Running automatic backup multiple times a day

A consideration that applies only to backup is related to the phases of backup. See z/OS DFSMShsm Storage Administration for a detailed discussion of these phases. To briefly summarize, backup is divided into four phases:

Phase 1: Backing up the control data sets
Phase 2: Moving backup versions
Phase 3: Backing up migrated data sets
Phase 4: Backing up DFSMShsm-managed volumes with the automatic backup attribute
In multiple DFSMShsm-host environment configurations, only a primary host performs the first three phases. The first three phases are performed as successive phases of a single task.

Once you have determined the phases of backup you wish to perform, you need to:

Apply the correct patches for that phase:
Rule: You must apply the BCR patches after the last time that autobackup runs. The MCVT patches will remain until DFSMShsm is restarted.

The information you need to select and apply the correct patch is presented in the sections that follow.
Issue the SETSYS AUTOBACKUPSTART command to define a new automatic backup window.
Automatic backup starts immediately if the current time is in the new start window. If the current time is not in the new start window, automatic backup starts automatically when the planned start time occurs.