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Configuration: Premium Feature—Snapshot Virtual Disks 159
Before creating a snapshot virtual disk, the host server must be in the proper
state. To prepare your host server:
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>. For more information, see "SMrepassist Utility" on
page 257.
3
Remove the drive letter(s) of the source in Windows or unmount the
virtual drive(s) in Linux to help guarantee a stable copy of the drive for the
Snapshot. If this is not done, the snapshot operation reports that it has
completed successfully, but the snapshot data is not updated properly.
NOTE: To verify that the virtual disk is in Optimal or Disabled state, select the
Summary tab and then click 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.
After your host server has been prepared, see "Creating a Snapshot Virtual
Disk Using the Advanced Path" on page 156, to create the snapshot using the
advanced path.
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 snapshots preserves the existing virtual disk-to-host mappings
to the snapshot virtual disk.
book.book Page 159 Thursday, December 9, 2010 3:20 PM