Multiple z/OS images in the example system

Using multiple z/OS® images allows the processing of a single DFSMShsm host on one z/OS image or multiple DFSMShsm hosts on more than one z/OS image. In the example system, there is one DFSMShsm host per z/OS image. DFSMShsm is shown running under JES2. However, when the use of a single z/OS image or of JES3 affects the selection of DFSMShsm commands or the results attained with those commands, the differences that result from using JES3 instead of JES2 are explained.

Note: The z/OS images, tapes, and ML1 volumes shown in Figure 1 and Figure 2 are duplicated in both figures.