Maintenance Manual
4. RAID System Configuration
Express5800/GT110e-S Maintenance Guide
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Chapter 2 Convenient Features
7. Use the cursor keys to move the cursor to RAID, Size, DWC, RA, or Span.
Press the <Enter> key while the target parameter is highlighted to specify its setting.
(1) RAID: Specify the RAID level.
Parameter Remarks
0 RAID0
1 RAID1
10 RAID10
The selectable RAID level varies depending on the number of Hard Disk Drives configuring the disk
array.
Important
Although RAID5 is displayed if three or more Hard Disk Drive
s are
configured, this server does not support RAID5.
(2) Units: Specify the units of the virtual drive capacity specified by Size (MB, GB, or TB).
(3) Size: Specify the virtual drive capacity. Up to eight virtual drives can be created. For RAID10, the
virtual drive capacity cannot be specified.
(4) DWC: Specify the disk write cache.
Parameter Remarks
Off Write through
On* Write back
*Recommended
* Considering the performance, On (write back) is
recommended for this server. Note, however, cache
data might be lost in the case of unexpected power
failure when On is specified.
When Off is selected, the performance is lowered to
50% or less compared with when On is selected.
(5) RA: Specify whether to perform read ahead.
Parameter Remarks
Off Do not perform read ahead
On* Perform read ahead
*Recommended
(6) Span: Specify the span setting.
This parameter is not used for this server.