User`s guide

4-82 Configuring Your Server
Parameters for VD Definition
Listed below are parameters for Configuration Wizard.
Item Parameter Remarks
RAID Level
RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 00
/ RAID 10 / RAID 50 / RAID60
RAID 00 and RAID 60 are not
supported.
Strip Size
8 KB / 16 KB / 32 KB / 64 KB / 128 KB / 256
KB / 512 KB / 1024 KB
Recommended value: 64KB
Access Policy
RW / Read Only / Blocked
Recommended value: RW
Read Policy
Normal / Ahead / Adaptive
Recommended value: Normal
Write Policy
WBack / Wthru
WBack: WriteBack
WThru: WriteThru
WrtThru forBAD
BBU
Checked / Unchecked
Select a mode when
WriteBack is specified for
Write Policy.
Checked: Normal WriteBack
Unchecked: Constant
WriteBack
Recommended value:
Checked
IO Policy
Direct / Cached
Recommended value: Direct
Disk
CachePolicy
Unchanged / Enabled / Disabled Recommended value:
Disabled
Disable BGI
No / Yes Specify whether to perform
Background Initialize after
creation of VD.
Recommended value: No
IMPORTANT:
 BGI (Back Ground Initialize) is available only for the following VDs:
– RAID5 VD configured with five or more physical devices.
– RAID6 VD configured with seven or more physical devices.
 To use RAID 5, RAID 6, or RAID 50, you need to additionally install the optional RAID
Upgrade Kit.
 If theUpgrade Kit is not installed, do not select "RAID5" that may appear in the [RAID Level]
box. If selected, the configuration information won't be saved. In such a case, you need to
define a VD again from the beginning.