You can control whether DFSMShsm can use copies of data sets on dump tapes to recover individual data sets. If you allow restoring of individual data sets from dump copies in a particular dump class, DFSMShsm selects the latest copy of the data set, whether it resides on a dump volume or a backup volume. If you do not allow restoring of individual data sets from dump copies in a particular dump class, DFSMShsm cannot select the data set from a dump copy in that class.
DEFINE DUMPCLASS(ONEWEEK AUTOREUSE DATASETRESTORE)
DEFINE DUMPCLASS(TWOWEEK NOAUTOREUSE -
NODATASETRESTORE)
DEFINE DUMPCLASS(FOURWEEK NOAUTOREUSE -
NODATASETRESTORE)