The installation needs to know what level of connectivity each system in the sysplex must have to your application's structure in a coupling facility. If all systems in the sysplex must be connected to the structure (IXLCONN CONNECTIVITY=SYSPLEX), the installation must be aware that your application will fail unless they have configured their systems and coupling facilities accordingly. If your application requires that the structure be allocated in the coupling facility that provides the best global connectivity to systems in the sysplex (IXLCONN CONNECTIVITY=BESTGLOBAL), the installation must attempt to configure their sysplex with the systems most important to the application attached to the same coupling facility and with the highest SFM weights.

An additional requirement for the installation to understand is the rebuild protocol that your application follows with regard to the connectivity requirement. If your connectivity requirement is CONNECTIVITY=SYSPLEX, the rebuild will not be successful until a sysplex-connected coupling facility is available. Therefore, to allow for rebuild that is necessitated by a loss of connectivity or in which LOCATION=OTHER has been specified, the preference list for the structure in the CFRM policy must contain the names of at least two fully-connected coupling facilities.