NEC Express5800 Series Maintenance Manual page 122

Chapter 2 Useful Features
(d) Detailed setting
Placing a cursor on "Advanced" and pressing the <Enter> key displays the "Create Virtual Drive-Advanced"
screen. Detailed settings of the Virtual Drive is allowed on this screen. For parameters, refer to the following
table.
Create Virtual Drive-Advanced
Setting item
Strip Size
Read Policy
Write Policy
IO Policy
Drive Cache Policy
Initialize
Configure
HotSpare
Disable BGI
By selecting "OK" after completion of all the settings, the Virtual Drive is created. Selecting "CANCEL" cancels
the Virtual Drive creation.
Only the following mode is allowed for Write Policy.
Write Write Through
Policy
122
Parameter (initial value is in type.)
64 KB
Normal
This RAID controller supports Write
Through mode only.
Direct
Unchanged / Enable / Disable
[ ] (Disable) / [X] (Enable)
[ ] (Disable) / [X] (Enable)
[ ] (Disable) / [X] (Enable)
Write Through
In this mode, the cache memory is not used when writing. This setting features
the highest safety and security from the viewpoint of the data save. However, the
writing performance is inferior to the Write Back setting.
Express5800/B120f Maintenance Guide
4. RAID System Configuration
Remarks
-
-
Write Through: Write Through
-
Recommended setting value: Disable
Sets whether or not to perform the Initialize after
creating the Virtual Drive.
Recommended setting value: Disable (Unchecked)
Unsupported.
Unsupported.