User manual

iSCSI GbE to SAS/SATA II RAID Subsystem

User Manual

(GB) (MB) means “Used snapshot space” / “Total snapshot

space”. The unit can be displayed in GB or MB.

#Snapshot Number of snapshot(s) that have been taken.

RG name The RG name of the virtual disk

 VD operations description:

Create Create a virtual disk.

Extend Extend the virtual disk capacity.

Parity check Execute parity check for the virtual disk. It supports RAID 3 /

5 / 6 / 30 / 50 / 60.

Regenerate parity:

x “Yes” Æ Regenerate RAID parity and write.

x “No” Æ Execute parity check only and find mismatches.

It will stop checking when mismatches count to 1 / 10 /

20 / … / 100.

Delete Delete the virtual disk.

Set property Change the VD name, right, priority, bg rate and read ahead.

Right:

x “WT” Æ Write Through.

x “WB” Æ Write Back. (Default)

x “RO” Æ Read Only.

Priority:

x “HI” Æ HIgh priority. (Default)

x “MD” Æ MiDdle priority.

x “LO” Æ LOw priority.

Bg rate:

x “4 / 3 / 2 / 1 / 0” Æ Default value is 4. The higher

number the background priority of a VD is, the more

background I/O will be scheduled to execute.

Read ahead:

x “Enabled” Æ Enable disk read ahead. (Default)

x “Disabled” Æ Disable disk read ahead.

Type:

x “RAID” Æ the virtual disk is normal. (Default)

x “Backup” Æ the virtual disk is for clone usage.