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Coupling facility structure size parameters for OEM (non-IBM) structures

NOTICE

IBM intends to sunset the CFSizer web application in 4Q26. Its function has been incorporated into the z/OSMF Sysplex Management service’s CFRM Policy Editor beginning at z/OS V2R5, and as part of that platform the sizing function is both formally supported and more robust. IBM recommends that all CFSizer users transition to using z/OSMF for workload-based structure sizing. A discussion of the z/OSMF structure sizing support as well as documentation can be found at the following links:

Note: The sunset of the CFSizer web application will not impact the availability of the SIZER utility.

To size an OEM coupling facility structure, click the product check box and provide the requested input data. Default values have been provided for all the input data fields. These are recommended default values from IBM product groups that may or may not be reflective of your environment. Modify the defaults as appropriate and then click Submit button below to size this structure.

Number of lock entries	Max number of connectors	Max number of record data entries	Alterable
OEM Lock structure
OEM lock structure help

Asynchronous Duplexing

List headers	Lock table entry count	Adjunct data	Alterable
OEM List structure
OEM list structure help


Max number of list entries	Max number of data elements	Max number of data elements per entry	Reference option


Data element size descriptor	Data element size value	Key type	Max number of EMCs

Max number of cache directory entries	Max number of data elements	Max number of data elements per entry	Alterable
OEM Cache structure
OEM cache structure help


Number of castout classes	Number of storage classes	Name class mask pattern	Adjunct data


User data field order	Data element size descriptor	Data element size value

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