Dell PowerVault MD3000 Information Update page 12

3 Choose the target virtual disk:
To use an existing virtual disk as the target, click the Use an existing virtual disk radio button
a
and highlight the virtual disk of your choice in the list.
NOTE:
the risk of having unusable space on the target virtual disk after the virtual disk copy is completed.
To create a new virtual disk for the target, click the Create a new virtual disk radio button.
b
Type a name for this new target virtual disk in the text box.
4 Click the Next button at the bottom of the page.
The Create virtual disk copies—Set Copy Priority dialog box appears.
5 Set the copy priority for the virtual disk copy and click the Next button.
The source virtual disk, the target virtual disk, and the copy priority setting that you selected appear
on the Create virtual disk copies—Confirm Copy Settings dialog. The higher priorities allocate more
resources to the virtual disk copy at the expense of the storage array's performance. For more
information, see "Setting Copy Priority" in the User's Guide.
Preparing to Recopy a Virtual Disk
You can recopy a virtual disk when you have stopped a virtual disk copy and you want to start it again
or when a virtual disk copy has failed.
The Recopy option overwrites existing data on the target virtual disk and makes the target virtual disk
read-only to hosts. This option fails all snapshot virtual disks associated with the target virtual disk, if any exist.
Preparing Host Servers to Recopy a Virtual Disk
NOTICE:
Before you create a new copy of a source virtual disk, stop any data access (I/O) activity or suspend
data transfer to the source virtual disk (and, if applicable, the target disk) to ensure that you capture an accurate
point-in-time image of the source virtual disk. Close all applications, including Windows Internet Explorer, to make
sure all I/O activity has stopped.
NOTE:
Removing the drive letter of the associated virtual disk(s) in Windows or unmounting the virtual drive in
Linux will help to guarantee a stable copy of the drive for the virtual disk copy.
Before creating a new virtual disk copy for an existing copy pair, both the server and the associated virtual
disk you are recopying have to be in the proper state. Perform the following steps to prepare your server
and virtual disk:
1 Stop all I/O activity to the source and target virtual disk.
2 Using your Windows system, flush the cache to both the source and the target virtual disk (if mounted).
At the host prompt, type
SMrepassist -f <filename-identifier>
and press <Enter>. See "SMrepassist Utility" in the User's Guide for more information.
10
Information Update
If you select a target virtual disk with a capacity similar to the source virtual disk, you reduce