4. RAID System Configuration
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102
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
pack.
Important Although
RAID5
is displayed if three or more Hard Disk Drives are packed,
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.