5. RAID System Configuration
Express5800/E120g-M Maintenance Guide
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Chapter 2 Useful Features
5
)
Specify values for
Virtual Drive Name
,
Virtual Drive Size
,
Virtual Drive Size Unit
,
Disk
WC
, and
Read Ahead
.
5-1.
Virtual Drive Name
: Specify the name of the virtual drive. (Optional)
5-2.
Virtual Drive Size
: Specify the capacity of the virtual drive.
5-3.
Virtual Drive Size Unit
: Specify the unit (MB/GB/TB) used for
Virtual Drive Size
.
5-4.
Disk WC
: Specify the Disk Write Cache policy.
Parameter
Remarks
Enable* Write
back
Disable Write
through
* Recommended
* For this server, Setting “Enable” is recommended
for good performance. Note, however, that cached
data may be lost at an unexpected power failure.
Selecting “Disable” degrades performance by
approximately 50%, comparing with the “Enable”
setting.
5-5.
Read Ahead
: Specify the Read Ahead setting.
Parameter
Remarks
Disable
Does not perform read ahead.
Enable*
Performs read ahead.
* Recommended