Diamond Storage Array Installation, Operations, Maintenance Manual
Table Of Contents
- Preface
- 1.0 Diamond Storage Array Product Overview
- 2.0 Diamond Storage Array Technical Overview
- 3.0 Installation Instructions
- 3.2 Physical Set Up
- 4.0 Determining Drive and Sled Designations
- 5.0 Accessing the Array
- Command Line Interface
- ATTO ExpressNAV
- In-band SCSI over Fibre Channel
- RS-232 port
- Ethernet port
- SNMP
- I/O details
- Browser compatibility
- Opening an ExpressNAV session
- Navigating ExpressNAV
- Exhibit 5.4-1 Atypical page in the ATTO ExpressNAV configuration tool.
- Status
- Ethernet
- SNMP
- Serial Port
- Fibre Channel
- Storage Management
- RAID
- Clear Data
- Logical Units
- Rebuild
- Configuration
- Advanced
- Restart
- Help
- FirmwareRestart
- Help
- RestoreConfiguration
- SaveConfiguration
- SystemSN
- VerboseMode
- EthernetSpeed
- FTPPassword
- IPAddress
- IPDHCP
- IPGateway
- IPSubnetMask
- SNMPTrapAddress
- SNMPTraps
- SNMPUpdates
- TelnetPassword
- TelnetTimeout
- TelnetUsername
- FcConnMode
- FcDataRate
- FcFairArb
- FcFrameLength
- FcFullDuplex
- FcHard
- FcHardAddress
- FcNodeName
- FcPortInfo
- FcPortList
- FcPortName
- FcWWName
- SerialPortBaudRate
- SerialPortEcho
- SerialPortHandshake
- SerialPortStopBits
- AudibleAlarm
- DiamondModel
- DiamondName
- DriveCopyStatus
- DriveInfo
- FcNodeName
- FcPortList
- FcPortName
- Help
- IdentifyDiamond
- Info
- LUNInfo
- SerialNumber
- SledFaultLED
- SMARTData
- Temperature
- VirtualDriveInfo
- FcScsiBusyStatus
- FirmwareRestart
- MaxEnclTempAlrm
- MinEnclTempAlrm
- Temperature
- Zmodem
- ATADiskState
- AutoRebuild
- ClearDiskReservedAreaData
- DriveCopy
- DriveCopyHalt
- DriveCopyResume
- DriveCopyStatus
- DriveInfo
- DriveSledPower
- DriveWipe
- IdeTransferRate
- LUNInfo
- LUNState
- QuickRAID0
- QuickRAID1
- QuickRAID5
- QuickRAID10
- RAID5ClearData
- RAID5ClearDataStatus
- RAIDInterleave
- RAIDHaltRebuild
- RAIDManualRebuild
- RAIDRebuildState
- RAIDRebuildStatus
- RAIDResumeRebuild
- RebuildPriority
- ResolveLUNConflicts
- RestoreModePages
- SledFaultLED
- VirtualDriveInfo
- 6.0 Configuring Drives
- JBOD (Just a Bunch of Disks)
- RAID Level 0
- RAID Level 1
- RAID Level 10
- RAID Level 5
- Interleave
- Hot Spare sleds
- Enhancing performance
- Sled-based versus disk-based
- Exhibit 6.2-1 Sled-based QuickRAID0 stripe groups with LUN designations in a fully populated Array set up as QuickRAID0 6 sled. If sled 6 were to be withdrawn from the array, LUN 3 (grayed boxes) would be unavailable.
- Exhibit 6.2-2 Drive-based QuickRAID0 stripe groups with LUN designations in a fully populated Array set up as QuickRAID0 6 Drive. If sled 6 were to be withdrawn from the array, LUNs 2 and 5 would be unavailable.
- Exhibit 6.2-3 Configurations of a fully populated Diamond Storage Array in RAID Level 0.
- Exhibit 6.3-1 Drive sleds, LUNs and mirror partners in a RAID Level 1 configuration.
- Hot Spare sleds
- Configuring a fully-populated array
- Configuring a partially-populated array
- Removing RAID groups
- Hot Spare sleds
- 7.0 Hardware Maintenance
- 8.0 Copying Drives
- 9.0 Updating Firmware
- 10.0 System Monitoring and Reporting
- RS-232 monitoring port and CLI
- Ethernet monitoring port and CLI
- Power On Self Test (POST)
- Ready LED
- Audible alarm
- Thermal monitoring
- Power supply monitoring
- System fault LED and error codes
- Disk drive activity and disk fault LEDs
- Windows 2000 special instructions
- Error messages
- Specific situations and suggestions
- Default
- Factory Default
- Appendix A ATA Disk Technology
- Appendix B Information Commands Results
- Appendix C Product Safety
- Appendix D Specifications
- Appendix E Warranty
67
ATTO Technology Inc. Diamond Storage Array Installation and Operation Manual
6.7 RAID Interleave Parameters
The interleave size sets the amount of data to be written to each drive in a RAID Level group. This is a
tunable parameter which takes a single stream of data and breaks it up to use multiple disks per I/O
interval.
CAUTIONCAUTION
Changing this parameter causes all
previous drive data on the Diamond
Storage Array to be erased. Make sure you
back up all information before setting up
different interleave sizes.
The default sector interleave set by the
QuickRAID
command is 128 blocks (64k). The CLI
command,
RAIDInterleave
, allows you to change
the size of the sector interleave between RAID
groups. The value depends upon the normal
expected file transfer size. If the normal file
transfer size is large, the interleave value should
be large, and vice versa.
The value entered for the RAIDInterleave
command refers to blocks of data: one block is
equivalent to 512 bytes of data.
To change the RAID Interleave parameter
1 Connect to Diamond Storage Array services via
the RS-232 port or the optional Ethernet
management services card (refer to
Accessing
the Array
on page 17). You should now be in
Command Line Interface.
2 Continue with the CLI or access the RAID page
of the ExpressNAV interface (refer to
ATTO
ExpressNAV: Browser-based Interface
on page 25).
Note
Because the ExpressNAV pages take you
through this process easily, the following
instructions are based on the CLI commands.
Use these instructions as a guide in
ExpressNAV.
RAIDInterleave options are 16, 32, 64, 128, 256
blocks and span. Span is not available for RAID
Level 5.
3 In all RAID levels except RAID Level 5, type
set RAIDInterleave [16|32|64|128|256| span]
For RAID Level 5 type
set RAIDInterleave [16|32|64|128|256]
4 Information displays on the screen while the
array updates NVRAM ending with a Ready
*.
5Type SaveConfiguration.
6Type
FirmwareRestart to reboot the array.
7 Reboot the host computer connected via Fibre
Channel or SCSI to the array.
8 The array is now configured. To verify the
configuration, type
get
RAIDInterleave.