Figure 1 shows the SETSYS commands that define a typical tape management system environment. Specify these commands in the ARCCMDxx PARMLIB member.

/***********************************************************************/
/*  SAMPLE SETSYS COMMANDS THAT DEFINE AN ENVIRONMENT FOR A            */
/*  TYPICAL TAPE MANAGEMENT SYSTEM.                                    */
/***********************************************************************/
/*
SETSYS CDSVERSIONBACKUP -
       BACKUPDEVICECATEGORY(TAPE)
SETSYS SELECTVOLUME(SCRATCH)
SETSYS TAPEDELETION(SCRATCHTAPE)
SETSYS TAPESECURITY(RACF)
SETSYS EXITON(ARCTVEXT)            /*  NOT NEEDED IF YOU ARE USING RMM */
/*

SETSYS SELECTVOLUME(SCRATCH)

The SCRATCH option of the SETSYS SELECTVOLUME command defines how initial and subsequent dump tapes are selected and how subsequent backup and migration tapes are selected.

SETSYS TAPEDELETION(SCRATCHTAPE)

The SCRATCHTAPE option of the SETSYS TAPEDELETION command directs DFSMShsm to remove empty tapes from DFSMShsm control. DFSMShsm notifies RMM of the tape’s new status through an internal interface. If you are using another tape management product, you must request that DFSMShsm use the ARCTVEXT exit by invoking the SETSYS EXITON(TV) command. For more information about the ARCTVEXT exit, refer to z/OS DFSMS Installation Exits.

SETSYS TAPESECURITY(RACF)

The RACF option of the SETSYS TAPESECURITY command directs DFSMShsm to automatically add RACF® protection to scratch tapes.

SETSYS EXITON(TV)

Programming interface information

Programming interface information The ARCTVEXT option of the SETSYS EXITON command directs DFSMShsm to invoke the tape volume exit, ARCTVEXT, when a DFSMShsm tape has been emptied. DFSMShsm releases control of a tape by performing a DELVOL function on the tape (also known as SETSYS TAPEDELETION processing).
 
When the ARCTVEXT exit is invoked, the code in the exit communicates to the tape management system whether the tape is no longer required by DFSMShsm and is eligible to be returned to the global scratch pool or is being returned to the specific scratch pool. The code for the exit is available from the vendors of the various tape management systems and, once the code has been installed into a LINKLIST library, the exit is invoked if you specify SETSYS EXITON(ARCTVEXT).
 

Note: You should only use the ARCTVEXT exit with non-IBM tape management systems, because DFSMShsm directly uses the DFSMSrmm interface (EDGTVEXT).

 
For more information about DFSMShsm tape management exits, see Managing tapes with DFSMShsm installation exits. End of programming interface information

End of programming interface information