NEC Express5800 series User Manual page 90

4-46
Configuring Your Storage and I/O Blade
Parameters for VD Definition
Listed below are parameters for Configuration Wizard.
Item Parameter
RAID Level RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 00
/ RAID 10 / RAID 50 / RAID60
Strip Size 8 KB / 16 KB / 32 KB / 64 KB / 128 KB / 256
KB / 512 KB / 1024 KB
Access Policy RW / Read Only / Blocked
Read Policy Normal / Ahead / Adaptive
WBack / Wthru
Write Policy
WrtThru for BAD Checked / Unchecked
BBU
IO Policy Direct / Cached
Disk Cache Unchanged / Enabled / Disabled
Policy
Disable BGI No / Yes
IMPORTANT:
following VDs:
– RAID5 VD configured with five or more physical devices.
BGI (Back Ground Initialize) is available only for the
Remarks
RAID 00 and RAID 60 are not
supported.
Recommended value: 64KB
Recommended value: RW
Recommended value: Normal
WBack: WriteBack
WThru: WriteThru
Select a mode when WriteBack
is specified for Write Policy.
Checked: Normal WriteBack
Unchecked: Constant
WriteBack
Recommended value:
Checked
Recommended value: Direct
Recommended value:
Disabled
Specify whether to perform
Background Initialize after
creation of VD.
Recommended value: No