Specifying how frequently data sets are backed up
For SMS-managed data sets, you can specify a different backup frequency for each management class. This lets you have as many different backup frequencies as you have management classes. For non-SMS-managed storage, you can specify only one backup frequency for all volumes processed by any one DFSMShsm host. You can, however, change the backup frequency of individual non-SMS-managed data sets with the (H)ALTERDS command. See Changing the backup conditions for a data set for more information. Both the backup frequency specified for a DFSMShsm host and the backup frequency specified for a management class indicate the number of days that must pass between backups of any data set.
The FREQUENCY parameter of the SETSYS command controls the backup
frequency for the data sets processed by each DFSMShsm host. For the
example, the command that is added to the ARCCMDxx member
for each host is:
SETSYS FREQUENCY(1)