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Coupling Facility |
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Coupling FacilityThe 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). How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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The Coupling Facility acts like a distributed lock manager that manages the access to blocks of data held in systems' local caches. 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. Coupling facility LPARs using ICs can simultaneously use external coupling links or ISBs. |
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