Configuration: Premium Feature—Virtual Disk Copy 16911Configuration: Premium Feature—Virtual Disk CopyNOTE: A virtual disk copy overwrites data on the target virtual disk. Before startinga virtual disk copy, ensure that you no longer need the data or back up the data onthe target virtual disk.NOTE: If you ordered this feature, you received a Premium Feature Activation cardthat shipped in the same box as your Dell PowerVault MD storage array. Follow thedirections on the card to obtain a key file and to enable the feature.NOTE: The preferred method for creating a virtual disk copy is to copy from asnapshot virtual disk. This allows the original virtual disk used in the snapshotoperation to remain fully available for read/write activity while the snapshot is usedas the source for the virtual disk copy operation.When you create a virtual disk copy, you create a copy pair that has a sourcevirtual disk and a target virtual disk on the same storage array.The source virtual disk is the virtual disk that contains the data you want tocopy. The source virtual disk accepts the host I/O read activity and stores thedata until it is copied to the target virtual disk. The source virtual disk can bea standard virtual disk, a snapshot virtual disk, or the source virtual disk of asnapshot virtual disk. When you start a virtual disk copy, all data is copied tothe target virtual disk, and the source virtual disk permissions are set to read-only until the virtual disk copy is complete.The target virtual disk is a virtual disk to which you copy data from the sourcevirtual disk. The target virtual disk can be a standard virtual disk, or thesource virtual disk of a failed or disabled snapshot virtual disk.After the virtual disk copy is complete, the source virtual disk becomesavailable to host applications for write requests. To prevent error messages, donot attempt to access a source virtual disk that is participating in a virtual diskcopy while the virtual disk copy is in progress.
