
User Guide
138
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Parameters for VD Definition
Caution
■
BGI (Back Ground Initialize) is available only for a RAID5 VD
configured with five or more HDDs.
■
To use RAID 5 or RAID 6, with an Internal RAID Controller,
you need to install the optional RAID Upgrade Kit.
■
If the RAID Upgrade Kit is not installed, do not select
"RAID5" that may appear in [RAID Level] box. If selected,
you will fail to save the configuration information. In such a
case, you need to define a VD again from the beginning.
Table 28: Configuration Wizard Parameters
Item
Parameters
Remarks
RAID Level
RAID 0
/
RAID 1
/
RAID 5
/
RAID 6
/
RAID 00 / RAID 10 / RAID 50 / RAID60
RAID 00, RAID 10, RAID 50, 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 for
BAD 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 Cache
Policy
NoChange / Enable /
Disable
Recommended value: Disable
Disable BGI
No
/ Yes
Specify whether to perform Background Initialize
after creation of VD.
Recommended value: No
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