Virtual Tape, Configuration examples | ATTO Technology VT-Class

7.1 Virtual Tape

When the Diamond-VT is configured as a Virtual Tape, it is divided into several tape volumes based on your choice and the RAID level you choose.

Virtual Tape provides increased performance by reducing the time needed to backup and restore data. Virtual Tape volumes reside on Virtual Drives. The Diamond-VT appears to hosts as a tape library, allowing ISV packages to issue a set of tape library commands to perform backup and restore operations to the Diamond-VT.

The underlying storage used for Virtual Tape is specified using the QuickTape command.

The simplest way to set up Virtual Tape configurations is to use the ExpressNAV interface. See ATTO ExpressNAV: Browser-based Interface on page 23 for more information.

If you use the CLI, the command QuickTape sets up Virtual Tapes using the following format:

set QuickTape [RAID5RAID10] [# tape volumes] [# tape drives] <enabled> <Barcode Prefix>

Hot Spares are not available for all Virtual Tape configurations. You must designate enabled to allow Hot Spare sleds or disabled to forgo Hot Spare sleds. Refer to and Optional Hot Spare Sled on page 50 for more information and examples.

You may specify the first four to six alpha- numeric characters of a tape bar code, used by

tape backup software. The remaining four characters will be entered by the system automatically to identify the tape number.

Note

The maximum number of tape volumes and tape drives for RAID Level 5 is 30.

The maximum number of tape volumes and tape drives for RAID Level 10 is 15.

Configuration examples

RAID Level 10 with Hot Spare sleds

set QuickTape RAID10 15 1 enabled SaveConfiguration Restart

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

RAID Level 5 and no Hot Spare sled

set QuickTape RAID5 30 2

SaveConfiguration Restart

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

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ATTO Technology Inc. Diamond Storage Array Installation and Operation Manual

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ATTO Technology VT-Class manual Virtual Tape, Configuration examples

Contents

Diamond Storage Array VT-Class Page Page Contents Atto ExpressNAV Browser-based Interface ExpressNAV Pages Fibre Channel Configuration Commands Serial Port Configuration CommandsMaintenance Services Commands Diagnostic Commands Drive Management Commands ECC Configuring the Diamond-VT Diagnostics, Upgrade and Maintenance TroubleshootingResetting Defaults Virtual Tape Appendix D Sample Zoning Command Sequences Appendix E Specifications XiiAppendix F Product Safety Xiii Appendix G Part numbers Xiv Appendix H Warranty Preface DisclaimerAtto Technology, Inc Page Diamond-VT features Diamond Storage Array-VT Product Overview Fibre Channel model Scsi model Diamond-VT Technical Overview RS-232Ethernet 400MB/sec Adxt Powers ATA to New Levels ATA Interface Engine AIE The interface to each Installation Instructions Physical setupSet up the Ethernet connection Connect to Ethernet Set up Virtual Tape configuration Configuration examplesConnect to Ethernet, on page 5, follow RAID Level 10 with Hot Spare sleds Diamond-VT Components Floor model Rack mount model Diamond-VT Physical Setup Floor ModelRack Mount Physical setup Connecting a Fibre Channel Array AutoconfigurationManual configuration Fibre Channel connections Connecting a Scsi Array To connect the Scsi Diamond-VTBus speed, MB/sec Bus width Max. bus lengths Max. device Bits Scsi connections Accessing the Diamond-VT Command Line InterfaceAtto ExpressNAV RS-232 port Snmp In-band CLI Over Fibre Channel DetailsInitiator Host Diamond-VT Initiator/Host Diamond-VT Serial Port Access Serial port access Ethernet Access Telnet and Snmp Protocols To connect to the Ethernet portTo use Telnet To use Snmp Traps are generated for the following situations Atto ExpressNAV Browser-based Interface Navigating ExpressNAVBrowser compatibility Reset button Parameter name Submit button ExpressNAV Pages Tape Volumes ConfigurationLogical Units Partitions CLI Interface via ASCII-based Commands SaveConfiguration commandReady Return type/mode Return format/content Hostname Summary of CLI Commands Command Defaults Example CLI index Zoneaddhost zone1 General Use Commands Ethernet Commands SNMPUpdates TelnetPasswordTelnetTimeout SNMPTraps Fibre Channel Configuration Commands FcPortList FcPortNameFcScsiBusyStatus FcWWName Serial Port Configuration Commands SerialPortBaudRateSerialPortHandshake SerialPortEcho Maintenance Services Commands Diagnostic Commands PowerAudibleAlarm SledFaultLEDTapeVolumeInfo RAID5ClearDataStatus Drive Management Commands DriveWipe LUNStateIdeTransferRate IdeWriteCache RAID5ClearData RAIDInterleaveRAIDHaltRebuild RAIDManualRebuild RestoreModePages TapeVolumeBlockSizeRebuildPriority TapeWriteProtect ZoneClearAll ZoneCreateZoneDelete ZoneRemoveDevice CLI configure drives Configuring the Diamond-VT Virtual Tape VolumesRAID Level Hot Spare sleds Interleave Enhancing performance Virtual Tape To set up RAID Level 10 with Hot Spare sleds Optional Hot Spare Sled Planned configuration is a work-in-process ZonesPrinciples of Zoning Device portion defines the LUNs Factors to consider Status and Sense DataType ZoneInfo Configuring Zoning To create a zoneTo remove zones To change current zones Errors Zone definition tables The Zone commands Updating Firmware Updating firmware via the RS-232 serial portUpdating firmware via the optional Ethernet card Cd c\diamond\flash Type put ....ima Diagnostics, Upgrade and Maintenance Power On Self Test Post Each timeRS-232 Monitoring Port and CLI One tool to Ethernet Monitoring Port and CLI If the optional Power Supply Monitoring The Diamond-VT System Fault LED and Error Codes If a serious25C 32C 35C 40C Disk Drive Activity and Disk Fault LEDs Each Monitoring, reporting Troubleshooting Windows 2000 special instructions Error MessagesCommand Line Interface messages Specific situations and suggestions If a power supply fails If you can’t access the Diamond-VT CLI via EthernetIf you cannot read or write to the Diamond-VT Type FirmwareRestart in CLI Resetting Defaults Factory DefaultDefault Return to Default settings Command Default Rebuilding RAID Level 5 and 10 Configurations To synchronize mirrored drives manually Hardware Maintenance Hardware maintenance Hot Swap Operating Instructions Disk Drives Power Supplies To replace a blower assemblyBlower Assemblies Appendix a Glossary Fibre Channel technologySAN technology Scsi protocol Appendix Feature Appendix B ATA Disk TechnologyFibre Channel Appendix C LunInfo for a Jbod setup LunInfo PartitionInfo active 59 TapeVolumeInfo ZoneInfo Viii Appendix D Sample Zoning Command Sequences First time configuration after downloadSimple configuration Symmetric Model Asymmetric Model ZoneClearAll ZoneCreate zone1ZoneAddPort zone1 ZoneCreate zone2 ZoneAddPort zone2 ZoneCreate zone3 Combined Symmetric/Asymmetric Model Appendix E Specifications Rack Mount DimensionsFloor Mount Dimensions Environmental and physical Appendix F Product Safety Safety compliancesEMC specifications Radio and television interference Appendix G Part numbers Description All models Appendix H Warranty Manufacturer limited warrantyContact Atto Technology, Inc