Changing backup device from DASD to tape

If you started your backup of the control data sets and journal data set to DASD and want to change to tape, specify the following command:

SETSYS CDSVERSIONBACKUP(BACKUPDEVICECATEGORY(TAPE))

If you are using DFSMSdss as the data mover, specify:

SETSYS CDSVERSIONBACKUP(BACKUPDEVICECATEGORY(TAPE(PARALLEL)))

You may change the number of backup copies. If you do not change the number of backup copies, the backup copies that are currently cataloged on DASD are uncataloged by DFSMShsm.

Note: DFSMShsm does not delete the DASD backup copies. The only function performed by DFSMShsm is to uncatalog these data sets. If you feel that you do not need the backup copies on DASD, you may scratch these data sets from your system after the appropriate number of backup copies have been made on a tape device media.

If you have already uncataloged the DASD backup copies, or if you change the number of backup copies, the attempt to uncatalog the DASD backup copies may fail during the backup of the control data sets and journal data set. An ARC0747I message is issued for each data set that could not be uncataloged, and the ARC0741I message at the completion of the backup of the control data sets and journal data set indicates that the backup was UNSUCCESSFUL. However, this unsuccessful status indicates only that backup versions were not successfully uncataloged. The tape backup copies will have been successfully made, and the final qualifier for these backup copies will have been successfully saved to be used for the next backup of the control data sets and journal data set. This scenario requires no action on your part.