Before you start the DFRMM procedure, use the EDGBKUP utility to restore from the latest control data set backup. You can restore from either tape or DASD. When you restore from tape, even though the DFRMM procedure is not started, DFSMSrmm verifies that you are restoring a backup of the DFSMSrmm control data set and allows you to use EDGBKUP with DFSMSrmm inactive. Any backup of the control data set is a backup consistent with the time that you started the backup. You can restore that backup copy to your selected point in time, or can optionally forward recover to the end of the DFSMSrmm backup processing or some later time as long as you have the journal backups and journal data set. Usually you will not use forward recovery. To restore the control data set at a recovery site, follow these steps:

1. If you used DFSMSrmm to create the backup by using IDCAMS REPRO, allocate a new control data set. You can use the DFSMSrmm-supplied sample job EDGJMFAL to allocate a new control data set.
2. Run EDGBKUP with the RESTORE parameter to restore the control data set from a backup copy. The MASTER DD statement is optional if you used DFSMSrmm to create the backup with DFSMSdss.

   //RESTORE  EXEC PGM=EDGBKUP,PARM='RESTORE'
   //SYSPRINT DD SYSOUT=*
   //BACKUP   DD DISP=SHR,DSN=RMM.BACKUP.CDS
   //MASTER   DD DISP=SHR,DSN=RMM.CDS

3. If you want to forward recover to a later point in time, run EDGBKUP with the RESTORE parameter and include the JOURNAL DD statement to identify the journals to be applied.

   //RESTORE  EXEC PGM=EDGBKUP,PARM='RESTORE'
   //SYSPRINT DD SYSOUT=*
   //MASTER   DD DISP=SHR,DSN=RMM.CDS
   //JOURNAL  DD DISP=SHR,DSN=RMM.JOURNAL.BACKUP(0)

   This step can be combined with Step 2 to restore the control data set and journal at the same time:

   //RESTORE  EXEC PGM=EDGBKUP,PARM='RESTORE'
   //SYSPRINT DD SYSOUT=*
   //BACKUP   DD DISP=SHR,DSN=RMM.BACKUP.CDS
   //MASTER   DD DISP=SHR,DSN=RMM.CDS
   //JOURNAL  DD DISP=SHR,DSN=RMM.JOURNAL.BACKUP(0)

   The MASTER DD statement is optional if you used DFSMSrmm to create the backup with DFSMSdss.
4. Allocate an empty journal data set. DFSMSrmm provides sample EDGJNLAL that you can use to allocate the journal.
5. Start DFRMM with a DFSMSrmm EDGRMMxx parmlib member that names the restored control data set and the empty journal.