Creating Snapshot Groups

Once you have created snapshot sets, you have the option to associate one or more snapshot sets with a group. The sets in the group must all reside on the same storage server. Snapshot groups are used to perform commands and functions on multiple snapshot sets simultaneously.  A snapshot set can be a member of only one group at a time. Commands issued to the specified group affect all snapshot sets assigned to that group. Virtually all actions available for a single snapshot set can be done at the group level. The exception is setting delays (i.e., setcompleteimagedelay).

Group actions can complete either in success (actions were successfully performed on all group members), or with mixed results. If the response from a group action does not indicate success you should check the results of the activity for each member of the group using either the groupgetstatus or the individual getsnapstatus type calls.

Before executing group commands you should verify that the snapshot sets in the group are in the correct logical state before issuing the command. For example, before issuing a groupenable command, make sure all the sets in the group are in the disabled state. Group commands are available through the Snapshot Utility and the CLI (command line interface) commands.  Remote administration of Snapshot must be done using DataCore VSS.

Creating snapshot groups is optional and not necessary to use Snapshot.

First, create the group and then add previously-created sets to the group. Refer to Creating Snapshot Sets, if necessary.

Creating a group in SANmanager:

  1. In the Domains and Groups tab, in the left pane select the Snapshot Groups folder and choose New Snapshot Group from the context menu. A group will be created with a default name. The first group name will be SnapshotGroup1 and the number will increment as more groups are created.

  2. You can change the group name by selecting it and choosing Properties from the context menu. Enter the new name and click OK.

  3. Apply the configuration.

Adding sets to the group:

  1. In the Domains and Groups tab, expand the Snapshot Groups folder in the left pane and select the Snapshot Sets folder to display a list of snapshot sets in the right pane.

  2. Select a snapshot set in the right pane and drag it to the snapshot group in the left pane. Repeat to add more sets to the group. (If you select a set from the list that is already in a group and drag it to a different group, the set will be removed from the original group and added to the new group.)

  3. Apply the configuration.

Related Topics:

Removing Snapshot Sets from Groups

Creating Snapshot Groups