IBM DS8000 manual 2 DS8300 Lpar implementation, DS8300 Model 9A2 Lpar and storage facility image

Processor complex 0

LPAR01

LPAR02

LPARxy

x=Processor complex number y=Storage facility number

Storage

Facility

Image 1

Storage

Facility

Image 2

Processor complex 1

LPAR11

LPAR12

Figure 3-2 DS8300 Model 9A2 - LPAR and storage facility image

The DS8300 series incorporates two eServer p5 570s. We call each of these a processor complex. Each processor complex supports one or more LPARs. Currently each processor complex on the DS8300 is divided into two LPARs. An LPAR is a set of resources on a processor complex that support the execution of an operating system. The storage facility image is built from a pair of LPARs, one on each processor complex.

Figure 3-2shows that LPAR01 from processor complex 0 and LPAR11 from processor complex 1 instantiate storage facility image 1. LPAR02 from processor complex 0 and LPAR12 from processor complex 1 instantiate the second storage facility image.

Important: It is important to understand that an LPAR in a processor complex is not the same as a storage facility image in the DS8300.

3.2.2 DS8300 LPAR implementation

Each storage facility image will use the machine type/model number/serial number of the DS8300 Model 9A2 base frame. The frame serial number will end with 0. The last character of the serial number will be replaced by a number in the range one to eight that uniquely identifies the DS8000 image. Initially, this character will be a 1or a 2, because there are only two storage facility images available. The serial number is needed to distinguish between the storage facility images in the GUI, CLI, and for licensing and allocating the licenses between the storage facility images.

The first release of the LPAR functionality in the DS8300 Model 9A2 provides a split between the resources in a 50/50 ratio as depicted in Figure 3-3 on page 50.

Chapter 3. Storage system LPARs (Logical partitions) 49