DELL MD3220 사용자 설명서

Configuration: Premium Feature—Virtual Disk Copy

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. 

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. 

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 155  Monday, June 21, 2010  11:00 AM