The Sysplexes Coupling Facility workspace allows you to display coupling facility information for all your monitored sysplexes. The coupling facility acts as a shared storage device, allowing address spaces on separate z/OS images to share data buffers and messages. The views in this workspace provide an overview of coupling facility resources, which allows you to ensure that connections are working, that an acceptable number of structures are defined within the coupling facility, that CPU and storage are used properly, and that I/O rates are maximized.