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ATTO Technology Inc. Diamond Storage Array Installation and Operation Manual
6.0 Copying Drives
Copying drives using the
DriveCopy
CLI command may be necessary on drives in the JBOD
configuration. RAID Level 1 and RAID Level 10 configurations already provide mirroring of drives.
DriveCopy
can create a backup of a drive onto
another drive sled. If one drive fails,
DriveCopy
may be used to copy the data off the remaining
drive on the sled to another drive on another sled.
Once completed, the sled containing the failed
drive may be replaced.
CAUTIONCAUTION
Make sure the destination backup drive
sled does not contain any important data
because it will be completely overwritten
by the
DriveCopy
command.
1Use the
DriveCopy
CLI command (refer to
Drive
Configuration Commands
on page 43) to copy a
drive from the source disk to the destination
disk. Parameters are the sled and drive
numbers of the source and destination drives.
2 The destination drive must be offline: use the
ATADiskState
command to determine if the
destination disk is offline. If you choose the
same source and destination drive, this
command performs a
DriveWipe
.
DriveCopyHalt
stops a
DriveCopy
operation in
progress.
DriveCopyResume
resumes a
DriveCopy
operation that had been stopped.
DriveCopyStatus
displays the status of a
DriveCopy
or
DriveWipe
operation
JBOD configurations:
You may want to copy
drives for backup. However, since several
configurations may be present on a Diamond
Storage Array, you must be confident you are
accessing and overwriting the appropriate drives
and volumes.
RAID Level 1 and RAID Level 10
configurations
should not need to be backed up by copying drives
since these settings already provide mirrored
copies of drives. However, you may copy a drive
to another drive within a RAID Level 1 or RAID
Level 10 system, but the destination drive cannot
contain data you want to save.
You might want to keep an entire group (LUN)
free of data to use as spare drives within the array
system.
RAID Level 0 and RAID Level 5 systems
DriveCopy
may be used to coordinate the
generation of a backup of an entire RAID Level 0
or RAID Level 5 LUN.