i3 International SAN iS316 User Manual page 48

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▼ -> Verify Parity: Execute parity check for the virtual disk. It supports RAID 3 / 5 / 6 / 30 / 50 / 60.
The options are:
Verify and repair data inconsistencies.
Only verify for data inconsistencies. Stop verifying when 1 10 20 30 40 50 60 70 80 90
100 inconsistencies have been found.
▼ -> Delete: Delete the virtual disk.
▼ -> Set Properties: Change the virtual disk name, cache mode, priority, bg rate, read-ahead, AV-
media mode, and type.
Cache Mode:
Write-through Cache: A caching technique in which the completion of a write request is
not signaled until data is safely stored in non-volatile media. Each data is synchronized in
both data cache and accessed physical disks.
Write-back Cache: A caching technique in which the completion of a write request is
signaled as soon as the data is in cache and actual writing to non-volatile media occurs
at a later time. It speeds up system write performance but needs to bear the risk where
data may be in consistent between data cache and the physical disks in one short time
interval. (Default)
Read-Only: Set the volume to be read-only, any write request is forbidden.
Priority:
High Priority. (Default)
Medium Priority.
Low Priority.
Bg Rate:
4 / 3 / 2 / 1 / 0: Default value is 4. The higher number the background priority of a virtual
disk has, the more background I/O will be scheduled to execute.
Read-Ahead:
Enabled: The system will discern what data will be needed next based on what was just
retrieved form disk and then preload this data into the disks buffer. This feature will
improve performance when the data being retrieved is sequential. (Default)
Disabled: Disable disk read ahead.
AV-Media Mode:
Enabled: Enable AV-media mode for optimizing video editing.
Disabled: Disable AV-media mode. (Default)
Type:
RAID: The virtual disk is normal. (Default)
Backup Target: The virtual disk is used for clone usage.
▼ -> Space Reclamation: Reclaim space for the virtual disk.
▼ -> Attach LUN: Attach a logical unit number to the virtual disk.
▼ -> Detach LUNs: Detach a logical unit number from the virtual disk.
▼ -> List LUNs: List all of the attached logical unit numbers.
▼ -> Set Clone: Set the target virtual disk for clone.
▼ -> Clear Clone: Clear the clone.
▼ -> Start Clone: Start the clone.
▼ -> Stop Clone: Stop the clone.
▼ -> Schedule Clone: Set the clone function by schedule.
▼ -> Set Snapshot Space: Set snapshot space for preparing to take snapshots.
▼ -> Cleanup Snapshots: Clean all snapshots of the virtual disk and release the snapshot space.
▼ -> Take a Snapshot: Take a snapshot on the virtual disk.
▼ -> Schedule Snapshots: Set the snapshots by schedule.
▼ -> List Snapshots: List all snapshots of the virtual disk.
▼ -> More Information: Show the detail information of the virtual disk.
Take an example of creating a virtual disk.
1.
Click Create button.
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