z/OS DFSMS Implementing System-Managed Storage
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Identifying and Excluding Special Jobs

z/OS DFSMS Implementing System-Managed Storage
SC23-6849-00

Exclude some data sets from tape mount management as the data needs to remain on tape for the following reasons:
  • Disaster recovery
  • Vital records
  • Interchange data
These data sets sometimes have a recognizable pattern, such as the following:
  • “*.DR.**” can identify the disaster recovery data sets
  • EXPDT=9800 usually indicates offsite tapes to the tape management system
  • VRJOB is the job name for all the vital records jobs.

Tip: If your tape management system provides support for the pre-ACS routine exit and supplies the MDEST parameter, you might be able to identify most of these data sets by using an MSDEST parameter value other than 'NULL'.

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