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Configuration: Premium Feature—Virtual Disk Copy 163
NOTE: When creating a snapshot virtual disk, map the snapshot virtual disk to only
one node in the cluster. Mapping the snapshot virtual disk to the host group or both
nodes in the cluster may cause data corruption by allowing both nodes to
concurrently access data.
Virtual Disk Read/Write Permissions
After the virtual disk copy is complete, the target virtual disk automatically
becomes read-only to the hosts. The target virtual disk rejects read and write
requests while the virtual disk copy operation has a status of Pending or In
Progress or if the operation fails before completing the copy. Keep the target
virtual disk Read-Only enabled if you want to preserve the data on the target
virtual disk for reasons such as the following:
• If you are using the target virtual disk for backup purposes.
• If you are using the data on the target virtual disk to copy back to the
source virtual disk of a disabled or failed snapshot virtual disk.
If you decide not to preserve the data on the target virtual disk after the
virtual disk copy is complete, change the write protection setting for the
target virtual disk to Read/Write.
To set the target virtual disk read/write permissions:
1
In the AMW, select
Virtual Disk
Copy
Copy Manager
.
The
Copy Manager
window is displayed.
2
Select one or more copy pairs in the table.
3
Perform one of these actions:
• To enable Read-Only permission, select
Change
Target Virtual Disk
Permissions
Enable Read-Only
.
NOTE: Write requests to the target virtual disk are rejected when the Read-
Only permission is enabled on the target virtual disk.
• To disable Read-Only permission, select
Change
Tar get Vi rtu al
Disk Permissions
Disable Read-Only
.
book.book Page 163 Wednesday, June 8, 2011 5:01 PM