Users Guide

The Create Snapshot wizard is displayed.

Figure 38. Create a snapshot dialog box

• Snapshot name: the name of the new snapshot virtual disk.

• Snapshot repository name: the name of the new repository virtual disk.

• Percent of base virtual disk: the percentage of the base virtual disk to use for the repository.

• Disk group: the name of the disk group in which to place the repository virtual disk.

2. Enter the parameters to be used for the snapshot in the Create a snapshot wizard.

3. Select the disk group that you want to use for the snapshot repository from the drop-down menu.

4. Click OK.

NOTE: When the size of the snapshot exceeds the percentage of the base virtual disk, the snapshot

fails. The snapshot is no longer available for use until it is reestablished by recreating it (see Recreate

Snapshot).

Disable Snapshot

To temporarily deactivate a snapshot so that you can use it again later, highlight the snapshot virtual disk

in the virtual disks tree, and click the Disable Snapshot icon. The snapshot process stops, but the

relationship remains between the snapshot, the base virtual disks, and the repository virtual disks.

Recreate Snapshot

To reestablish a deactivated snapshot or refresh an existing snapshot, click Recreate Snapshot, and then

click the OK button to confirm the operation. A new snapshot of the base virtual disk is created.

NOTE: Recreating a snapshot disables the original snapshot before the new snapshot is created.

Redistribute Virtual Disk

The MD vCenter Plug-in supports redistribution of storage array virtual disks based on their preferred

RAID controller module ownership. Typically during ESXi rescan operations, virtual disk ownership is

transferred to the non-preferred RAID controller module causing the storage array to become non-

optimal. By redistributing the virtual disks to their preferred RAID controller module owner, resolves the

non-optimal condition and balance the I/O loads across the storage array RAID controller module. If all

the storage array virtual disks are already located on their preferred RAID controller module, the

Redistribute Virtual Disk icon is unavailable.