Configuration: Premium Feature—Virtual Disk Copy 165

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
Target Virtual
Disk Permissions
Disable Read-Only
.

Virtual Disk Copy Restrictions

Before you perform any virtual disk copy tasks, understand and adhere to the
restrictions listed in this section. The restrictions apply to the source virtual
disk, the target virtual disk, and the storage array.
• While a virtual disk copy has a status of In Progress, Pending, or Failed, the
source virtual disk is available for read I/O activity only. After the virtual
disk copy is complete, read and write I/O activity to the source virtual disk
are permitted.
book.book Page 165 Wednesday, May 26, 2010 2:14 PM