The installed tape management system controls the expiration of the Virtual Volumes and the Backstore Tapes. The Virtual Volumes will be under whatever tape retention control that the application requested in their JCL or dynamic allocation request, or the retention specified by tape management system retention rules. The Backstore Tapes should be under catalog control retention and not expired until all data sets on the tape have expired.
When the Virtual Volumes or Backstore Tapes meet the required retention control requirements, the tape management system expires and scratches the affected tapes. Virtual Volume expirations must be communicated to CA Vtape so that its control data sets can be updated with the change in status. Backstore Tape expirations do not need to be communicated to CA Vtape.
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