HP Smart Array 6400 Series Controllers Support Guide, September 2007

The following example deletes all the spare drives of logical drive 0 at once:
# saconfig /dev/ciss7 -D 0 -s all
All spare drives are deleted from logical drive 0
Changing the Rebuild Priority of a Logical Drive
Use the saconfig /dev/cissX -r <low | medium | high> command to set the rebuild
priority of logical drives. For example:
# saconfig /dev/ciss7 -r high
In this example, the rebuild priority is set to high for the logical drives under controller ciss7.
Specifying the Percentage of Cache Used for Read Caching
Use the saconfig /dev/cissX -C <read_caching_percentage> command to specify
a percentage of cache to be used exclusively for read caching. For example:
# saconfig /dev/ciss7 -C 100
Read cache percentage changed to 100%
You can set the <read_caching_percentage> to 0, 25, 50, 75, or 100 percent of the cache.
Auto-Fail Missing Disks At Boot
Use the saconfig /dev/cissX -F on|off command to enable or disable auto-fail of missing
disks at boot. For example:
# saconfig /dev/ciss7 -F on
Auto-fail missing disks enabled
Creating Multiple Logical Drives in an Array
To create multiple logical drives in an array, use the command:
saconfig /dev/cissX -R <RAID level> -p <Channel:Target> [-p
<Channel:Target> ... ] -c <capacity in GB>
For example:
# saconfig /dev/ciss5 -R ADG -p 2:0 -p 2:1 -p 2:2 -p 2:3 -c 10
Logical drive 0 created
Rebuild priority is set to High
NOTE: If you do not specify a capacity using -c <capacity in GB>, the maximum capacity
or the remaining capacity in the array will be applied to the logical drive.
Deleting a logical drive from an array that contains multiple drives can leave “gaps” within the
array. To prevent gaps, logical drives should be deleted from an array in the reverse of the order
in which they were created. For example, if LD#0, LD#1, and LD#2 were sequentially created in
an array, LD#2 should be deleted first, LD#1 should be deleted second, and LD#0 should be
deleted last.
Performing RAID Level Migration
To perform a migration of an existing logical drive to a different RAID level, use the command:
saconfig /dev/cissX -M <Logical drive #> -R <RAID level> [-S <Stripe
size (KB)>]
For example:
# saconfig /dev/ciss5 -M 0 -R 5
Logical drive 0 migrated from ADG to 5
Migrating a logical drive to a different RAID level does not change its capacity.
52 Configuring Smart Array 6400 Series Controllers