Explanation: SMF(smfid) | NOSMF are mutually exclusive, optional parameters specifying whether DFSMShsm writes SMF records that contain DFSMShsm statistics.
SMF(smfid) specifies that DFSMShsm write SMF records in the SYS1.MANX or SYS1.MANY system data sets. For smfid, substitute a record identification. Use SMF user codes for the record identification in the range of 128 to 255.
If you specify smfid, DFSMShsm writes records with SMF identifications of smfid and smfid+1. Records with an identification of smfid contain daily statistics (DSR) and volume statistics (VSR). Records with an identification of smfid+1 contain function statistics (FSR) and ABARS function statistics (WWFSR).
NOSMF specifies that no SMF records are to be written.
SMS relationship: Parameter differs in meaning when applied to SMS-managed or non-SMS-managed DASD volumes or data sets.
SETSYS default: None.
DFSMShsm default: If you do not specify either parameter on any SETSYS command, the DFSMShsm default is NOSMF.
Additional information on this subject is available in the z/OS DFSMShsm Implementation and Customization Guide.