Backing Up and Restoring CA Vtape Control Data Sets › Back Up Control Data Sets › Back Up BSDS

Back Up BSDS

Back up the BSDS at about the same time as your tape management database. Taking backups of these data sets close together ensures that Virtual Volume information that is stored in the BSDS matches information that is stored in the tape management database. A synchronized set of backups is not required. If these backups are too far out-of-sync, it can complicate your disaster recovery efforts. CA Vtape can require manual intervention to access Virtual Volume files.

Back up the BSDS with CA Disk, DFSMSdss, FDR, or any other backup product that implements concurrent or snapshot copy. Concurrent or snapshot copy lets you create backups without having to stop CA Vtape or suspend tape processing.

Maintain backups on DASD or on physical tapes that provide access to the backup data set even when CA Vtape is inoperative. Do not back up the BSDS to media that requires CA Vtape to be active to restore it.

To ensure that a media failure does not prevent restoring the most current Virtual Volume information:

• Use RAID devices for a backup to DASD.
• Duplex a backup to tape.

Sample of a CA Disk backup job:

//JOBNAME   JOB …
//BACKUP    EXEC DMS,MI=002
//SYSIN     DD *
  FIND      DSN=HLQ.BSDS1
  BACKUPCC  RETPD=14

Sample of a DFSMSdss backup job:

//JOBNAME       JOB …
//BACKUP        EXEC PGM=ADRDSSU,REGION=4M
//SYSPRINT      DD SYSOUT=*
//INPUT         DD DISP=SHR,DSN=HLQ.BSDS1
//OUTPUT        DD DISP=(,CATLG),DSN=HLQ.BSDS.BACKUP(+1),
//LABEL=(1,SL),UNIT=REAL3490
//SYSIN         DD *
    DUMP DATASET(INCLUDE(HLQ.BSDS1)) -
    PHYSINDDNAME(INPUT) -
    OUTDDNAME(OUTPUT) -
    CANCELERROR OPTIMIZE(4)  CONCURRENT WAIT(20,20) -
    TOL(ENQF)
//