IBM eServer zSeries 900 Technical Guide

180 IBM eServer zSeries 900 Technical Guide

For additional details see the following link:

http://www.ibm.com/servers/eserver/zseries/pso/cftable.html

5.2.2 Model 100 Coupling Facility

The z900 Model 100 CF is designed to run CF images only. It is a standalone server that

cannot have any CPs. Its Processing Units (PUs) can only be assigned as ICF processors or

as System Assist Processors (SAPs). Unassigned PUs are treated as spares.

The model 100 server must be configured in LPAR mode and only IBM Coupling Facility

Control Code can run in Coupling Facility mode.

Characteristics of a z900 model 100 are:

򐂰 12 PUs, one to nine can be ICFs

򐂰 Two SAPs are assigned, and there is at least one spare PU.

򐂰 Four Memory Bus Adapters (MBAs) with up to 32 GB of memory

򐂰 24 Self Timed Interfaces (STIs).

򐂰 Up to 15 Logical Partitions (LPs) are supported on all models

򐂰 Can be upgraded to z900 general processor models

CFLEVEL 10

Requires z900 EC J10633 Driver 3C MCL 008

CFLEVEL 9

Requires z900 EC H25496 Driver 38 MCL 005 or

EC 25106 Driver 36 MCL 002

򐂰 Support for WLM Multisystem Enclaves. This

provides the ability to manage and report on

parallel work requests that are executed on

multiple OS/390 images.

򐂰 LPAR Cluster Structure

򐂰 XES CF List Structure Architecture

Extensions [also known as Message and

Queuing (MQ) Series].

򐂰 z/OS 1.1 and above is required to fully exploit

all the functions.

򐂰 All supported levels of z/OS or OS/390 with

PTFs can be used with CFLEVEL 9, but

do

not

take advantage of the enhancements.

򐂰 WLM Multisystem Enclaves is supported by

OS/390 2.9 and above.

򐂰 XES CF List Structure Architecture

Extensions requires MQ 5.2

a. Always consult the latest Preventive Service Planning information for 2064DEVICE and the

appropriate subset for the latest maintenance information.

Note: When migrating to a new CFCC level, lock, list, and cache structure sizes will

increase to support new functions. For example, when upgrading to CFCC level 10, the

required size of list and cache structures that contain data elements may increase by at

most 768K.

This adjustment can have an impact when the system allocates structures or copies

structures from one Coupling Facility to another at different CFCC levels.

The Coupling Facility structure sizer tool can size structures for you and takes into account

the amount of space needed for the current CFCC levels.

The CFSIZER tool can be found at:

http://www.ibm.com/servers/eserver/zseries/cfsizer

CFLEVEL Minimum software levels

a