Figure 1 shows a logical diagram of the example sysplex named PLEXOF2C.

Note that in this example, the two signaling structures are allocated in two different coupling facilities (as specified in the coupling facility resource management (CFRM) policy). This would normally be done for high availability in the event of a coupling facility failure or loss of connectivity to a coupling facility, and is the recommended configuration. However, this separation is not required; the two signaling structures can be placed in the same coupling facility.

Figure 1. Example 4 — Diagram of PLEXOF2C