IBM eServer zSeries 900 Technical Guide

32 IBM eServer zSeries 900 Technical Guide

Table 2-1 Basic Mode

2.3.2 Logically Partitioned Mode

In Logically Partitioned Mode up to 15 logical partitions can be defined on any z900 model. A

logical partition can be defined to operate in one of the following image modes:

򐂰 ESA/390 mode, to run:

– An z/Architecture operating system image, only on dedicated or shared CPs.

– An ESA/390 operating system image, only on dedicated or shared CPs.

– A Linux operating system image, only on dedicated or shared CPs.

򐂰 ESA/390 TPF mode, to run:

– A TPF operating system image, only on dedicated or shared CPs.

򐂰 Coupling Facility mode, to run a CF image, by loading the CFCC into this logical partition.

This CF image can run either on:

– Dedicated

or shared CPs

– Dedicated

or shared ICFs

– Dedicated

and shared ICFs

– ICFs dedicated

and CPs shared

򐂰 Linux-only mode, to run:

– A Linux operating system image, on:

• Dedicated

or shared IFLs

• Dedicated

or shared CPs

– A z/VM operating system image, on:

• Dedicated

or shared IFLs

• Dedicated

or shared CPs

Table 2-2 shows all LPAR modes, required PU types and operating systems and which PU

types can be configured to a logical partition image. The available combinations of dedicated

(DED) and shared (SHR) processors are also shown. For all combinations, an image can also

have Reserved Processors defined, allowing nondisruptive image upgrades.

Table 2-2 LPAR Mode and PU usage

Basic Mode PU type Operating Systems

ESA/390 CPs z/Architecture operating systems

ESA/390 operating systems

Linux

ESA/390 TPF CPs TPF

LPAR Mode PU type Operating Systems PUs usage

ESA/390 CPs z/Architecture operating systems

ESA/390 operating systems

Linux

CPs DED

or CPs SHR

ESA/390 TPF CPs TPF CPs DED

or CPs SHR

Coupling

Facility

ICFs

and/or

CPs

CFCC ICFs DED

or ICFs SHR

or CPs DED or CPs SHR

or ICFs DED and ICFs SHR

or ICFs DED and CPs SHR

Linux Only IFLs

or

CPs

Linux

z/VM

IFLs DED or IFLs SHR

or CPs DED or CPs SHR