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Chapter 2 Useful Features
9） Select values for Virtual Drive Name, Disk WC, and Read Ahead.
9-1. Virtual Drive Name: Specify the name of the virtual drive. (Optional)
9-2. Disk WC: Specify the Disk Write Cache policy.
Parameter
Enable*
Wright back
Disable
Write through
*
For this server, Setting "Enable" is recommended
for good performance. Note, however, that cached
data may be lost at an unexpected power failure.
Selecting "Disable" degrades performance by
approximately 50%, comparing with the "Enable"
setting.
9-3. Read Ahead: Specify the Read Ahead setting.
Parameter
Disable
Does not perform read ahead.
Enable*
Performs read ahead.
Note
For RAID 10, the virtual drive can be created only with the maximum size.
Express5800/E120g-M Maintenance Guide
Remarks
* Recommended
Remarks
* Recommended
5. RAID System Configuration
131
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