Virtual disk read/write permissions – Dell PowerVault MD3220 User Manual

Page 166

Advertising
background image

166

Configuration: Premium Feature—Virtual Disk Copy

Creating a Virtual Disk Copy for an MSCS Shared

Disk

To create a virtual disk copy for a Microsoft Cluster Server (MSCS) shared

disk, create a snapshot of the virtual disk, and then use the snapshot virtual

disk as the source for the virtual disk copy.

NOTE:

An attempt to directly create a virtual disk copy for an MSCS shared disk,

rather than using a snapshot virtual disk, fails with the following error: The

operation cannot complete because the selected virtual disk is not a source virtual

disk candidate.

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 Manager.

The

Copy Manager window is displayed.

2 Select one or more copy pairs in the table.
3 Perform one of these actions:

book.book Page 166 Tuesday, June 18, 2013 2:53 PM

Advertising
This manual is related to the following products: