
Chapter 4. DFSMSrmm ACS support 143
3. ACS decides whether the entity is system managed or not. During
processing, the four PRE-ACS read-only variables can be used as input to the
decision.
4. For non-system managed tape, we enter DFSMSrmm ACS support. ACS
processing is called for storage group processing, and again for management
class processing.
5. DFSMSrmm calls EDGUX100 for its basic exit function.
4.1.3 Non-system managed tape libraries
A non-system managed tape library is all the volumes, shelves, and drives that
are not in an automated tape library dataserver or manual tape library. You might
know this as the traditional tape library