If the Control-M/Tape to DFSMS interface is active, when a data set is created on tape, the DFSMS Management Class of the data set (if it exists) is recorded in the Control-M/Tape Media Database. Depending on the value of installation parameter OVERJCL, the retention is set either according to rule definitions defined for the data set or according to the retention attributes, described in the next topic, Retention Management Utility (CTTRTM) Processing and in Retention Algorithm.
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