Preparing host servers to recopy a virtual disk, Preparing host servers to recopy, A virtual disk – Dell PowerVault MD3200i User Manual

Page 184

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Configuration: Premium Feature—Virtual Disk Copy

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

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 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 must 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 257.

3 To ensure that the virtual disk is in Optimal or Disabled status, select the

Summary tab, then click Disk Groups & Virtual Disks.

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 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 184 Tuesday, June 18, 2013 3:15 PM

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