The backup sets and the volumes on which they reside are managed according to the retention period set by the administrator when the backup set is created. TSM manages backed up files according to the management class assigned to the files. When TSM creates a backup set, the files included in the backup set are no longer bound to the criteria set by the management class. Consequently, the files included in a backup set are not migrated through the storage pool hierarchy.
The server records the information about the volumes used for the backup set in the volume history file. Volume history includes information such as the date and time the backup set was generated, the device class to which the backup set was written, and the command used to generate the backup set. You can view this information when you use the QUERY VOLHISTORY command, with BACKUPSET specified as the volume type.
To view additional information about backup sets, you can use the QUERY BACKUPSET. This command displays information such as the name of the client node whose data is contained in the backup set as well as the description of the backup set, assuming one has been used. For more information, see Displaying Backup Sets.