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Configuration: Premium Feature—Virtual Disk Copy 171
Preparing Host Servers to Recopy a Virtual Disk
NOTE: 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
ensure 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 helps 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 host
server and the associated virtual disk you are recopying have to be in the
proper state. Perform the following steps to prepare your host 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>. For more information, see "SMrepassist Utility" on
page 281.
3
Click the
Summary
tab, then click
Disk Groups & Virtual Disks
to ensure
that the virtual disk is in
Optimal
or
Disabled
status.
4
Remove 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.
5
Follow 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.
book.book Page 171 Wednesday, June 8, 2011 5:01 PM