Dell PowerVault MD3000 - Manual (Page 78)

78 Snapshot 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 the Snapshot Using
the Advanced Path" on page 78 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.
Creating the Snapshot Using the Advanced Path
NOTE: Removing the drive letter of the associated virtual disk in Windows or
unmounting the virtual drive in Linux will help to guarantee a stable copy of the
drive for the Snapshot.
After first preparing the host server(s) as specified in the preceding procedure,
complete the following steps to create a virtual disk snapshot using the
advanced path:
1 In MD Storage Manager, click the Configure tab, and then click Create
Snapshot Virtual Disks.
2 The Additional Instructions dialog appears; click Close in this dialog to
continue.
3 Click the plus sign (+) to the left of the disk group to expand it, then click
the virtual disk from which you want to create a snapshot.
4 Click Next.
A No Capacity Exists warning appears if there is not enough space in the
disk group of the source virtual disk to create the snapshot.
5 On the Create Snapshot Virtual Disks – Select Path screen, select the
Advanced path.
NOTE: A snapshot repository virtual disk requires 8 MB of free space. If the
required free space is not available in the disk group of the source virtual disk,
the Create Snapshot Virtual Disks feature defaults to the advanced path.