ATTO Technology VT-Class Optional Hot Spare Sled, To set up RAID Level 10 with Hot Spare sleds

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7.2 Optional Hot Spare Sled

To maintain array up time with minimal risk of data loss, individual sleds which fail may be replaced with a spare sled.

In most configurations, if a member of a virtual device becomes degraded, you must swap out the faulted sled as defined in Hot Swap Operating Instructions on page 69. If you have not enabled AutoRebuild, you must also start a manual rebuild.

However, Hot Spare sleds may be designated as replacements for faulted sleds without intervention by you or a host.

Each configuration requires a certain number of Hot Spare sleds. These sleds, once designated as Hot Spares, are not available for other use.

•RAID Level 10: 10 drive sleds and two Hot Spare sleds (sleds 11 and 12).

•RAID Level 5: 10 drive sleds and two Hot Spare sleds (sleds 11 and 12)

•RAID Level 5: five drive sleds (sled positions 1 through 5) and one Hot Spare sled (sled 12).

Note

All arrays using RAID level 10 and Hot Spares options must be fully populated.

If a sled becomes degraded and a Hot Spare sled has been designated:

•the Diamond will replace the degraded sled with the Hot Spare sled, simulating a hot swap of a sled with AutoRebuild enabled, without intervention

•any sled with a Faulted drive will not be used. Faulted sleds maintain their faulted status until they are removed and re-inserted or if the system is restarted.

•Hot Spares are handled as sleds, not as individual drives

•the Hot Spare sled replaces the Faulted sled in the Virtual Device

•a rebuild will automatically start after the Hot Spare is switched into the Virtual Device, even if

AutoRebuild is disabled.

•the DriveInfo command will list the number of Hot Spare sleds currently in the system

•you can replace the faulted drive or sled later. However, faulted is a non-persistent state. After a power cycle, the faulted sled will display on the DriveInfo screen as having no type, i.e, the type field will be blank. The sled cannot be accessed but must be removed and replaced. If it is replaced, it will become part of any open Virtual Disk in this order:

1if a Virtual Device is missing a sled or you are hot swapping a sled, the new sled becomes part of the existing Virtual Device.

2if a Hot Spare sled is missing, the new sled will become a Hot Spare sled.

The simplest way to set up Hot Spare sleds is to use the ExpressNAV interface. However, you may use the CLI as follows:

To set up RAID Level 10 with Hot Spare sleds

1Connect to Diamond-VT services (see

Accessing the Diamond-VTon page 15) and use the CLI.

2Type set QuickTape RAID10 15 1 enabled

3Type SaveConfiguration Restart

The Diamond-VT will be configured into RAID Level 10 with one tape drive, 15 tape volumes and two Hot Spare sleds.

To set up RAID Level 5 and Hot Spare sleds

1Type set QuickTape RAID5 30 2 enabled

2Type SaveConfiguration Restart

The Diamond-VT will be configured into RAID Level 5 with two tape drives, 30 tape volumes and two hot spare sleds.

50 Hot swap spare sled

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Contents Diamond Storage Array VT-Class Page Page Contents ExpressNAV Pages Atto ExpressNAV Browser-based InterfaceSerial Port Configuration Commands Fibre Channel Configuration CommandsMaintenance Services Commands Diagnostic CommandsECC Drive Management CommandsDiagnostics, Upgrade and Maintenance Troubleshooting Configuring the Diamond-VTResetting Defaults Virtual TapeAppendix E Specifications Xii Appendix D Sample Zoning Command SequencesAppendix F Product Safety Xiii Appendix G Part numbers Xiv Appendix H WarrantyDisclaimer PrefaceAtto Technology, Inc Page Diamond Storage Array-VT Product Overview Diamond-VT featuresScsi model Fibre Channel modelRS-232 Diamond-VT Technical OverviewEthernet 400MB/secATA Interface Engine AIE The interface to each Adxt Powers ATA to New LevelsPhysical setup Installation InstructionsSet up the Ethernet connection Connect to EthernetConfiguration examples Set up Virtual Tape configurationConnect to Ethernet, on page 5, follow RAID Level 10 with Hot Spare sledsFloor model Diamond-VT ComponentsRack mount model Floor Model Diamond-VT Physical SetupRack Mount Physical setup Autoconfiguration Connecting a Fibre Channel ArrayManual configuration Fibre Channel connections To connect the Scsi Diamond-VT Connecting a Scsi ArrayBus speed, MB/sec Bus width Max. bus lengths Max. device BitsScsi connections Command Line Interface Accessing the Diamond-VTAtto ExpressNAV RS-232 portSnmp Details In-band CLI Over Fibre ChannelInitiator Host Diamond-VT Initiator/Host Diamond-VT Serial Port Access Serial port access To connect to the Ethernet port Ethernet Access Telnet and Snmp ProtocolsTo use Telnet To use SnmpTraps are generated for the following situations Navigating ExpressNAV Atto ExpressNAV Browser-based InterfaceBrowser compatibility Parameter name Submit button Reset buttonExpressNAV Pages Configuration Tape VolumesLogical Units PartitionsSaveConfiguration command CLI Interface via ASCII-based CommandsReady Hostname Return type/mode Return format/contentCommand Defaults Example Summary of CLI CommandsCLI index Zoneaddhost zone1 General Use Commands Ethernet Commands TelnetPassword SNMPUpdatesTelnetTimeout SNMPTrapsFibre Channel Configuration Commands FcPortName FcPortListFcScsiBusyStatus FcWWNameSerialPortBaudRate Serial Port Configuration CommandsSerialPortHandshake SerialPortEchoMaintenance Services Commands Diagnostic Commands SledFaultLED PowerAudibleAlarmTapeVolumeInfo RAID5ClearDataStatusDrive Management Commands LUNState DriveWipeIdeTransferRate IdeWriteCacheRAIDInterleave RAID5ClearDataRAIDHaltRebuild RAIDManualRebuildTapeVolumeBlockSize RestoreModePagesRebuildPriority TapeWriteProtectZoneCreate ZoneClearAllZoneDelete ZoneRemoveDeviceCLI configure drives Virtual Tape Volumes Configuring the Diamond-VTRAID Level Hot Spare sledsEnhancing performance InterleaveVirtual Tape Optional Hot Spare Sled To set up RAID Level 10 with Hot Spare sledsZones Planned configuration is a work-in-processPrinciples of Zoning Device portion defines the LUNsStatus and Sense Data Factors to considerType ZoneInfo To create a zone Configuring ZoningTo remove zones To change current zonesZone definition tables The Zone commands ErrorsUpdating firmware via the RS-232 serial port Updating FirmwareUpdating firmware via the optional Ethernet card Type put ....ima Cd c\diamond\flashPower On Self Test Post Each time Diagnostics, Upgrade and MaintenanceRS-232 Monitoring Port and CLI One tool to Ethernet Monitoring Port and CLI If the optionalSystem Fault LED and Error Codes If a serious Power Supply Monitoring The Diamond-VT25C 32C 35C 40C Disk Drive Activity and Disk Fault LEDs Each Monitoring, reporting Windows 2000 special instructions Error Messages TroubleshootingCommand Line Interface messages Specific situations and suggestionsIf you can’t access the Diamond-VT CLI via Ethernet If a power supply failsIf you cannot read or write to the Diamond-VT Type FirmwareRestart in CLIFactory Default Resetting DefaultsDefault Return to Default settingsCommand Default Rebuilding RAID Level 5 and 10 Configurations To synchronize mirrored drives manually Hardware Maintenance Hardware maintenance Disk Drives Hot Swap Operating InstructionsTo replace a blower assembly Power SuppliesBlower Assemblies Fibre Channel technology Appendix a GlossarySAN technology Scsi protocolAppendix Appendix B ATA Disk Technology FeatureFibre Channel Appendix C LunInfo for a Jbod setup PartitionInfo active 59 LunInfoZoneInfo TapeVolumeInfoViii First time configuration after download Appendix D Sample Zoning Command SequencesSimple configuration Symmetric ModelZoneClearAll ZoneCreate zone1 Asymmetric ModelZoneAddPort zone1 ZoneCreate zone2 ZoneAddPort zone2 ZoneCreate zone3Combined Symmetric/Asymmetric Model Rack Mount Dimensions Appendix E SpecificationsFloor Mount Dimensions Environmental and physicalSafety compliances Appendix F Product SafetyEMC specifications Radio and television interferenceDescription All models Appendix G Part numbersManufacturer limited warranty Appendix H WarrantyContact Atto Technology, Inc
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