ATTO Technology S-Class manual RAID Level, Sled-based versus disk-based

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6.2 RAID Level 0

The Diamond Storage Array can be set up into RAID Level 0 (striping) groups to allow it to read and store data at a higher transfer rate. QuickRAID0, a CLI command, allows you to set up the system as if it were a single drive instead of separate drives.

 

CAUTION

 

 

of the same RAID group (LUN). Removing one

 

 

 

sled will not affect other LUNs.

 

 

 

configuration causes all

 

Setting RAID

Drive-basedQuickRAID0 designates each

 

previous drive data on the Diamond

 

Storage Array to be erased. Make sure all

drive on a sled as a either partner 1 or partner 2.

 

information is backed up before setting up

Stripe groups are made by combining all partners

 

RAID groups.

designated as 1 together, and all partners

RAID Level 0 groups provide data that is striped

designated as 2 together. Removing one sled will

across several drives. The QuickRAID0

affect more than one LUN because each partner

command, accessed through the CLI or the

will belong to a different LUN.

ExpressNAV interface, sets up the Diamond

To set up RAID Level 0 groups

Storage Array into evenly-sized RAID Level 0

stripe groups. Each stripe group is a virtual drive

1 Connect to the array via the RS-232 port or the

named with its own LUN (logical unit number).

optional Ethernet management services card

With a fully populated array, RAID 0 may be

(refer to Accessing the Array on page 17). You

should now be in CLI.

 

configured as 1, 2, 3, 4, 6, or 12 LUNs. If you set

2 Continue with the CLI or access the RAID page

up RAID0 1, all 24 drives are configured as a

of the ExpressNAV interface (refer to ATTO

single stripe group. You may also configure two

ExpressNAV: Browser-based Interface on page 25).

LUNs of 12 drives each, three LUNs of eight

Note

 

 

drives each, four LUNs of six drives each, six

 

 

Because ExpressNAV pages take you through

LUNs of four drives each and 12 LUNS of two

this process easily, the following instructions

drives each. (See Exhibit 6.2-1). The

are based on the CLI commands. Use these

QuickRAID0 command assumes there are 24

instructions as a guide in ExpressNAV.

drives available.

3 QuickRAID0 options are 0, 1, 2, 3, 4, 6 and 12

 

 

 

 

RAID groups, sled-based or drive-based. The

Sled-based versus disk-based

number indicates the number of RAID groups.

RAID Level 0 can be configured one of two ways,

Sled or drive indicates the way you want the

sled-based or disk-based. The default is sled-

array striped. The QuickRAID0 command will

based.

divide the total number of drives in the same

array equally by the number called out in the

Sled-basedUse sled-based if an external RAID

command. Type

 

 

controller controls the Diamond Storage Array to

set QuickRAID0 [01234612]

ensure that both drives on a sled will be members

[DRIVESLED]

 

 

 

 

 

 

 

4 The array will update

 

An exam ple of RAID 0 configuration (QuickRAID0 4): 2 or m ore physical drives

 

NVRAM. The Ready*

 

into 1 or m ore virtual drives

 

 

displays.

 

RAID 0 subsystem exam ple:

 

 

 

 

5

Type

 

4 virtual devices

 

 

 

 

 

 

 

SaveConfiguration.

 

 

 

24 physical drives

6

Type

 

 

 

 

FirmwareRestart to

 

 

 

 

 

 

 

 

 

 

 

 

reboot the array.

 

 

 

 

 

 

 

53

 

 

 

 

 

ATTO Technology Inc. Diamond Storage Array Installation and Operation Manual

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Contents Diamond Storage Array Class Page Page Contents In-band CLI Over the Fibre Channel Serial Port Configuration Commands Configuring Drives RAID Interleave Parameters Appendix D Specifications Vii Appendix E Warranty ViiiPreface Atto Technology, IncPage Diamond Storage Array features Diamond Storage Array Product OverviewFibre Channel model Scsi modelAdxt Powers ATA to New Levels Diamond Storage Array Technical OverviewATA Interface Engine AIE The interface to each Installation Instructions Physical setupSet up the Ethernet connection Connect to EthernetSet up RAID configuration Floor model ComponentsRack mount Components Physical Set Up Spaced rail pairs in some rackmount cabinetsRack mount cabinets with stationary shelf or tray Sliding shelf or tray type systems should neverGeneral instructions Autoconfiguration Connecting a Fibre Channel ArrayManual configuration Fibre Channel connections Connecting a Scsi Array To connect a Scsi arrayBus speed, MB/sec Bus width Max. bus lengths Max. device BitsScsi connections Determining Drive and Sled Designations Physical numberingLogical numbering Numbering conventionsExamples Unique serial number for each LUNRAID Level 10 QuickRAID10 The QuickRAID10 RAID Level 5 QuickRAID5 with a fullyAccessing the Array Command Line InterfaceAtto ExpressNAV RS-232 portSnmp Details In-band CLI Over the Fibre ChannelInitiator Host Diamond Array Invalidparameterincdb will be returned Initiator/Host Diamond Storage ArraySerial Port Access Serial port access Ethernet Access Telnet and Snmp Protocols To connect to the Ethernet portTo use Telnet To use SnmpType SaveConfiguration restart to reboot the array Traps are generated for the following situationsAtto ExpressNAV Browser-based Interface Browser compatibilityOpening an ExpressNAV session Navigating ExpressNAVInformation Sidebar ExpressNAV Pages Configuration Clear DataLogical Units RebuildCommand Line Interface Use and Guidance Command Line Interface actions and responsesPage Summary of CLI Commands Command Defaults ExampleCommand Defaults Example General Use Commands General CLI commands Ethernet Commands TelnetTimeout TelnetPasswordTelnetUsername Fibre Channel Configuration Commands FcPortInfo FcPortListFcPortName FcWWNameSerial Port Configuration Commands SerialPortBaudRateSerialPortHandshake SerialPortEchoSerial port CLI commands Diagnostic Commands SledFaultLED TemperatureSMARTData VirtualDriveInfoMaintenance Commands FcScsiBusyStatusMaxEnclTempAlrm MinEnclTempAlrmMaintenance CLI commands Drive Configuration Commands DriveWipe IdeTransferRateLUNState QuickRAID0RestoreModePages RAID5ClearDataRAID5ClearDataStatus RAIDInterleaveExamples, refer to Information Commands Results on Jbod Just a Bunch of Disks Configuring DrivesRAID Level Hot Spare sleds InterleaveEnhancing performance To set up the Jbod configuration JbodJbod RAID Level Sled-based versus disk-basedTo remove RAID Level 0 groups LUNs virtual drive numbersPage Page To set up RAID Level 1 groups Type SaveConfigurationType SaveConfiguration Storage Management To remove RAID groupsTo set up RAID Level 1 with Hot Spare sleds Type set QuickRAID 1To set up RAID Level 5 groups Configuring a fully-populated arrayTo set up one RAID Level 5 group with one Hot Spare sled To set up two RAID Level 5 groups with two Hot Spare sleds Type set QuickRAID5 1 Type SaveConfiguration RestartType set QuickRAID5 2 Type SaveConfiguration Restart LUN Type set QuickRAID5 ALL Type SaveConfiguration Restart Removing RAID groupsTo set up RAID Level 10 groups Type set QuickRAID10 0 1 2To set up RAID Level 10 with Hot Spare sleds Type set QuickRAID10 1 Type SaveConfiguration RestartRebuilding RAID Configurations Set AutoRebuild disabled saveconfiguration restart To synchronize mirrored drives manuallyRAID Interleave Parameters To change the RAID Interleave parameterRAID interleave Hardware Maintenance Maintenance Hot Swap Operating Instructions Disk drivesTo replace a blower assembly Power suppliesBlower assemblies Type set QuickRAID1 Type SaveConfiguration Restart Optional Hot Spare SledTo set up two RAID Level 5 groups with Hot Spare sleds Virtual Drive Hot Spare sledsProcedure Copying DrivesCopy drives Updating firmware using the RS-232 serial port Updating FirmwareCd c\diamond\flash Type put ....imaSystem Monitoring and Reporting Power supply monitoring System fault LED and error codesNumber of blinks Windows 2000 special instructions Error messages TroubleshootingCommand Line Interface messages Specific situations and suggestions If LUNs do not display on the host Type FirmwareRestartResetting Defaults DefaultFactory Default To return to Default settingsCommand Default Reset if default Reset during Chosen Feature Fibre ChannelAppendix B Information Commands Results DriveInfo sled ID drive IDInfo all V80DTESCLUNInfo LUN LunInfoVirtualDriveInfo active planned Virtual Drive ID VirtualDriveInfoSafety compliances EMC specifications Radio and television interferenceFloor mount dimensions Rack mount dimensionsEnvironmental and physical Manufacturer limited warranty Contact Atto Technology, Inc

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