NEC EXP803 Maintenance Manual page 126

Chapter 2 Useful Features
(2) Units:
(3) Size:
Controller. You cannot specify the size for RAID10.
(4) DWC (Disk Write Cache):
Parameter
Off
On*
Note
(5) RA (Read Ahead):
Parameter
Off
On*
(6) 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.
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Specify the unit (MB, GB, or TB) used in the Size field.
Specify the size of the virtual drive. Up to eight virtual drives can be created per RAID
Specify the method for writing cached data to the disk.
Remarks
Write through
Write back
* Recommended
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%.
Specify whether to use read-ahead.
Remarks
Does not perform read ahead.
Performs read ahead.
* Recommended
Specify the span.
Express5800/R120f-1E Maintenance Guide
5. RAID System Configuration