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The presence or absence of a tape management system (such as Control-M/Tape) determines how Control-M/Restart handles tape volume reuse when a restarted job re-executes steps that created new tape data sets in previous runs.
If a tape management system is in use, Control-M/Restart does not attempt to reuse the same tape volume during the rerun.
When there is no tape management system, Control-M/Restart attempts to reuse the same tape volume during the job rerun.
Presence or absence of a tape management system is indicated in the TAPEMS parameter in the CTRPARM member in the IOA PARM library.
For full functionality of the Control-M/Restart interface to tape management systems, the CTRX001 Control-M/Restart exit may be necessary. For more information, see the CTRX001T and CTRX001Z sample exits in the IOA SAMPEXIT library.
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