Bull Cedoc NovaScale R440 E2, User Manual, Page: 176 / 552

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.