DUMP, INCREMENTAL, and TOTAL: Specifying which data sets are backed up

Explanation: DUMP, INCREMENTAL, and TOTAL are mutually exclusive, optional parameters of VOLUME specifying which data sets are to be backed up. A message is issued and the backup or dump is not processed if:

• DFSMShsm is running in a non-SMS environment.
• The SMS-managed volume is in initial status (contains both SMS-and non-SMS-managed data sets while in the process of being converted to an SMS-managed volume).
• DFSMShsm cannot determine if the specified volume is SMS-managed.

DUMP

specifies that a DFSMSdss full-volume dump be performed for a single volume. All specified subparameters process the volume and thereby override the dump classes, defined for the storage group which is associated with the volume.

Note: The DUMP subparameters DUMPCLASS, RETENTIONPERIOD, and STACK, are described separately.

INCREMENTAL

specifies that only those data sets that have never been backed up or have been changed since their last backup version was created are eligible for backup. If a data set is a changed data set, the frequency requirement as defined in the data set’s management class must be met before DFSMShsm backs up the data set.

TOTAL

specifies that all the data sets on the volume are to be backed up unless the data set is excluded by its management class.