Define the SMS-managed tape library environment to DFSMShsm by specifying (in the ARCCMDxx PARMLIB member) the DFSMShsm commands that work with the SMS constructs to define a tape library. SMS-managed tape libraries manage physical tape cartridges. DFSMShsm manages the data on those cartridges. For more information about defining the ARCCMDxx PARMLIB member, see Parameter libraries (PARMLIB).