Power Systems Logical partitioning Power Systems Logical partitioning Note Before using this information and the product it supports, read the information in “Notices” on page 233. This edition applies to IBM AIX Version 6.1, to IBM AIX 5L™ Version 5.3, to IBM i 6.1 (product number 5722-SS1) , to IBM Virtual I/O Server version 2.1.2.0, and to all subsequent releases and modifications until otherwise indicated in new editions. This version does not run on all reduced instruction set computer (RISC) models nor does it run on CISC models. © Copyright IBM Corporation 2007, 2009. US Government Users Restricted Rights – Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp. Contents Logical partitioning ...............................1 What's new in Logical partitioning ............................1 Logical partition overview ...............................2 Benefits of logical partitioning ............................2 Sharing resources between logical partitions ........................3 Managed systems.................................5 Manufacturing default configuration ..........................5 Logical partitioning tools ..............................6 Hardware Management Console ...........................6 Partition profile ...............................7 System profile ...............................11 Partitioning with the Integrated Virtualization Manager ..................11 Virtual Partition Manager.............................13 Physical and virtual hardware resources .........................14 Processors ..................................14 Dedicated processors .............................16 Shared processors ..............................17 Virtual processors ..............................19 Memory ..................................20 Dedicated memory ..............................21 Shared memory ...............................24 Terminal and console options for logical partitions ....................49 Hardware Management Console terminal and console options ...............50 Operations Console for IBM i logical partitions ....................51 Twinaxial console for IBM i logical partitions .....................52 I/O devices .................................54 Virtual adapters ...............................54 Host Ethernet Adapter.............................65 Tagged resources for IBM i logical partitions .....................67 I/O pools for IBM i logical partitions........................73 Switchable devices for IBM i logical partitions .....................73 High-speed link (HSL) OptiConnect for IBM i logical partitions ...............74 Virtual OptiConnect for IBM i logical partitions ....................74 Expansion unit ...............................75 5250 CPW for IBM i logical partitions ........................75 Barrier-synchronization register...........................75 Application support for Linux logical partitions ......................76 Examples: Logically partitioned systems .........................77 Scenarios: Logical partitions ..............................78 Scenario: Creating a logical partition using the HMC ....................78 Scenario: Using partition profiles with the HMC ......................79 Scenario: Using system profiles with the HMC ......................81 Scenario: Dynamically moving processors and memory resources using the HMC ...........83 Scenario: Capacity on Demand for Linux ........................85 Planning for logical partitions .............................86 System Planning Tool ...............................88 Configuration requirements for shared memory ......................89 Preparing to configure shared memory .........................91 Preparing to configure shared memory on a system that is managed by the Integrated Virtualization Manager ..................................92 Preparing to configure shared memory on a system that is managed by an HMC ..........93 Determining the size of the shared memory pool ......................95 Software licensing for IBM licensed programs on logical partitions ................96 Minimum hardware configuration requirements for logical partitions ...............99 Partitioning with the HMC ..............................100 Creating logical partitions .............................101 © Copyright IBM Corp. 2007, 2009 iii Creating logical partitions on a new or nonpartitioned server ................101 Creating IBM i logical partitions on a new or nonpartitioned managed system .........101 Creating AIX or Linux logical partitions on a new or nonpartitioned managed system .......106 Creating additional logical partitions ........................111 Creating additional partition profiles ........................112 Creating a system profile ............................113 Creating an AIX logical partition that uses IBM i virtual I/O resources .............113 Creating a network-server description and a network-server storage space for an AIX logical partition 114 Connecting to the virtual console for an AIX logical partition ...............116 Starting the network-server description for an AIX logical partition .............116 Creating an IBM i logical partition that uses IBM i virtual I/O resources ............117 Creating a network-server description and a network-server storage space for an IBM i logical partition that uses IBM i resources ...........................118 Connecting to the virtual console for an IBM i logical partition that uses IBM i virtual I/O resources . 121 Starting the network-server description for an IBM i logical partition that uses IBM i virtual I/O resources .................................121 Creating a Linux logical partition that uses IBM i virtual I/O resources .............122 Creating an NWSD and a network-server storage space for a Linux logical partition .......122 Connecting to the virtual console for a Linux logical partition ...............124 Starting the network-server description for a Linux logical partition .............125 Designating the service logical partition for your managed system ..............125 Resetting the managed system to a nonpartitioned configuration ...............126 Deleting a logical partition ............................128 Configuring virtual resources for logical partitions .....................129 Configuring a virtual Ethernet adapter ........................129 Configuring a virtual fibre channel adapter ......................130 Configuring physical ports on a Host Ethernet Adapter ..................131 Configuring shared processor pools .........................132 Configuring the shared memory pool ........................133 Creating a logical Host Ethernet Adapter for a running logical partition .............134 Creating a shared Ethernet adapter for a VIOS logical partition using the HMC ..........135 Creating a virtual disk for a VIOS logical partition using the HMC ..............136 Creating storage pools .............................137 Reassigning logical partitions to shared processor pools ..................137 Managing the shared memory pool ..........................138 Changing the size of the shared memory pool .....................138 Adding a paging VIOS partition to the shared memory pool ................139 Changing the paging VIOS partitions assigned to the shared memory pool............140 Removing a paging VIOS partition from the shared memory pool ...............143 Reinstalling the Virtual I/O Server of a paging VIOS partition ................145 Adding and removing paging space devices to and from the shared memory pool .........146 Deleting the shared memory pool .........................147 Managing logical partitions.............................147 Activating a logical partition ...........................147 Activating a system profile ............................148 Shutting down and restarting logical partitions .....................149 Shutting down and restarting AIX in a logical partition .................149 Shutting down IBM i logical partitions .......................150 Shutting down and restarting Linux in a logical partition.................154 Shutting down and restarting Virtual I/O Server in a logical partition ............155 Managing partition profiles for logical partitions ....................158 Copying a partition profile ...........................158 Changing partition profile properties .......................158 Deleting a partition profile ...........................159 Managing system profiles ............................160 Copying a system profile ...........................160 Changing a system profile ...........................160 Validating a system profile ...........................160 Deleting a system profile ...........................161 Managing logical partition resources dynamically ....................161 Managing dedicated memory dynamically .....................161 iv Logical partitioning Managing shared memory dynamically.......................164 Managing processor resources dynamically .....................166 Managing physical I/O devices and slots dynamically .................169 Managing virtual adapters dynamically ......................171 Managing 5250 CPW dynamically ........................174 Scheduling the movement of resources to and from logical partitions.............175 Saving the logical partition configuration to a partition profile ...............176 Managing virtual resources for Virtual I/O Server logical partitions using the Hardware Management Console ..................................177 Changing