Create Snapshot Virtual Disks: Additional Instructions

Before creating a snapshot virtual disk, the host server has to be in the proper state. To ensure that the host server is properly prepared to create a snapshot virtual disk, 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.
  2. Using your Windows system, flush the cache to the source. At the host prompt, type

    SMrepassist -f <filename-identifier>

    and press Enter.

  3. Remove the drive letters of the source in Windows or unmount the virtual disks in Linux to help guarantee a stable copy of the physical disk for the Snapshot. If it is not done, the snapshot operation will report that it has completed successfully, but the snapshot data will not be updated properly.

    Note:

    Verify that the virtual disk has a status of Optimal or Disabled by clicking the Summary tab and then clicking Disk Groups & Virtual Disks.

  4. Follow any additional instructions for your operating system. Failure to follow these additional instructions can create unusable snapshot virtual disks.

    Note:

    If your operating system requires additional instructions, you can find those instructions in your operating system documentation.

    If you want to use a snapshot regularly, such as for backups, use the Disable Snapshot and Re-create Snapshot options to reuse the snapshot. Disabling and re-creating snapshot preserves the existing virtual disk-to-host mappings to the snapshot virtual disk.

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