Coupling Facility


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Coupling Facility

The hardware and software that turns an IBM mainframe Base Sysplex system into a Parallel Sysplex. It is made up of special microcode built into the machine, and the CFCC operating system (Coupling Facility Control Code). It can be implemented as a stand-alone machine, in an LPAR logical partition or in a spare processor that becomes an Internal Coupling Facility (ICF).

The Coupling Facility allows up to 32 coupled systems to communicate using three coupling structures: "list" for simple data, "cache" for data buffering and "lock" for control of access to ensure data integrity. See Parallel Sysplex.
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1 of the coupling facility to be set up on the lot 1; of n.
ICF: Internal Coupling Facility--used for redirecting coupling facility cycles in a data sharing environment
Any unactivated processors in a T-Rex book can be activated as a coupling facility (used for Parallel Sysplex clustering) or as SAPs.
Protocol Transparency/Low Latency--Most DWDM systems support Fibre Channel, ESCON, ATM, FICON, GbE, SONET/SDH, Sysplex Coupling Facility timers, and video.
CA's DB2 and IMS tools - For leveraging capabilities of the z10 such as zIIP processors and memory and coupling facility improvements to enhance management of DB2 and IMS applications.
Tenders are invited for Supply, Erection And Commissioning Of 18 Windows Alarm Annunicator Panel, Window Size: 30X30 Mm With Hooter And Push Button Set Along With Coupling Facility.
S/390 systems are already very good at sharing data among themselves through the IBM's Parallel Sysplex Coupling Facility.
Consequently, the FSP 3000 supports native-speed performance for synchronous and switched data services such as SONET and 155-, 622 and 2,488-Mbps Asynchronous Transfer Mode (ATM); data-center protocols such as Enterprise System Connection (ESCON), Fiber Connection (FICON), Fiber Channel and Coupling Facility with Sysplex Timer, and local-area-network (LAN) applications such as Fiber Distributed Data Interface (FDDI), Fast Ethernet and Gigabit Ethernet.
The exploitation of IBM's cross-system coupling facility (XCF) visibly improves performance, and allows ESP users to extend full workload management capabilities into large Parallel Sysplex environments.
Pilot P9 is fully compatible with Parallel Sysplex environments, and includes features such as an Integrated Coupling Facility (IntCF), high-speed Integrated System Bus (ISB) and Internal Coupling (IC) channels, allowing communication with a Parallel Sysplex coupling facility at much higher data rates.
Copenhagen is the client in relation to the establishment of coupling facility.
Coupling facility LPARs using ICs can simultaneously use external coupling links or ISBs.