
8 Converting to DFSMSrmm from ASG-ZARA or AutoMedia
When multiple systems exist, then they can share the same control data set. The
control data set cannot be a SYS1 data set if the control data set is to be shared.
Figure 1-4 shows the structure in this environment.
Figure 1-4 DFSMSrmm in a multisystem environment
When multiple systems share one CDS, you can use Global Resource
Serialization (GRS) resource definition to solve the possible contention
problems. Refer to “GRSRNLxx (optional) - Global resource serialization
resourcename list” on page 80 for details on how to customize GRS reserve and
release actions for DFSMSrmm.
1.1.3 What are ...