146 Configuration: Premium Feature—Snapshot Virtual Disksrepository uses less disk space than a full physical copy, because the only datablocks that are stored in the snapshot repository virtual disk are those thathave changed since the time of the snapshot.When you create a snapshot virtual disk, you specify its location, capacity,and other parameters. You can disable or delete the snapshot virtual diskwhen it is not required. If you disable a snapshot virtual disk, you can re-create and reuse it the next time you perform a backup. For moreinformation, see "Re-creating Snapshot Virtual Disks" on page 159. If youdelete a snapshot virtual disk, you also delete the associated snapshotrepository virtual disk.NOTE: Deleting a snapshot does not affect data on the source virtual disk.NOTE: The following host preparation sections also apply when using the snapshotfeature through the CLI interface.Creating a Snapshot Virtual Disk Using theSimple PathYou can choose the simple path to create a snapshot virtual disk if the diskgroup of the source virtual disk has the required amount of free space. Asnapshot repository virtual disk requires a minimum 8 MB of free capacity.The destination of a snapshot repository virtual disk is determined based onthe free capacity available in the disk group.If 8 MB of free capacity is not available in the disk group of the source virtualdisk, the Create Snapshot Virtual Disks feature defaults to the advanced path.For more information, see "Creating a Snapshot Virtual Disk Using theAdvanced Path" on page 149.In the advanced path option, you can choose to place the snapshot repositoryvirtual disk in another disk group or you can use unconfigured capacity on thestorage array to create a new disk group.About the Simple PathUsing the simple path, you can specify:• Snapshot Virtual Disk Name—A user-specified name that helps youassociate the snapshot virtual disk to its corresponding snapshot repositoryvirtual disk and source virtual disk.
