YOGGIE YOGGIE MANAGEMENT SERVER Technical Information download pdf (Page 21)

Chapter 1. Introduction to LPAR on IBM System i5 3

The HMC is ordered as a required priced feature of any LPAR or CuOD configuration for new

orders or upgrades (MES), or shipped as a mandatory part of all high-end models.

The new System i5 systems have a new scheme storing and managing partition information.

In this new scheme you have Partition Profiles and System Profiles.

򐂰 Partition Profiles:

A partition profile is used to allocate resources such as processor units, memory and I/O

cards to a partition. Several partition profiles may be created for the same partition,

because no resource availability checking is performed when a partition profile is created.

Partitions can be created with access to all resources with one single check box, or user

defined resources. The use all resources check box is typically not used, since a use all

resources arrangement would be for non-partitioned servers.

As any partition can be defined to have access to any resource, there are two ways to

validate that partition profiles have no resource conflicts when creating an additional

partition:

– Attempt to power on the second partition. An error will be given if there are conflicts,

and depending on the resource conflict, the second partition may not start.

– Create a

System Profile which is a collection of partition profiles. The creation of the

system profile will validate the resources. A partition profile cannot be added to a

system profile if the partition resources are already committed to another partition

profile and are consider part of that system profile.

Processor and memory resources are specified as minimum, maximum, and a new type

called

Desired. If insufficient resources are available at partition activation time, the

desired configuration is not guaranteed, and the partition could be started with the

minimum option.

I/O resources can be configured as Required or Desired. A

Required resource will prevent

the partition from starting if it is not available, but a partition can start if a

Desired I/O

resource is not available.

Any OS/400 partition may be configured as a

Service Partition to be used as an

alternative or backup way of reporting errors from other OS/400 partitions to IBM Service

when the HMC is not available.

򐂰 System Profiles

A System Profile is an ordered list of partition profiles for a particular System i5. Multiple

system profiles can be stored on the HMC, allowing various partition configurations to be

activated/deactivated from one point. To change from one system profile to another, all

the running partitions must be shut down.

Several system profiles may be created to materialize different validated partition profiles

to be activated. For example:

Restructuring resources without using DLPAR. If during over night hours, holiday, or

period end processing, certain partitions were not being used (such as development),

it is possible to define a system profile that takes unused resources and allocates them to

another partition (such as production), as shown in Figure 1-2.

1 2 ... 16 17 18 19 20 21 22 23 24 25 26 ... 535 536

Comments to this Manuals

No comments

YOGGIE YOGGIE MANAGEMENT SERVER Technical Information Page 21

Comments to this Manuals