DFSMShsm manages SMS-managed storage by data sets. That is, the specification for how to treat each data set on a volume is contained in the management class associated with that data set. The storage management subsystem determines to which volume the data set is recalled.
To view the consolidation of all of the DFSMShsm commands, storage group attributes, and management class attributes that show the automatic storage management of the example system, see Consolidated commands, storage group definitions, and management classes for the example system.