Backing up a data set

Task: Create a backup version for a specific data set, a list of data sets, or a filter specification. You can back up a data set to either DASD or tape.

Only eligible data sets are backed up. Whether an SMS-managed data set is eligible to be backed up by command is determined by SMS management class attributes. For a non-SMS-managed data set, eligibility for backup is determined by the VERSIONS parameter of the HALTERDS command.

If the data set to be backed up is currently allocated, DFSMShsm attempts to deallocate it. DFSMShsm does not try to reallocate the data set at the end of HBACKDS processing.

Note: When you back up a data set to DASD, it must fit on a migration level 1 volume. If it does not, the command fails.

RACF® authority: To back up a RACF-protected data set, you must have RACF UPDATE authority to the data set.

Abbreviation: The minimum abbreviation for the HBACKDS command is HBACK.