IBM System Storage DS3000 Programming Manual page 319

subsystemCount=numberOflogicalDriveGroups
logicalDrivesPersubsystemCount=numberOfLogicalDrivesPersubsystem
hotSpareCount=numberOfHotspares
segmentSize=segmentSizeValue
cacheReadPrefetch=(TRUE | FALSE)]
securityType=(none | capable | enabled)
Parameters
Parameter
driveType
driveMediaType
raidLevel
subsystemWidth
logicalDriveGroupCount
subsystemCount
logicalDrivesPerGroupCount
hotSpareCount
segmentSize
cacheReadPrefetch
Description
The type of disk drives that you want to use for the
storage subsystem. Valid disk drive types are fibre,
SATA, or SAS. The driveType parameter is not
required if only one type of disk drive is in the
storage subsystem.
The type of drive media that you want to use for
the mirror repository subsystem. Valid drive media
are these:
v HDD – Use this option when you have hard
drives in the drive expansion enclosure.
v SSD – Use this option when you have solid state
drives in the drive expansion enclosure.
v unknown – Use if you are not sure what types of
drive media are in the drive expansion enclosure.
v allMedia – Use this option when you want to use
all types of drive media that are in the drive
expansion enclosure.
Use this parameter when you use the
repositoryDriveCount parameter.
You must use this parameter when you have more
than one type of drive media in your storage
subsystem.
The RAID level of the subsystem that contains the
disk drives in the storage subsystem. Valid RAID
levels are 0, 1, 3, 5, or 6.
The number of drives in an subsystem in the
storage subsystem, which depends on the capacity
of the drives. Use integer values.
The number of subsystems in the storage
subsystem. Use integer values.
The number of subsystems in the storage
subsystem. Use integer values.
The number of equal-capacity logical drives per
subsystem. Use integer values.
The number of hot spares that you want in the
storage subsystem. Use integer values.
The amount of data (in KB) that the controller
writes on a single disk drive in a logical drive
before writing data on the next disk drive. Valid
values are 8, 16, 32, 64, 128, 256, or 512.
The setting to turn on or turn off cache read
prefetch. To turn off cache read prefetch, set this
parameter to FALSE. To turn on cache read prefetch,
set this parameter to TRUE.
Chapter 3. Script Commands
3-273