The CA Vtape Backstore Engine stacks Virtual Volumes as data sets on the Backstore Tapes. Each Virtual Volume stacked is cataloged as an independent data set with a generated name and catalog managed retention. These catalog entries are collectively known as the Backstore Entries.
Each Backstore Entry will be tracked by the Tape Management System. This causes an increase in the number of records for data sets maintained in the Tape Management System Database. Review the actual space available in the database to determine if it will support the expected increase in the number of records.
Review the Tape Management System documentation and setup to ensure that tapes are returned only to scratch status when all the data sets stacked on them have expired. Without the proper setup, the Tape Management System may scratch a stacked tape when the first data set (file 1) on the tape expires. This could cause a data loss situation if files 2 through 'n' have not expired. This applies to both virtual and physical tapes, because applications can write multiple data sets to a Virtual Volume, just like they do to a physical tape.
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