For CICSPlex® SM’s purposes, a CICSplex is any grouping of CICS systems that you want to manage and manipulate as if they were a single entity. That is, a CICSplex is a management domain, made up of those CICS systems for which you want to establish a single system image (SSI). A CICSplex managed by CICSPlex SM could include every CICS system in your enterprise. Alternatively, you could define multiple CICSplexes, each of which would include a logical grouping of CICS® systems. For example, a CICSplex could comprise all CICS systems on a particular MVS image, or all CICS systems accessible by a subset of your users, or all CICS systems serving a particular geographical area. Furthermore, the composition of a CICSplex can be altered without affecting the functions of the underlying CICS systems. The CICS systems in a single CICSplex managed by CICSPlex SM do not have to be explicitly connected to each other for management purposes.
The most significant facts about a CICSplex managed by CICSPlex SM are:
CICSPlex SM enables you to define subsets of a CICSplex, which are known as CICS system groups. CICS system groups are not mutually exclusive, and can reference the same CICSPlex SM definitions. Thus, if you decide to include every CICS system in your enterprise in a single CICSplex, there are mechanisms for managing groups of CICS systems within the CICSplex as if each group were a single system.
You can assign an unlimited number of CICS systems and CICS system groups to an existing CICSplex.
Although you can define a CICS system to only one CICSplex, you can assign a CICS system to multiple CICS system groups within the CICSplex. You can also assign the CICS system group to any number of other CICS system groups.
[[ Contents Previous Page | Next Page Index ]]