Using NetBackup for SQL Server with Snapshot Client How SQL Server operations use Snapshot Client
what backup method and policy were used when a SQL Server backup was created, right-click on the backup image and choose Properties.
Indicates backup was created with a frozen image (snapshot) method.
The SQL Server agent provides a method in which multiple databases can be quiesced together and split-off to form a single snapshot. This minimizes the usage of system resources if the databases exist on a single volume, because the aggregation of constituent files would use one snapshot volume instead of one per database. The method for aggregating database Snapshot Client backups is called backup grouping.
When databases are backed up in a group, all of the databases are quiesced simultaneously, and the constituent files of all of the databases are backed up to a single storage image under the same backup id. This means that an import and copy procedure would use only one image in order to export all of the database backups in the group.