Hp StorageWorks 2000 Family Modular Smart Array CLI reference guide (481600-002, May 2008)

Chapter 3 Command Descriptions 113
To set the cache redundancy mode for the storage system:
set cache-parameters independent enable|disable
Parameter Description
volume Specifies the volume by its name or serial
number. For the syntax to use, see “Volume
Syntax” on page 26.
write-policy write-back|
write-through
Optional. Sets the cache policy to either:
• write-back: Write-back caching does
not wait for data to be completely written
to disk before signaling the host that the
write is complete. This is the preferred
setting for a fault-tolerant environment
because it improves the performance of
write operations and throughput.
• write-through: Write-through caching
significantly impacts performance by
waiting for data to be completely written to
disk before signaling the host that the write
is complete. Use this setting only when
operating in an environment with low or
no fault tolerance.
optimization standard|
super-sequential
Optional. Sets the cache optimization mode
to either:
• standard: Used for applications that
read and write small files in random order,
such as transaction-based and database
update applications. Sets the cache block
size to 32 Kbyte.
• super-sequential: Used for
applications that read and write large files
in sequential order, such as video playback
and multimedia post-production video and
audio editing applications. Sets the cache
block size to 128 Kbyte