NEC Express5800 series User Manual page 41

4. Set parameters in Virtual Disk Properties appropriately and click [Accept]. Then click
[Next].
[RAID Level]:
Select the RAID level of the array.
[Size (in MB)]:
Set the capacity of the logical drive to be created.
[Volume ID]:
Leave the initial setting value unchanged.
[Volume Name]:
Specify the name of the logical drive.
[Stripe Size]:
Select the unit of data distributed to each hard disk drive configuring RAID out of 8K,
16K, 32K, 64K, and 128K bytes. The default setting is 64K bytes.
LSI Logic Embedded MegaRAID(tm) is always 64K bytes.
[Read Policy]:
Select No Read Ahead, Adaptive Read Ahead, or Always Read Ahead. The default
setting is No Read Ahead.
[Default Write Policy]:
Select either Write Through or Write Back. The default setting is Write Back.
Do not change this setting on "LSI Logic Embedded MegaRAID(tm) ".
NOTES:
A check box of "Use Write Through for failed or missing
battery" was added to [Default Write Policy] since
MSM1.14-02. The default value of "Use Write Through for
failed or missing battery" is the checked state when you
specify "Write Back" in [Default Write Policy]. Please set
the unchecked state in this case. Even if there is a battery
(iBBU), it will be "Write Trough" in the checked state.
Operation 37