Dell POWERVAULT MD3600I - Manual (Page 173)

Recopying The 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.
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 might have changed since the previous virtual disk copy was created.
• Select only one virtual disk copy in the Copy Manager dialog.
CAUTION: Possible loss of data—The re-copying operation overwrites existing data on the target virtual disk.
CAUTION: 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.
To recopy the virtual disk:
1. Stop all I/O to the source virtual disk and the target virtual disk.
2. Unmount any file systems on the source virtual disk and the target virtual disk.
3. In the AMW, select Copy Services → Virtual Disk Copy → Manage Copies.
The Copy Manager window is displayed.
4. Select the copy pair in the table.
5. Select Copy → Re-Copy.
The Re-Copy window is displayed.
6. Set the copy priority.
There are five copy priority rates available: lowest, low, medium, high, and highest. If the copy priority is set at the
lowest rate, I/O activity is prioritized, and the virtual disk copy takes longer. If the copy priority is set to the highest
priority rate, the virtual disk copy is prioritized, but I/O activity for the storage array might be affected.
Removing Copy Pairs
You can remove one or more virtual disk copies by using the Remove Copy Pairs option. Any virtual disk copy-related
information for the source virtual disk and the target virtual disk is removed from the Virtual Disk Properties dialog and
the Storage Array Profile dialogs. When you remove a virtual disk copy from the storage array, the Read-Only attribute
for the target virtual disk is also removed. After the virtual disk copy is removed from the Copy Manager, you can either
select the target virtual disk as a source virtual disk or the target virtual disk for a new virtual disk copy. If you remove a
virtual disk copy, the source virtual disk and the target virtual disk no longer appear in the Copy Manager.
Keep these guidelines in mind when you remove copy pairs:
• Removing copy pairs does not delete the data on the source virtual disk or target virtual disk.
• If the virtual disk copy has a status of In Progress, you must stop the virtual disk copy before you can remove the
copy pair.
To remove copy pairs:
1. In the AMW, select Copy Services → Virtual Disk Copy → Manage Copies.
The Copy Manager window is displayed.
2. In the table, select one or more copy pairs.
173