5. RAID System Configuration
Express5800/R120f-1E Maintenance Guide
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Chapter 2 Useful Features
(2)
Units
:
Specify the unit (MB, GB, or TB) used in the
Size
field.
(3)
Size
:
Specify the size of the virtual drive. Up to eight virtual drives can be created per RAID
Controller. You cannot specify the size for RAID10.
(4)
DWC
(Disk Write Cache):
Specify the method for writing cached data to the disk.
Parameter
Remarks
Off
Write through
On*
Write back
* Recommended
Note
For this server, write back is recommended for good performance. Note, however, that
cached data may be lost at an unexpected power failure. Selecting write through degrades
performance by approximately 50%.
(5)
RA
(Read Ahead):
Specify whether to use read-ahead.
Parameter
Remarks
Off
Does not perform read ahead.
On*
Performs read ahead.
* Recommended
(6)
Span
:
Specify the span.
This server does not use this feature.
8. When all settings are completed, select
Accept
, and then press the <Enter> key.
9. Press the <Esc> key, and select
Yes
for the confirmation message "Save Configuration?"
The configuration is saved.
10. Press the <Esc> key to return to the TOP menu screen.
11. On the TOP menu, select
Objects
,
Virtual Drive
, and then
View/Update Parameters
to check the
specified virtual drive information.
12. Press the <Esc> key to return to the TOP menu screen, and then select
Initialize
.
13. On the
Virtual Drives
screen, move the cursor to the virtual drive to be initialized, and then press the
<Space> key.
The virtual drive is selected.
14. Press the <F10> key.
15. Select
Yes
to start initialization.
When the progress bar on the
Init Of VD Is In Progress
screen indicates 100%, initialization is
completed. Press the <Esc> key to return to the TOP menu.
16. For RAID1, check the consistency on the virtual drive that has been initialized.
See Chapter 2 (5.3.4 Check Consistency) for details.
17. Press the <Esc> key to return to the TOP menu and exit LSI Software RAID Configuration Utility.
