DFSMShsm

The CTTSYNC utility automatically compares the Media database with the DFSMShsm OCDS file and lists all inconsistencies. No updates are made to the Media database or to the OCDS file. For more information about DFSMShsm and Control-M/Tape support, see the chapter in the Control-M/Tape Implementation Guide that discusses External Data Managers.

The utility uses the VOLEDMID field of the Media database volume record in order to verify whether the volume is controlled by DFSMShsm, or whether it is controlled by a different External Data Manager, such as CA-Disk. The VOLEDMID field is automatically updated by the Control-M/Tape real time environment and is set according to the creation PGM.

Before running the CTTSYNC utility you should manually add the DAOCDS DD statement to your job. This DD statement should refer to the DFSMShsm OCDS file.

Note: //DAOCDS DD DISP=SHR,DSN=HSM.OCDS

The following comparisons are available between the Media database and the DFSMShsm OCDS file:

• Checks that all volumes controlled by DFSMShsm are marked in the Media database as Active and EDM.
• Checks that all volumes that are not controlled by DFSMShsm and that have a value of HSM in their EDMID field, are marked as scratch in the Media database.