
Coupling Facility
Mainframe computer, Personal computer hardware, IBM Parallel Sysplex
Germain Adriaan(Editor)
Brev Publishing
Published on 27. April 2026
Book
Paperback/Softback
52 pages
978-613-5-99597-8 (ISBN)
Description
Please note that the content of this book primarily consists of articles
available from Wikipedia or other free sources online. In IBM mainframe
computers, a Coupling Facility or CF is a piece of computer hardware
which allows multiple processors to access the same data. A Parallel
Sysplex relies on one or more Coupling Facilities. A coupling facility
is a mainframe processor, with memory and special channels, and a
specialised operating system called Coupling Facility Control Code. It
has no I/O devices, other than the CF links. The information in the CF
resides entirely in memory as CFCC is not a virtual memory operating
system. A CF typically has a large memory - of the order of several
gigabytes. In principle any IBM mainframe can serve as a coupling
facility. The CF runs no application software. When originally
introduced, the CFCC executed in a separate mainframe unit that was
essentially a processor without I/O facilities other than the CF links.
Later IBM enabled the use of an Internal Coupling Facility where the
CFCC runs in an logical partition defined in standard processor complex
and communicates over internal links within that processor complex
hardware. Links to another processor unit are over copper cables.
More details
Language
English
Place of publication
United States
Product notice
Paperback (trade)
Unsewn / adhesive bound
Dimensions
Height: 220 mm
Width: 150 mm
Thickness: 4 mm
Weight
96 gr
ISBN-13
978-613-5-99597-8 (9786135995978)
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Schweitzer Classification