Dell MD3220, MD3200 owner manual Re-Copying a Virtual Disk, 175

3To ensure that the virtual disk is in Optimal or Disabled status, select the Summary tab, then click Disk Groups & Virtual Disks.

4Remove the drive letter(s) of the source and (if mounted) virtual disk in Windows or unmount the virtual drive(s) in Linux to help guarantee a stable copy of the drive for the virtual disk. If this is not done, the copy operation reports that it has completed successfully, but the copied data is not is not updated properly.

5Follow any additional instructions for your operating system. Failure to follow these additional instructions can create unusable virtual disk copies.

NOTE: If your operating system requires additional instructions, you can find those instructions in your operating system documentation.

Re-Copying a Virtual Disk

You can use the Copy Manager to create a new virtual disk copy for a selected source virtual disk and a target virtual disk. Use this option when you have stopped a virtual disk copy and want to start it again or when a virtual disk copy has failed or completed. The virtual disk copy starts over from the beginning.

•Possible loss of data—The re-copying operation overwrites existing data on the target virtual disk.

•Possible loss of data access—While a virtual disk copy has a status of In Progress or Pending, source virtual disks are available for read I/O activity only. Write requests are allowed after the virtual disk copy has completed.

Keep these guidelines in mind when re-copying a virtual disk:

•If hosts are mapped to the source virtual disk, the data that is copied to the target virtual disk when you perform the re-copy operation may have changed since the previous virtual disk copy was created.

•Select only one virtual disk copy in the Copy Manager dialog.

To re-copy the virtual disk:

1Stop all I/O to the source virtual disk and the target virtual disk.

2Unmount any file systems on the source virtual disk and the target virtual disk.

3In the AMW, select Virtual Disk→ Copy Manager. The Copy Manager window is displayed.

Configuration: Premium Feature—Virtual Disk Copy

175