Scenario: Dynamically moving processors and memory resources using the HMC

Situation

You are the system administrator for a business recovery service center with IBM® Systems hardware. You use IBM Systems hardware primarily to test disaster recovery strategies for your clients. Each of your clients has a different system configuration. This means that, each time a client comes in, you must change the system configuration of your managed system.

To change the system configuration of your managed system, you decide to use dynamic partitioning. Whenever you have to move resources from one logical partition to another, you move the resources directly between the logical partitions without shutting down the logical partitions.

You finished testing for Client 1. You must now reconfigure the logical partitions for Client 2, who comes in tomorrow.

Objectives

The objective of this scenario is to change the configuration of the logical partitions by dynamically moving resources.

Details

The following table shows the system configuration required for client 2.

Prerequisites and assumptions

This scenario assumes that the following prerequisite steps have been completed and are operational before beginning the configuration steps:

1. The Hardware Management Console (HMC) was set and configured. For instructions, see Installing and configuring the HMC.
2. You read and understand the Logical partition overview.
3. You completed the tasks recommended for logical partition planning. For instructions, see Planning for logical partitions.
4. You removed the system from the manufacturing default configuration and moved the physical hardware to support a partitioned configuration. For instructions, see Creating logical partitions on a new or nonpartitioned server.
5. You logged in to the HMC with one of the following user roles:
   • Super administrator
   • Service representative
   • Product engineer
6. You created the logical partitions and partition profiles.
7. The managed system is configured for Client 1.

The following table displays the current configuration of each logical partition on the managed system.

Configuration steps

To change the configuration of your managed system so that it is ready for Client 2, you must complete the following tasks:

• Move two dedicated processors from the logical partition Test 2 to the logical partition Test 1.
• Move 2 GB of physical memory from the logical partition Test 2 to the logical partition Test 1.

To move two dedicated processors from one logical partition to another, complete the following steps on your HMC.

1. In the navigation pane of the HMC, open Systems Management, open Servers, and click the managed system on which the Test 2 logical partition is located.
2. In the work pane, select the Test 2 logical partition, click the Tasks button, and click Dynamic partitioning > Processor > Move.
3. Specify two processors in the To move column, select the Test 1 logical partition in Select Destination Partition, and click OK.

To move two physical memory units from one logical partition to another, complete the following steps on your HMC:

1. In the work pane, select the Test 2 logical partition, click the Tasks button, and click Dynamic partitioning > Memory > Move.
2. Enter the amount of physical memory that you want to move from the logical partition. You can enter the size in a combination of gigabytes (GB) plus megabytes (MB).
3. Select the logical partition to which you want to move the specified amount of physical memory and click OK.

When this is completed, the managed system is configured according to the needs of Client 2. The following table displays the current configuration of each logical partition on the managed system.