User`s guide

Configuring Your Server 4-35
6. Press F10 to create virtual drive.
The "Virtual Drives Configure" screen appears. (The figure below shows an example of RAID1 configured with two
hard disk drives.)
7. Select "RAID," "Size", "DWC", "RA", or "Span" by using cursor keys. Then press Enter to confirm the selection and
set each value.
(1) "RAID": Sets RAID level.
Parameter Remarks
0 RAID0
1 RAID1
The selectable RAID level varies depending on the number of hard disk drives that configures 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 Remarks
Off Write through
On *
1
Write back
*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 Remarks
Off Does not perform read ahead.
On *
1
Performs read ahead.
*1 Recommended setting.