DFM has the following data set requirements:
- New data sets created using DFM should be
SMS-managed, although DFM supports non-SMS-managed
data set creation and access of existing non-SMS-managed data sets.
Note: The creation of non-SMS-managed data sets is not recommended,
because DFM cannot save attributes designed to improve performance
or to enhance function. Non-SMS-managed data set creation by
DFM should only be used during the transition period
between DFM installation and the implementation of system-managed
storage. Once this transition is complete the
UNIT and
VOLUME parameters
should be removed from DFM00. Refer to
Tuning Distributed FileManager Startup Parameters in System PARMLIB for
additional information on the tunable parameters in DFM00.
- All data sets accessed must be cataloged in an integrated catalog
facility catalog.
- All data sets accessed must reside on direct access storage.
- All data sets must be one of the supported types in the next section.
z/OS DFSMS DFM Guide and Reference
Copyright IBM Corporation 1990, 2014