Setting up DFSMSrmm disposition processing

DFSMSrmm disposition processing is optional and provides support for these functions:

Providing operators with information to help them perform tasks like moving a tape to a specific location
Generating sticky labels
Updating the location where a volume resides.

You can request DFSMSrmm disposition processing by identifying a disposition control data set using the DFSMSrmm parmlib EDGRMMxx OPTION DISPDDNAME operand and optionally coding the same DD name in a job step that creates or references a tape data set. Figure 2 shows how you might code the DD name in a job step. DFSMSrmm disposition processing occurs at CLOSE and EOV for each volume. DFSMSrmm does not provide support for asynchronous processing in a separate job step.

When you do not code the optional disposition DD name, you can create sticky labels, but you must use the EDG_EXIT100 installation exit to request the label to be produced.

At CLOSE and EOV time, DFSMSrmm always prepares a sticky label using one of the default label layouts depending on the volume mounted. The prepared label is only printed when the sticky label is requested. You request the label either by using the options in the disposition control file or by using the EDG_EXIT100 installation exit to request the label. In any case, you can customize the label and the location processing using the EDG_EXIT100 installation exit.

If you use the input disposition control file and, optionally, customize with the EDG_EXIT100 installation exit, DFSMSrmm disposition processing can be expanded to support:

Messages that are issued to one or more route codes by defining multiple messages in the disposition control file.
Suppression of label output you might have set up using the control file. Modify label output by using the EDG_EXIT100 installation exit.
Assignment of loan location, storage location, or library location for a volume.