DFSMShsm™ logical backup on tape – at the primary site

  1. Define and load VSAM spheres.
  2. Create DFSMShsm™ logical backups and specify TAPE as the TARGET.
  3. Update the VSAM spheres with CICS® applications, batch applications, or both.
  4. Perform™ LOGOFLOGS SCAN.
  5. Create log stream copies of the MVS™ log streams that contain the log records.
  6. Perform™ RCDS EXPORT.
  7. Create backups of the DFSMShsm™ control data sets and journal periodically. To manually create CDS backups, first issue the DFSMShsm™ QUERY CDSVERSIONBACKUP command. This displays the names of the sequential data sets used to backup the DFSMShsm™ CDS and journal. Record these names. To backup the DFSMShsm™ CDS and journal to DASD, you must pre-allocate the listed data sets. To backup the DFSMShsm™ CDS and journal to TAPE, these data sets are dynamically created. Next, issue the DFSMShsm™ BACKVOL CDS command to backup the DFSMShsm™ CDS.
  8. If you create copies of the DFSMShsm™ journal more often than you backup the DFSMShsm™ CDS, use the copied journal to update the CDS with the latest activity on the journal at the remote site.

    To backup the DFSMShsm™ journal, first stop DFSMShsm™. Then, run the ARCBJRNL utility.

  9. Send the following to the remote site:
    • DFSMShsm™ logical backups of the VSAM spheres.
    • Log stream copies.
    • Sequential data set that contains the exported RCDS.
    • DFSMShsm™ CDS sequential data set backups.
    • DFSMShsm™ journal backup.
At the remote site:
  1. Stop DFSMShsm™ if it is active.
  2. Mount the tapes with the DFSMShsm™ backups, log stream copies, and exported RCDS.
  3. Perform™ RCDS IMPORT.
  4. Catalog the log stream copies.
  5. Sort the DFSMShsm™ journal backup by KEY using the EQUALS parameter.
  6. If DFSMSdss™ was the data mover used to backup the DFSMShsm™ CDS:
    1. Restore the DFSMShsm™ CDS from their backups.
    2. Export the restored data sets using the IDCAMS program.
  7. Use the ARCIMPRT utility to create the CDS at the remote site using the exported CDS and sorted journal as input.
  8. Start DFSMShsm™.
  9. Call the CICS® VR panel interface. Accept the default recovery values and specify QSAM copy as the log stream type to create and submit a recovery job that restores the VSAM spheres from their latest backup, then perform a forward recovery. CICS® VR can now query DFSMShsm™ for the latest backups that exist for each VSAM sphere.

See z/OS® DFSMShsm™ Storage Administration Guide for more information about DFSMShsm™ and the enhanced CDS recovery function.