113, MEMBERSHIP=number-of-members | Compaq HSZ80 guide

5–113

DT_SUPPORT

NODT_SUPPORT

Specifies if disaster tolerant functionality is enabled on this mirrorset. If some members are or may be remote and disaster tolerant functionality is supported, set DT_SUPPORT. If all members are—and intend to remain—local and disaster tolerant functionality is not supported, set NODT_SUPPORT.

If DT_SUPPORT is enabled, the mirrorset has the following restrictions: NOPOLICY is enforced and NOWRITEBACK_CACHE is enforced.

If NODT_SUPPORT is enabled and any of the members have REMOTE set, then the command will fail with an error.

NOTE: This command will fail if changing the setting while the mirrorset is in use by a higher level.

MEMBERSHIP=number-of-members

Sets the nominal number of mirrorset members to the number you specify for the number-of-membersvalue. A maximum of six members can be specified.

NOTE: No other switches can be set when you specify the MEMBERSHIP switch.

If you increase the number of members and specify a replacement policy with the POLICY switch, the controller automatically adds disk drives from the spareset to the mirrorset until the new number of members is reached, or there are no more suitable disk drives in the spareset.

If you increase the number of members and the NOPOLICY switch is specified—it will be specified if DT_SUPPORT is enabled—the REPLACE= disk-nameswitch must be specified to bring the mirrorset up to the new nominal number of members.

You cannot set the nominal number of members lower than the actual number of members. Specify the REMOVE switch to reduce the number of disk drives from the mirrorset.

Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference Guide

Image 299

Compaq HSZ80 manual 113, MEMBERSHIP=number-of-members

Contents

HSZ80 Array Controller ACS Version Page Japan USA Page Chapter Creating Storagesets Vii CLI Commands Viii Appendix a Page Figures Xii Xiii Tables Xiv Compaq Website Telephone Numbers Getting Help Xvi About This Guide PrecautionsElectrostatic Discharge Precautions Component Precaution Xvii Vhdci Cable PrecautionsMaintenance Port Precautions Xviii About This Guide ConventionsTypographical Conventions Xix Special Notices Xx About This Guide Required Tools Xxi Related Publications Xxii About This Guide Revision History General Description 2General Description Typical Installation Basic Building Block 4General Description Basic Building Blocks List Summary of Controller Features Summary of HSZ80 Features 6General Description Bridging the Gap Between the Host and Its Storage Subsystem HSZ80 Array Controller 8General Description HSZ80 Array Controller HSZ80 Array Controller 10General Description Description of Parts Description of Parts 12General Description Parts of the Optional Maintenance Port Cable EMU PVA Operator Control Panel 14General Description Maintenance Port Virtual Terminal Display Fault Management UtilityUtilities and Exercisers Clone Utility Configuration UtilityDisk Inline Exerciser Code Load and Code Patch Utility Device Statistics Utility Field Replacement UtilityChange Volume Serial Number Utility 18General Description Cache Module Memory ConfigurationsCache Module Location of Cache Module Parts 20General Description Caching TechniquesRead Caching Read-Ahead Caching Write-Back Caching Write-Through Caching 22General Description Fault-Tolerance for Write-Back CachingNonvolatile Memory Cache Policies Resulting from Cache Module Failures Cache Policies and Cache Module Status Failover to controller B 24General Description Resulting Cache Policies and ECB Status 26General Description Through caching to its units Less than 28General Description 10 ECB Capacity Based on Memory Size External Cache Battery 30General Description 11 Location of Parts Battery Hysteresis Charging DiagnosticsPage Configuring an HSZ80 Array Controller Introduction Configuration Rules2Configuring an HSZ80 Array Controller Few Tips Configuring an HSZ80 Array Controller 4Configuring an HSZ80 Array Controller Location of Parts for a Single Controller Configuration Configuring a Single Controller 6Configuring 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 SET Failover Copy = Thiscontroller 12Configuring an HSZ80 Array Controller Restart 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 SET Multibusfailover Copy = Thiscontroller 18Configuring an HSZ80 Array Controller Restart 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 UPS Support 24Configuring an HSZ80 Array Controller Setting the PVA Module ID Switch Establishing a Local Connection to Controller 26Configuring an HSZ80 Array Controller PC/Terminal to Maintenance Port Connection This Controller and Other Controller 28Configuring an HSZ80 Array Controller Using Transparent Failover Mode Selecting a Failover Mode 30Configuring an HSZ80 Array Controller Using Multiple-Bus Failover Mode Enabling Mirrored Write-Back Cache Selecting a Cache Mode 32Configuring an HSZ80 Array Controller Fault-Tolerance Host Scsi Bus Setting Scsi Target ID Numbers Device Scsi Bus 34Configuring an HSZ80 Array Controller Using Preferred ID Numbers Page Creating Storagesets 2Creating Storagesets Disk drives 4Creating Storagesets Planning and Configuring Storagesets Creating a Storageset and Device Profile Type of Storageset Creating Storagesets Determining Storage Requirements For Disk Array Technology Choosing a Storageset TypeA Comparison of Different Kinds of Storagesets 8Creating Storagesets Using Stripesets to Increase I/O Performance 10Creating Storagesets Considerations for Planning a Stripeset Distribute Members across Ports 12Creating Storagesets Using Mirrorsets to Ensure Availability Mirrorsets Maintain Two Copies of the Same Data Considerations for Planning a Mirrorset First Mirrorset Members on Different Buses 14Creating Storagesets Using RAIDsets to Increase Performance Availability 16Creating Storagesets Considerations for Planning a RAIDsetPage Striping and Mirroring in the Same Storageset 18Creating Storagesets Considerations for Planning a Striped Mirrorset 20Creating Storagesets Cloning Data for Backup Clone Steps for Duplicating Unit Members 22Creating Storagesets Example Use available device DISK20400size=832317 for member DISK20000size=832317 y,n y ? y 24Creating Storagesets Saving Subsystem Configuration Information to a Single Disk Backing Up Your Subsystem Configuration 26Creating Storagesets Saving Subsystem Configuration Information to a Storageset Controller Displaying the Status of the Save Configuration Feature Cache 28Creating Storagesets Notransportable 30Creating Storagesets Node IDsRestoring Node IDs Page 32Creating Storagesets Assigning Unit Numbers for Host Access to Storagesets LUN Unit Numbering Examples 34Creating Storagesets Creating a Storageset Map 10. Storageset Map Locate devicename Device PTL Addressing Convention within Controller36Creating Storagesets 11. PTL Naming Convention Device port numbers Target Numbers 38Creating Storagesets 13. Locating Devices using PTLs 40Creating Storagesets Planning PartitionsDefining a Partition Guidelines for Partitioning Storagesets Disk Drives 42Creating Storagesets Choosing Switches for Storagesets DevicesEnabling Switches Changing Switches Reconstruction Policy RAIDset SwitchesReplacement Policy 44Creating Storagesets Membership Mirrorset Switches 46Creating Storagesets Copy SpeedRead Source Disaster Tolerance Support 48Creating Storagesets Device SwitchesTransportability Device Transfer Rate Dtsupport Local/Remote50Creating Storagesets Chunk Size Initialize Switches 52Creating Storagesets Increasing the Request Rate 16. Chunk Size Smaller than the Request Size Increasing the Data Transfer Rate 54Creating Storagesets Increasing Sequential Write PerformanceMaximum Chunk Size for RAIDsets Maximum Chunk Sizes for a RAIDset Considerations for Saving the Configuration Save Configuration 56Creating Storagesets Destroy/Nodestroy 58Creating Storagesets Unit SwitchesUnit Switches for Storagesets Configuring Storagesets Adding One Disk Drive at a Time 2Configuring StoragesetsADD Disk DISKnnnn ptl-location switchvalue Adding Disk Drives Configuring a Stripeset Initialize mirrorset-name switch Configuring a Mirrorset4Configuring Storagesets ADD Mirrorset mirrorset-name DISKnnnn DISKnnnn switch Show mirrorset-name ADD Unit unit-number mirrorset-name switch Initialize RAIDset-name switch Configuring a RAIDset6Configuring Storagesets ADD Raidset RAIDset-name DISKnnnn DISKnnnn DISKnnnn switch ADD Stripeset stripeset-name mirrorset1 mirrorset2 Configuring a Striped MirrorsetShow RAIDset-name 8Configuring Storagesets ADD Unit unit-number DISKnnnn switchvalue Configuring a Single-Disk Unit Partitioning a Storageset or Disk Drive 10Configuring Storagesets Show storageset-name Initialize storageset-name switch 12Configuring Storagesets Adding a Disk Drive to the Spareset 14Configuring Storagesets Removing a Disk Drive from the Spareset Enabling Autospare Delete storageset-name 16Configuring StoragesetsDeleting a Storageset Delete unit-number Changing Device Switches Changing Switches for a Storageset or DeviceDisplaying the Current Switches Changing RAIDset and Mirrorset Switches 18Configuring Storagesets Changing Initialize SwitchesChanging Unit Switches Enabling and Disabling the CCL Configuring with the Command Console LUN Finding the CCL Location SCSI-2 ModeSCSI-3 Mode 20Configuring Storagesets Adding Storage Units with the CCL Troubleshooting with the CCL 22Configuring Storagesets Host Modes Configuring Units with Multiple Hosts IBM AIX 24Configuring Storagesets Setting Host Modes Designating the Port Transparent Failover Mode26Configuring Storagesets Accessing Units on a Given Port Designating the Host Scsi ID Number 28Configuring Storagesets Scsi ID Designating the Port and Designating the Host Scsi ID Number 30Configuring Storagesets SET this PORT1ID = SET this PORT2ID = 32Configuring Storagesets Multiple-Bus Failover Mode Assigning Units through Multiple Host Adapters 34Configuring Storagesets Moving a Storageset from one Subsystem to Another Moving Storagesets ADD Disk disk-name PTL-location 36Configuring StoragesetsLocate disk-name Delete disk-name ADD Unit unit-number storageset-name ADD storageset-name disk-name disk-name Move disk drives to their new location 38Configuring Storagesets CLI Commands CLI Overview Using the CLICommand Overview 2CLI Commands SET Thiscontroller ? Entering CLI CommandsGetting Help Unit Naming Recall and Edit Command Keys4CLI Commands Unit Number Changing the CLI Prompt Command Syntax6CLI Commands Command parameter Switches Parameters ADD DiskSyntax Remote Switches8CLI Commands Transportable ADD Disk DISK40200 4 2 0 Transportable TRANSFERRATEREQUESTED=20MHZ DefaultTRANSFERRATEREQUESTED=ASYNCHRONOUS TRANSFERRATEREQUESTED=10MHZ TRANSFERRATEREQUESTED=5MHZ ADD Disk DISK200 2 0 0 Remote 10CLI CommandsSee also Initialize DISK20000 2 0 ADD Unit D199 DISK20000 COPY=FAST ADD Mirrorset POLICY=BESTFIT 12CLI CommandsPOLICY=BESTPERFORMANCE Default Dtsupport Nodtsupport READSOURCE=ROUNDROBIN READSOURCE=disk-name READSOURCE=LEASTBUSY Default Initialize MIRR1 ADD Unit D104 MIRR1 14CLI CommandsADD Mirrorset MIRR1 DISK10000 DISK20100 DISK30200 Show Mirrorsets Show Storagesets Unmirror ADD Disk ADD UnitInitialize Mirror Reduce ADD Passthrough passthrough-name scsi-port-target-lun 16CLI CommandsADD Passthrough Parameter ADD Passthrough TAPE20300 2 3 ADD Unit P100 TAPE20300 Show passthrough-name 18CLI CommandsShow Devices Show Passthrough RAIDset-name ADD Raidset RECONSTRUCT=FAST 20CLI CommandsRECONSTRUCT=NORMAL Default Initialize RAID8 Noreduced DefaultReduced ADD Raidset RAID9 DISK10000 DISK20100 DISK30200 SET Raidset Show Raidset 22CLI CommandsADD Unit D70 RAID8 ADD Raidset RAID6 DISK10300 DISK20400 DISK30200 Reduced Disk-name ADD SparesetADD Spareset DISK20200 ADD Spareset DISK30300 Delete Spareset Show Spareset Show Storagesets Container-name1 container-name2 container-nameN 24CLI CommandsADD Stripeset Stripeset-name Initialize STRIPE1 ADD Unit D103 STRIPE1 ADD Stripeset STRIPE1 DISK10000 DISK20100 DISK30200 Initialize Show Storageset Show Stripeset 26CLI CommandsADD Unit ADD Mirrorset Unit-number ADD UnitADD Unit unit-number container-name 28CLI Commands ADD Unit Switches for StoragesetsPage PARTITION=partitionnumber 30CLI CommandsMAXIMUMCACHEDTRANSFER=32 Default MAXIMUMCACHEDTRANSFER=n Nopreferredpath Default Noreadaheadcache Readcache DefaultReadaheadcache Default Noreadcache Nowritebackcache 32CLI CommandsNorun Nowriteprotect ADD Unit D102 DISK10000 PREFERREDPATH=THISCONTROLLER Show Units 34CLI CommandsCreatepartition Delete unit-number SET unit-number Clearerrors Clearerrors Clearerrors Clearerrors Clearerrors CLIClearerrors CLI Clearerrors CLI Controller Clearerrors controller Invalidcache36CLI Commands Examples Device-name Clearerrors device-nameUNKNOWN38CLI Commands Clearerrors DISK30000 Unknown See also Clearerrors D103 Lostdata Clearerrors unit-numberLOSTDATA40CLI Commands See also Unwriteabledata Clearerrors unit-number42CLI Commands Clearerrors D103 Unwriteabledata See also Configuration Restore Configuration Save Initialize Configuration Reset44CLI Commands Configuration Reset Configuration Restore Configuration Restore Configuration Reset Configuration Save Initialize 46CLI Commands Configuration Reset Configuration Restore Initialize Configuration Save SIZE=percent 48CLI CommandsCreatepartition Createpartition container-name SIZE=percent CAPACITY= CYLINDERS= HEADS= SECTORSPERTRACK= Destroy Partition Show 50CLI Commands Delete STRIPE1 Delete DISK10000 Delete RAID9 52CLI CommandsDelete Failedset Delete Spareset Unmirror SET Failedset Show Failedset Delete FailedsetDelete Failedset DISK20200 ADD Spareset Show Spareset Delete Spareset54CLI Commands Delete Spareset DISK20300 Delete D103 Delete unit-number Delete Failedsets Delete Sparesets Destroypartition 56CLI CommandsADD Unit Clearerrors Lostdata Partition-number DestroypartitionDestroypartition container-name PARTITION=partition-number Delete D102 Destroypartition RAID9 PARTITION=2 58CLI Commands RUN DirectoryDirectory Help 60CLI CommandsHelp Help Your options are SET ? Initialize container-name 62CLI CommandsInitialize CHUNKSIZE=DEFAULT Default CHUNKSIZE=n Nosaveconfiguration Default 64CLI CommandsDestroy Default Saveconfiguration Show Devices Full Initialize DISK10000 Saveconfiguration Reduce DISK40400 Initialize DISK40400 Nodestroy 66CLI Commands ALL CancelLocate Locate parameter Units 68CLI CommandsDisks PTL SCSI-location Locate Disks Locate DISK10000 Locate CancelLocate D102 Mirror disk-name mirrorset-name 70CLI CommandsMirror POLICY=BESTFIT POLICY=BESTPERFORMANCE Nopolicy Default 72CLI Commands ADD Mirrorset Reduce Show Mirrorsets Unmirror Overridebadflush Poweroff74CLI Commands Battery on SECONDS=nn Poweroff Switch Settings Poweroff SECONDS=10 76CLI Commands Reduce Disk-name1 disk-name2 disk-name3 78CLI CommandsReduce disk-name1 disk-name2 disk-name3 Show Mirrorsets Show STRIPE1 SET mirrorset-name 80CLI CommandsADD Mirrorset RUN Clone Show Mirrorset New-container-name RenameRename old-container-name new-container-name Old-container-name Rename DISK10000 Mydisk Show Disks 82CLI Commands Restart controller IgnoreerrorsNoignoreerrors Default Restart Othercontroller 84CLI CommandsImmediateshutdown Restart Thiscontroller Retryerrors D103 Unwriteabledata Retryerrors unit-number Program-name 86CLI CommandsRUN RUN program-namePage RUN Dilx 88CLI Commands Selftest controller Selftest controller Restart controller Shutdown controller 90CLI CommandsSelftest Othercontroller Ignoreerrors Selftest Thiscontroller Thiscontroller SET controller SwitchesSET controller 92CLI Commands Cacheups CACHEFLUSHTIMER=n CACHEFLUSHTIMER=10 DefaultNocacheups Default Allocationclass HOSTFUNCTION=mode HOSTFUNCTION=ID,mode 94CLI CommandsCommandconsolelun Nocommandconsolelun Default NODEID=nnnn-nnnn-nnnn-nnnn checksum Mirroredcache 96CLI CommandsNOPORT1ID NOPORT2IDPage NOPORT2PREFERREDID 98CLI CommandsNOPORT1PREFERREDID TERMINALPARITY=ODD TERMINALPARITY=EVEN SCSIVERSION=SCSI-2 DefaultTERMINALSPEED=baudrate TERMINALSPEED=9600 Default SCSIVERSION=SCSI-3 Maximum SCSI-Bus Lengths for Given Data Transfer Rate 100CLI Commands Show Thiscontroller Show Othercontroller 101SET Othercontroller PROMPT=CONTROLLER B SET Thiscontroller PORT1ID=2,5 SET device-name 102CLI Commands 103 SET DISK10300 Remote 104CLI CommandsSET DISK20000 TRANSFERRATEREQUESTED=5MHZ SET DISK10300 Transportable SET EMU SET EMU105 FANSPEED=HIGH EMU Set Point Temperatures106CLI Commands FANSPEED=AUTOMATIC Default SET EMU FANSPEED=HIGH 107SET EMU SENSOR2SETPOINT=34 Autospare Noautospare 108CLI CommandsSET Failedset SET Failedset SET Failedset Autospare 109SET DISK10000 Transportable Init DISK10000 Thiscontroller Othercontroller 110CLI CommandsSET Failover SET Multibusfailover SET Nofailover SET Nomultibusfailover 111SET Failover COPY=THISCONTROLLER SET mirrorset-name 112CLI Commands MEMBERSHIP=number-of-members 113 REPLACE=disk-name 114CLI CommandsREMOVE=disk-name 115 SET MIRR1 POLICY=BESTFIT 116CLI Commands ADD Mirrorset Reduce Show Mirrorset Unmirror 117SET MIRR1 REMOVE=DISK30000 SET MIRR1 REPLACE=DISK30200 SET Multibusfailover 118CLI Commands SET Failover SET Nofailover SET Nomultibusfailover 119 Destroyunflushabledata 120CLI CommandsNodestroyunflushabledata Default SET Nofailover SET Failover SET Multibusfailover SET Nomultibusfailover 121SET Nofailover SET Nomultibusfailover 122CLI Commands SET Failover SET Multibusfailover SET Nofailover 123SET Nomultibusfailover Destroyunflushabledata SET RAIDset-name 124CLI Commands 125 SET RAID9 REMOVE=DISK10000 126CLI CommandsSET RAID9 POLICY=BESTFIT ADD Raidset Show Raidsets 127SET RAID9 REPLACE=DISK20100 SET unit-number 128CLI Commands 129 130CLI Commands 131 MAXIMUMCACHEDTRANSFER=n MAXIMUMCACHEDTRANSFER=32 Default ERRORMODE=NORMAL ERRORMODE=FAILSAFE 132CLI Commands 133 134CLI Commands SET D102 Writeprotect Noreadcache 135 Show EMU 136CLI CommandsShow Show controller Show device-name Show device-type Storageset-name 137Device-type EMU Full 138CLI Commands 139 Show Mirrorset Full 140CLI CommandsShow MIRR1 Show Thiscontroller Full 141 Show EMU 142CLI Commands 143 Shutdown controller Restart controller Selftest controller 144CLI CommandsShutdown Thiscontroller Unmirror DISK10300 Unmirror145 ADD Mirrorset Reduce RUN Clone 146CLI Commands System Profiles 2System Profiles Device Profile Reduced Membership Storageset Profile 4System Profiles Enclosure Template Controller Specifications 2Controller Specifications Physical and Electrical Specifications for Controller Optimum Operating Environmental Specifications Environmental Specifications 4Controller Specifications Table B-3 Maximum Operating Environmental SpecificationsTable B-4 Maximum Nonoperating Environmental Specifications Glossary Bit GL-2Glossary CSR Data striping GL-4Glossary See ECB Dual-simplex FD Scsi GL-6Glossary IBR Operation GL-8Glossary Mist Normal member GL-10Glossary PCM PTL GL-12Glossary RAIDset RFI GL-14Glossary SCSI-P cable Storage subsystem GL-16Glossary Synchronous GL-17 Vhdci GL-18Glossary GL-19 Page ADD Unit unit-number container-name,5-27Adding ADD Passthrough passthrough-name scsi-port-target-lun,5-16ADD Raidset RAIDset-name container- nameN ADD Stripeset stripeset-name container- nameN AUTOSPARE, 4-15SET Failedset Batteryoff Poweroff Batteryon Poweroff2Index Lostdata CacheupsCapacity CREATEPARTITION, 5-49INITIALIZE Chunksize Initialize SET MULTIBUSFAILOVER, 5-118SET Nofailover 4IndexPage Cylinders CREATEPARTITION, 5-49INITIALIZE 6IndexCopy Destroyunflushabledata SET Nofailover SET Nomultibusfailover Disks Disableaccesspath ADD Unit8Index Dilx ECB Enableaccesspath ADD UnitErrormode Index ADD Disk NosaveconfigurationSaveconfiguration SET mirrorset-name,5-113Membership PTL SCSI-location,5-68unit-number,5-68UNITSMaximumcachedtransfer ADD Unit Membership Nopolicy ADD RAIDSET, 5-20NOPORT1ID Nooverridebadflush Poweroff Noautospare SET FailedsetNodeid INVALIDCACHE, 5-36NODTSUPPORT Noreadcache Overridebadflush PoweroffNOPORT2TRANSFERRATEREQUEST ED Nopreferredpath PORT2ID Show device-type,5-137PathPORT1ID SET controller, 5-98Protocol PreferredpathPrompt SET mirrorset-name,5-116 SET mirrorset-name,5-114SET RAIDset-name,5-125 Rename old-container-name new-container RUN program name WRITEPROTECT, 5-133WRITEBACKCACHE PORT1PREFERREDID PORT1TRANSFERRATEREQUESTE DPORT2PREFERREDID PORT2TRANSFERRATEREQUESTE D Show storageset-name,5-137SHOW storageset-type,5-137 Passthrough Size Createpartition TRANSFERRATEREQUESTED, 3-49TRANSPORTABLE TRANSFERRATEREQUESTED, 3-49ADD Disk TimeSET controller, 5-99Tip, defined, xix Tools, xx Topology Vtdpy Writeprotect