IBM Z9, Planning Manual

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Appendix A. Coupling Facility Control Code Support
Coupling facility control code is Licensed Internal Code (LIC) that supports the
following coupling facility limits:
Table A-1. Coupling Facility Limits at Different Coupling Facility Code Levels
Coupling
Facility Limit
Coupling Facility Code Level
Level 15 Level 14 Level 13 Level 12 Level 11 Level 10
Level 9
(Service
Level
2.00 and
Higher)
Level 9
(Service
Level
less than
2.00)
Level
8-7
Maximum
number of CPs 16 16 16 16 16 16 16 12 12
Storage
increment 512 KB 256 KB 256 KB 256 KB 256 KB 256 KB 256 KB 256 KB 256 KB
Structure ID limit 1023 1023 1023 1023 1023 1023 1023 1023 1023
Retry buffer limit 2039 1799 1799 1559 1559 1559 1559 519 519
Facility
information 64 bytes 64 bytes 64 bytes 64 bytes 64 bytes 64 bytes 64 bytes 64 bytes 64 bytes
Maximum list
element
characteristic 4 4 4 4 4 4 4 4 4
Maximum lock
table entry
characteristic 5 5 5 5 5 5 5 5 5
User identifier
limit 32 32 32 32 32 32 32 32 32
Maximum data
area element
characteristic 4 4 4 4 4 4 4 4 4
Local cache
identifier limit 255 255 255 255 255 255 255 255 255
Storage class
limit 63 63 63 63 63 63 63 63 63
Castout class
limit 1024 1024 1024 1024 1024 1024 1024 1024 1024
Legend
Maximum number of CPs
Indicates the maximum number of CPs that can be used by a
coupling facility logical partition.
Storage increment
Indicates that storage allocation requests are rounded up in units of
256 KB (512 KB for CF Level 15).
Structure ID limit
Cache and list structure ID range 1–1023.
© Copyright IBM Corp. 2005, 2008
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