NEC Express5800 User Manual page 101

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7.
Press F10 to create virtual drive.
The "Virtual Drives Configured" screen appears. (The figure below shows an example of
RAID1 configured with two hard disk drives.)
8.
Select "RAID," "Size", "DWC", "RA", or "Span" by using cursor keys. Then press Enter
to fix the selection and set each value.
(1) "RAID": Sets RAID level.
Parameter
0
1
10
The selectable RAID level varies depending on the number of hard disk drives
that configure a pack.
(2) "Size": Sets virtual drive size.
Up to 8 virtual drives can be created per RAID Controller.
(3) "DWC": Sets parameter for Disk Write Cache.
Parameter
Off
1
On *
*1 Recommended setting.
"Write-back On" enables good performance, however, cache data may be lost
at an unexpected power failure. "Write-back Off" reduces performance by
approximately 50%.
(4) "RA": Sets parameter for Read Ahead.
Parameter
Off
On
Remarks
RAID0
RAID1
Striping of RAID1
Remarks
Write through
Write back
Remarks
Does not perform read ahead.
Performs read ahead.
Configuring Your Server 4-35

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