTL Addressing Convention within Controller36Creating Storagesets 11. PTL Naming Convention 38Creating Storagesets Device port numbers Target Numbers13. Locating Devices using PTLs 40Creating Storagesets Planning PartitionsDefining a Partition Guidelines for Partitioning Storagesets Disk Drives Changing Switches Choosing Switches for Storagesets DevicesEnabling Switches 42Creating StoragesetsReconstruction Policy RAIDset SwitchesReplacement Policy Membership 44Creating StoragesetsMirrorset Switches 46Creating Storagesets Copy SpeedRead Source Disaster Tolerance Support 48Creating Storagesets Device SwitchesTransportability Device Transfer Rate Dtsupport Local/Remote50Creating Storagesets Initialize Switches Chunk SizeIncreasing the Request Rate 52Creating StoragesetsIncreasing the Data Transfer Rate 16. Chunk Size Smaller than the Request SizeMaximum Chunk Sizes for a RAIDset Increasing Sequential Write PerformanceMaximum Chunk Size for RAIDsets 54Creating StoragesetsSave Configuration Considerations for Saving the Configuration56Creating Storagesets Destroy/Nodestroy 58Creating Storagesets Unit SwitchesUnit Switches for Storagesets Configuring Storagesets Adding Disk Drives 2Configuring StoragesetsADD Disk DISKnnnn ptl-location switchvalue Adding One Disk Drive at a TimeConfiguring a Stripeset ADD Mirrorset mirrorset-name DISKnnnn DISKnnnn switch Configuring a Mirrorset4Configuring Storagesets Initialize mirrorset-name switchADD Unit unit-number mirrorset-name switch Show mirrorset-nameADD Raidset RAIDset-name DISKnnnn DISKnnnn DISKnnnn switch Configuring a RAIDset6Configuring Storagesets Initialize RAIDset-name switchADD Stripeset stripeset-name mirrorset1 mirrorset2 Configuring a Striped MirrorsetShow RAIDset-name 8Configuring Storagesets Configuring a Single-Disk Unit ADD Unit unit-number DISKnnnn switchvalue10Configuring Storagesets Partitioning a Storageset or Disk DriveInitialize storageset-name switch Show storageset-name12Configuring Storagesets Adding a Disk Drive to the Spareset Removing a Disk Drive from the Spareset 14Configuring StoragesetsEnabling Autospare Delete unit-number 16Configuring StoragesetsDeleting a Storageset Delete storageset-nameChanging RAIDset and Mirrorset Switches Changing Switches for a Storageset or DeviceDisplaying the Current Switches Changing Device Switches18Configuring Storagesets Changing Initialize SwitchesChanging Unit Switches Configuring with the Command Console LUN Enabling and Disabling the CCL20Configuring Storagesets SCSI-2 ModeSCSI-3 Mode Finding the CCL LocationTroubleshooting with the CCL Adding Storage Units with the CCL22Configuring Storagesets Configuring Units with Multiple Hosts Host Modes24Configuring Storagesets IBM AIXSetting Host Modes Designating the Port Transparent Failover Mode26Configuring Storagesets Accessing Units on a Given Port 28Configuring Storagesets Designating the Host Scsi ID NumberScsi ID 30Configuring Storagesets Designating the Port and Designating the Host Scsi ID NumberSET this PORT1ID = SET this PORT2ID = Multiple-Bus Failover Mode 32Configuring StoragesetsAssigning Units through Multiple Host Adapters 34Configuring Storagesets Moving Storagesets Moving a Storageset from one Subsystem to AnotherDelete disk-name 36Configuring StoragesetsLocate disk-name ADD Disk disk-name PTL-locationADD storageset-name disk-name disk-name ADD Unit unit-number storageset-name38Configuring Storagesets Move disk drives to their new locationCLI Commands 2CLI Commands Using the CLICommand Overview CLI OverviewSET Thiscontroller ? Entering CLI CommandsGetting Help Unit Naming Recall and Edit Command Keys4CLI Commands Unit Number Command parameter Switches Command Syntax6CLI Commands Changing the CLI PromptParameters ADD DiskSyntax Transportable Switches8CLI Commands RemoteTRANSFERRATEREQUESTED=10MHZ TRANSFERRATEREQUESTED=5MHZ TRANSFERRATEREQUESTED=20MHZ DefaultTRANSFERRATEREQUESTED=ASYNCHRONOUS ADD Disk DISK40200 4 2 0 TransportableInitialize DISK20000 2 0 ADD Unit D199 DISK20000 10CLI CommandsSee also ADD Disk DISK200 2 0 0 RemoteADD Mirrorset COPY=FASTDtsupport Nodtsupport 12CLI CommandsPOLICY=BESTPERFORMANCE Default POLICY=BESTFITREADSOURCE=disk-name READSOURCE=LEASTBUSY Default READSOURCE=ROUNDROBINInitialize MIRR1 ADD Unit D104 MIRR1 14CLI CommandsADD Mirrorset MIRR1 DISK10000 DISK20100 DISK30200 Show Mirrorsets Show Storagesets Unmirror ADD Disk ADD UnitInitialize Mirror Reduce Parameter 16CLI CommandsADD Passthrough ADD Passthrough passthrough-name scsi-port-target-lunADD Passthrough TAPE20300 2 3 ADD Unit P100 TAPE20300 Show passthrough-name 18CLI CommandsShow Devices Show Passthrough ADD Raidset RAIDset-nameRECONSTRUCT=FAST 20CLI CommandsRECONSTRUCT=NORMAL Default ADD Raidset RAID9 DISK10000 DISK20100 DISK30200 Noreduced DefaultReduced Initialize RAID8ADD Raidset RAID6 DISK10300 DISK20400 DISK30200 Reduced 22CLI CommandsADD Unit D70 RAID8 SET Raidset Show RaidsetDelete Spareset Show Spareset Show Storagesets ADD SparesetADD Spareset DISK20200 ADD Spareset DISK30300 Disk-nameStripeset-name 24CLI CommandsADD Stripeset Container-name1 container-name2 container-nameNADD Stripeset STRIPE1 DISK10000 DISK20100 DISK30200 Initialize STRIPE1 ADD Unit D103 STRIPE1Initialize Show Storageset Show Stripeset 26CLI CommandsADD Unit ADD Mirrorset Unit-number ADD UnitADD Unit unit-number container-name ADD Unit Switches for Storagesets 28CLI CommandsPage Nopreferredpath Default 30CLI CommandsMAXIMUMCACHEDTRANSFER=32 Default MAXIMUMCACHEDTRANSFER=n PARTITION=partitionnumberNoreadcache Readcache DefaultReadaheadcache Default NoreadaheadcacheNowriteprotect 32CLI CommandsNorun NowritebackcacheADD Unit D102 DISK10000 PREFERREDPATH=THISCONTROLLER Delete unit-number SET unit-number 34CLI CommandsCreatepartition Show UnitsClearerrors CLI Clearerrors CLIClearerrors CLI Clearerrors Clearerrors Clearerrors ClearerrorsController Clearerrors controller Invalidcache36CLI Commands Examples Clearerrors DISK30000 Unknown Clearerrors device-nameUNKNOWN38CLI Commands Device-nameSee also Clearerrors D103 Lostdata Clearerrors unit-numberLOSTDATA40CLI Commands See also Clearerrors D103 Unwriteabledata Clearerrors unit-number42CLI Commands UnwriteabledataSee also Configuration Reset Configuration Reset44CLI Commands Configuration Restore Configuration Save InitializeConfiguration Restore Configuration Restore46CLI Commands Configuration Reset Configuration Save InitializeConfiguration Save Configuration Reset Configuration Restore InitializeCreatepartition container-name SIZE=percent 48CLI CommandsCreatepartition SIZE=percentCAPACITY= CYLINDERS= HEADS= SECTORSPERTRACK= 50CLI Commands Destroy Partition ShowDelete DISK10000 Delete STRIPE1Delete RAID9 52CLI CommandsDelete Failedset Delete Spareset Unmirror SET Failedset Show Failedset Delete FailedsetDelete Failedset DISK20200 Delete Spareset DISK20300 Delete Spareset54CLI Commands ADD Spareset Show SparesetDelete unit-number Delete D103Delete Failedsets Delete Sparesets Destroypartition 56CLI CommandsADD Unit Clearerrors Lostdata Partition-number DestroypartitionDestroypartition container-name PARTITION=partition-number 58CLI Commands Delete D102 Destroypartition RAID9 PARTITION=2RUN DirectoryDirectory Help 60CLI CommandsHelp HelpSET ? Your options areInitialize container-name 62CLI CommandsInitialize CHUNKSIZE=DEFAULT Default CHUNKSIZE=n Saveconfiguration 64CLI CommandsDestroy Default Nosaveconfiguration DefaultInitialize DISK10000 Saveconfiguration Show Devices Full66CLI Commands Reduce DISK40400 Initialize DISK40400 NodestroyLocate parameter CancelLocate ALLPTL SCSI-location 68CLI CommandsDisks UnitsLocate Disks Locate DISK10000 Locate CancelLocate D102 Mirror disk-name mirrorset-name 70CLI CommandsMirror Nopolicy Default POLICY=BESTFIT POLICY=BESTPERFORMANCE72CLI Commands ADD Mirrorset Reduce Show Mirrorsets Unmirror Battery on Poweroff74CLI Commands OverridebadflushPoweroff Switch Settings SECONDS=nn76CLI Commands Poweroff SECONDS=10Reduce Disk-name1 disk-name2 disk-name3 78CLI CommandsReduce disk-name1 disk-name2 disk-name3 Show STRIPE1 Show MirrorsetsSET mirrorset-name 80CLI CommandsADD Mirrorset RUN Clone Show Mirrorset Old-container-name RenameRename old-container-name new-container-name New-container-name82CLI Commands Rename DISK10000 Mydisk Show DisksRestart controller IgnoreerrorsNoignoreerrors Default Restart Thiscontroller 84CLI CommandsImmediateshutdown Restart OthercontrollerRetryerrors unit-number Retryerrors D103 UnwriteabledataRUN program-name 86CLI CommandsRUN Program-namePage 88CLI Commands RUN DilxSelftest controller Selftest controllerSelftest Thiscontroller 90CLI CommandsSelftest Othercontroller Ignoreerrors Restart controller Shutdown controllerThiscontroller SET controller SwitchesSET controller 92CLI Commands Allocationclass CACHEFLUSHTIMER=n CACHEFLUSHTIMER=10 DefaultNocacheups Default CacheupsNocommandconsolelun Default 94CLI CommandsCommandconsolelun HOSTFUNCTION=mode HOSTFUNCTION=ID,modeNODEID=nnnn-nnnn-nnnn-nnnn checksum NOPORT2ID 96CLI CommandsNOPORT1ID MirroredcachePage NOPORT2PREFERREDID 98CLI CommandsNOPORT1PREFERREDID SCSIVERSION=SCSI-3 SCSIVERSION=SCSI-2 DefaultTERMINALSPEED=baudrate TERMINALSPEED=9600 Default TERMINALPARITY=ODD TERMINALPARITY=EVEN100CLI Commands Maximum SCSI-Bus Lengths for Given Data Transfer RateSET Thiscontroller PORT1ID=2,5 101SET Othercontroller PROMPT=CONTROLLER B Show Thiscontroller Show Othercontroller102CLI Commands SET device-name103 SET DISK10300 Transportable 104CLI CommandsSET DISK20000 TRANSFERRATEREQUESTED=5MHZ SET DISK10300 RemoteSET EMU SET EMU105 FANSPEED=AUTOMATIC Default EMU Set Point Temperatures106CLI Commands FANSPEED=HIGHSET EMU FANSPEED=HIGH 107SET EMU SENSOR2SETPOINT=34 SET Failedset 108CLI CommandsSET Failedset Autospare NoautospareInit DISK10000 109SET DISK10000 Transportable SET Failedset AutospareThiscontroller Othercontroller 110CLI CommandsSET Failover SET Multibusfailover SET Nofailover SET Nomultibusfailover 111SET Failover COPY=THISCONTROLLER 112CLI Commands SET mirrorset-name113 MEMBERSHIP=number-of-membersREPLACE=disk-name 114CLI CommandsREMOVE=disk-name 115 116CLI Commands SET MIRR1 POLICY=BESTFITSET MIRR1 REPLACE=DISK30200 117SET MIRR1 REMOVE=DISK30000 ADD Mirrorset Reduce Show Mirrorset Unmirror118CLI Commands SET Multibusfailover119 SET Failover SET Nofailover SET NomultibusfailoverSET Nofailover 120CLI CommandsNodestroyunflushabledata Default DestroyunflushabledataSET Failover SET Multibusfailover SET Nomultibusfailover 121SET Nofailover 122CLI Commands SET NomultibusfailoverSET Failover SET Multibusfailover SET Nofailover 123SET Nomultibusfailover Destroyunflushabledata 124CLI Commands SET RAIDset-name125 SET RAID9 REMOVE=DISK10000 126CLI CommandsSET RAID9 POLICY=BESTFIT ADD Raidset Show Raidsets 127SET RAID9 REPLACE=DISK20100 128CLI Commands SET unit-number129 130CLI Commands MAXIMUMCACHEDTRANSFER=n MAXIMUMCACHEDTRANSFER=32 Default 131132CLI Commands ERRORMODE=NORMAL ERRORMODE=FAILSAFE133 134CLI Commands 135 SET D102 Writeprotect NoreadcacheShow controller Show device-name Show device-type 136CLI CommandsShow Show EMUEMU 137Device-type Storageset-name138CLI Commands Full139 Show Mirrorset Full 140CLI CommandsShow MIRR1 141 Show Thiscontroller Full142CLI Commands Show EMUShutdown controller 143Restart controller Selftest controller 144CLI CommandsShutdown Thiscontroller Unmirror DISK10300 Unmirror145 146CLI Commands ADD Mirrorset Reduce RUN CloneSystem Profiles Device Profile 2System ProfilesStorageset Profile Reduced MembershipEnclosure Template 4System ProfilesController Specifications Physical and Electrical Specifications for Controller 2Controller SpecificationsEnvironmental Specifications Optimum Operating Environmental Specifications4Controller Specifications Table B-3 Maximum Operating Environmental SpecificationsTable B-4 Maximum Nonoperating Environmental Specifications Glossary GL-2Glossary BitCSR GL-4Glossary Data stripingDual-simplex See ECBGL-6Glossary FD ScsiIBR GL-8Glossary OperationMist GL-10Glossary Normal memberPCM GL-12Glossary PTLRAIDset GL-14Glossary RFISCSI-P cable GL-16Glossary Storage subsystemGL-17 SynchronousGL-18Glossary VhdciGL-19 Page ADD Stripeset stripeset-name container- nameN ADD Passthrough passthrough-name scsi-port-target-lun,5-16ADD Raidset RAIDset-name container- nameN ADD Unit unit-number container-name,5-27AddingAUTOSPARE, 4-15SET Failedset Batteryoff Poweroff Batteryon Poweroff2Index Chunksize Initialize CacheupsCapacity CREATEPARTITION, 5-49INITIALIZE Lostdata4Index SET MULTIBUSFAILOVER, 5-118SET NofailoverPage Cylinders CREATEPARTITION, 5-49INITIALIZE 6IndexCopy Destroyunflushabledata SET Nofailover SET Nomultibusfailover Dilx Disableaccesspath ADD Unit8Index DisksECB Enableaccesspath ADD UnitErrormode Index ADD Disk NosaveconfigurationSaveconfiguration Membership PTL SCSI-location,5-68unit-number,5-68UNITSMaximumcachedtransfer ADD Unit SET mirrorset-name,5-113MembershipINVALIDCACHE, 5-36NODTSUPPORT Nooverridebadflush Poweroff Noautospare SET FailedsetNodeid Nopolicy ADD RAIDSET, 5-20NOPORT1IDNopreferredpath Overridebadflush PoweroffNOPORT2TRANSFERRATEREQUEST ED NoreadcachePORT2ID Show device-type,5-137PathPORT1ID SET controller, 5-98Protocol PreferredpathPrompt Rename old-container-name new-container SET mirrorset-name,5-114SET RAIDset-name,5-125 SET mirrorset-name,5-116RUN program name WRITEPROTECT, 5-133WRITEBACKCACHE PORT1PREFERREDID PORT1TRANSFERRATEREQUESTE DPORT2PREFERREDID PORT2TRANSFERRATEREQUESTE D Passthrough Show storageset-name,5-137SHOW storageset-type,5-137Size Createpartition TRANSFERRATEREQUESTED, 3-49TRANSPORTABLE TRANSFERRATEREQUESTED, 3-49ADD Disk TimeSET controller, 5-99Tip, defined, xix Tools, xx Topology Vtdpy Writeprotect