Cluster-related data sets
These are shareable data sets used in a multisystem environment. Cluster-related data sets should use system symbolics in their names for easier maintainability. For more information on system symbolics, see z/OS MVS Initialization and Tuning Reference.
While all cluster-related data sets can be combined on the same
volume, it is usually preferable to separate certain data sets from
others for performance or availability reasons. For example, the
following data sets should usually not be placed on the same volume:
- Primary and secondary RACF® databases
- JES spool and checkpoint data sets
- Primary and backup SMS data sets
- Primary and secondary couple data sets
Note: You should also consider placing the primary RACF database in the coupling facility.