Parameter Description
readCacheEnabled The setting to turn on or turn off the read cache. To turn
on the read cache, set this parameter to TRUE. To turn off
the read cache, set this parameter to FALSE.
writeCacheEnabled The setting to turn on or turn off the write cache. To turn
on the write cache, set this parameter to TRUE. To turn off
the write cache, set this parameter to FALSE.
cacheReadPrefetch 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.
T10PIDisabled The setting to turn on or turn off T10 PI (Protection
Information) for a specific logical drive.
For this parameter to have meaning, your logical drive
must be capable of T10 PI (Protection Information). This
parameter changes a logical drive from one that supports
T10 PI (Protection Information) to a logical drive that
cannot support T10 PI (Protection Information).
To remove T10 PI (Protection Information) from a logical
drive that supports T10 PI (Protection Information), set
this parameter to TRUE. To return a logical drive to
supporting T10 PI (Protection Information), set this
parameter to FALSE.
Note: If you remove T10PI (Protection Information) from
a logical drive, you cannot reset T10 PI (Protection
Information) for that logical drive.
To reset T10 PI (Protection Information) for the data on a
logical drive, from which you removed T10 PI
(Protection Information), perform these steps:
1. Remove the data from the logical drive.
2. Delete the logical drive.
3. Re-create a new logical drive with the properties of
the deleted logical drive.
4. Set T10 PI (Protection Information) for the new
logical drive.
5. Move the data to the new logical drive
addCapacity The setting to increase the storage size (capacity) of the
logical drive for which you are defining properties. Size
is defined in units of bytes, KB, MB, GB, or TB. The
default value is bytes.
addDrives The setting to add new drives to the logical drive. For
high-capacity drive expansion enclosures, specify the
enclosure ID value, the drawer ID value, and the slot ID
value for the drive. For low-capacity drive expansion
enclosures, specify the enclosure ID value and the slot ID
value for the drive. Enclosure ID values are 0 to 99.
Drawer ID values are 1 to 5. Slot ID values are 1 to 32.
Enclose the enclosure ID value, drawer ID value, and the
slot ID value in parentheses. Use this parameter with the
addCapacity parameter if you need to specify additional
drives to accommodate the new size.
3-224 IBM System Storage DS3000, DS4000, and DS5000: Command Line Interface and Script Commands Programming Guide
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