Recopying a virtual disk, Preparing host servers to recopy a virtual disk, Preparing host servers to recopy a – Dell POWERVAULT MD3620I User Manual

Page 190: Virtual disk

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Configuration: Premium Feature—Virtual Disk Copy

Recopying 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

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 267.

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

Summary tab, then click Disk Groups & Virtual Disks .

book.book Page 190 Tuesday, June 18, 2013 3:09 PM

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