Optimizing data collection for the DFSMSrmm Status feature

This topic describes ways to optimize data collection for the DFSMSrmm Status feature.

Follow these guidelines to optimize use of the DFSMSrmm Status feature:

In a multi-system, shared hard-disk-drive environment where the DFSMSrmm subsystem is running on multiple systems and sharing a single CDS, only enable OMEGAMON® DFSMSrmm collection on one of the connected systems, ideally a non-production system. This behavior avoids collection of the same DFSMSrmm information on multiple systems, and places the work for collection on the system that is most lightly loaded.
Use product-provided queries and workspaces rather than user-created, because they have been crafted and tuned for maximum performance. User-defined queries can incur significant overhead when a very large number of datasets or volumes must to be examined to resolve the predicates.
User-created situations written against the DFSMSrmm Summary table should not have their Sampling Interval smaller than the DFSMSrmm collection cycle, because attributes are not updated more often than that.