Moving some data sets from migration level 1 volumes

Two commands, FREEVOL and MIGRATE, are available to move data from ML1 volumes. You can move data sets from individual ML1 volumes with the FREEVOL command, or you can move or delete data sets from all ML1 volumes with the MIGRATE command. If you intend to make more space available on ML1 volumes, use the MIGRATE ML1 command.

Note: The "data" and "data sets" mentioned here and in the next few topics refer to data sets that have been created by DFSMShsm. If your installation stores non-SMS-managed user or system data on ML1 volumes (refer to z/OS DFSMShsm Implementation and Customization Guide for further restrictions), this data is not affected by FREEVOL and MIGRATE commands.

Use the FREEVOL AGE(0) command to empty DASD migration or DASD backup volumes in preparation for movement to new equipment or to replace partially damaged volumes. If you are attempting to empty an ML1 volume, there can be two types of data that need to be moved off the volume: backup versions and migrated data that must remain until it is backed up. Since backup of the migrated data only occurs when automatic backup is run on the primary DFSMShsm host, ensure that all data sets are removed from the ML1 volume by running automatic backup on your primary DFSMShsm host shortly before issuing the FREEVOL AGE(0) command.