Enabling the DFSMSrmm subsystem interface

Enable the DFSMSrmm subsystem interface to ensure that the interface starts every time you IPL and to ensure that users cannot use tapes before the DFSMSrmm subsystem starts. To enable DFSMSrmm, change the IEFSSNxx member of SYS1.PARMLIB. Add EDGSSSI, as the DFSMSrmm subsystem initialization program, as shown in Figure 1.

Note: The DFSMSrmm subsystem can be defined to allow the SSI initialization routine for DFSMSrmm to be invoked in parallel with other SSI initialization routines. See z/OS MVS Initialization and Tuning Guide for more information.

Figure 1. Changing SYS1.PARMLIB IEFSSNxx

SUBSYS SUBNAME(JES2)              /* JES2 PRIMARY SUBSYSTEM START   */
  PRIMARY(YES)  START(YES)
SUBSYS SUBNAME(DFRM)              /* Name of the DFSMSrmm subsystem */
  INITRTN(EDGSSSI)                /* RMM initialization routine     */
SUBSYS SUBNAME(AOPA)              /* Netview                        */

Figure 1 shows the correct relative position of the DFSMSrmm subsystem, updated to include the initialization program.