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Dell PowerVault MD 32XX/36XX Series Storage Arrays CLI Guide

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Preparing Host Servers To Recopy A Virtual Disk

  • CAUTION: 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 server and the associated virtual disk you are recopying have to be in the proper state. To ensure that the host server is properly prepared to create a virtual disk recopy, you can either use an application to carry out this task, or you can perform the following steps:
  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 Owner’s Manual for more information.
  3. 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.
  4. 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.
After your server has been prepared, see Recopying The Virtual Disk to recopy the virtual disk.

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