You can define a special management class for BCSs. This management class can be shared with other critical system data sets that have the same requirements, to ensure that recent backup copies are available in case a catalog must be recovered.

In general, the management class you specify for BCSs should have the following attributes:

1. For expiration, NOLIMIT for all attributes.
2. For migration, NONE for command or auto migration.
3. For backup,
   1. For backup frequency, specify 0 to have DFSMShsm back up the catalog every occasion that it is changed.
   2. For administrator or user command backup, specify ADMIN to limit backup operations to storage administrators.
   3. For auto backup, specify YES.

Choose appropriate values for other backup attributes, depending on the needs of your installation. It is generally prudent to keep extra backup copies of catalogs, even after the catalog has been deleted.

Management class does not apply to VVDSs. VVDSs should only be backed up as part of a full volume dump.