Cross-System Coupling Facility (XCF)

The cross-system coupling facility (XCF) component of z/OS manages communications between applications in a sysplex. XCF services allow authorized programs in a sysplex to communicate with programs on the same MVS system or other MVS systems. If a system fails, XCF services also provide the capability for batch jobs and started tasks to be restarted on another eligible system in the sysplex.

z/OS XCF allows up to 32 z/OS systems to communicate in a sysplex.

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