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vSphere Resource Management Guide
ESX 4.0 ESXi 4.0 vCenter Server 4.0

EN-000107-00

vSphere Resource Management Guide

You can find the most up-to-date technical documentation on the VMware Web site at: http://www.vmware.com/support/ The VMware Web site also provides the latest product updates. If you have comments about this documentation, submit your feedback to:docfeedback@vmware.com

©

2006–2009 VMware, Inc. All rights reserved. This product is protected by U.S. and international copyright and intellectual property laws. VMware products are covered by one or more patents listed at http://www.vmware.com/go/patents. VMware, the VMware “boxes” logo and design, Virtual SMP, and VMotion are registered trademarks or trademarks of VMware, Inc. in the United States and/orother jurisdictions. All other marks and names mentioned herein may be trademarks of their respective companies.

VMware, Inc. 3401 Hillview Ave. Palo Alto, CA 94304 www.vmware.com

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VMware, Inc.

Contents

About This Book 5

1 Getting Started with Resource Management 7
What Is Resource Management? 7 Configuring Resource Allocation Settings 8 Viewing Resource Allocation Information11 Admission Control 14

2 Managing CPU Resources 15

CPU Virtualization Basics 15 Administering CPU Resources 16

3 Managing Memory Resources 23

Memory Virtualization Basics 23 Administering Memory Resources 26

4 Managing Resource Pools 35

Why Use Resource Pools? 36 Create Resource Pools 37 Add Virtual Machines to a Resource Pool 38 Removing Virtual Machines from a Resource Pool 39Resource Pool Admission Control 39

5 Creating a DRS Cluster 43

Admission Control and Initial Placement 44 Virtual Machine Migration 45 DRS Cluster Prerequisites 47 Create a DRS Cluster 48 Set a Custom Automation Level for a Virtual Machine 49 Disable DRS 50

6 Using DRS Clusters to Manage Resources 51
Using DRS Rules 51 Adding Hosts to a Cluster 53 Adding Virtual Machines to a Cluster54 Remove Hosts from a Cluster 55 Removing Virtual Machines from a Cluster 56 DRS Cluster Validity 56 Managing Power Resources 60

VMware, Inc.

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vSphere Resource Management Guide

7 Viewing DRS Cluster Information 65
Viewing the Cluster Summary Tab Using the DRS Tab 67 65

8 Using NUMA Systems with ESX/ESXi 71

What is NUMA? 71 How ESX/ESXi NUMA Scheduling Works 72 VMware NUMAOptimization Algorithms and Settings 73 Resource Management in NUMA Architectures 74 Specifying NUMA Controls 75

A Performance Monitoring Utilities: resxtop and esxtop 79
Using the esxtop Utility 79 Using the resxtop Utility 79 Using esxtop or resxtop in Interactive Mode 80 Using Batch Mode 94 Using Replay Mode 95

B Advanced Attributes 97

Set Advanced Host Attributes 97 Set AdvancedVirtual Machine Attributes

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Index 101

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VMware, Inc.

About This Book
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The vSphere Resource Management Guide describes resource management for vSphere environments. Its focus is on the following major topics:
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Resource allocation and resource management concepts Virtual machine attributes and admission control Resource pools and how to manage them Clusters, VMwareDistributed Resource Scheduler (DRS), VMware Distributed Power Management (DPM), and how to work with them Advanced resource management options Performance considerations
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The vSphere Resource Management Guide covers ESX , ESXi, and vCenter Server.

Intended Audience
This manual is for system administrators who want to understand how the system manages resources and how they cancustomize the default behavior. It’s also essential for anyone who wants to understand and use resource pools, clusters, DRS, or VMware DPM. This manual assumes you have a working knowledge of VMware ESX and VMware ESXi and of vCenter Server.

Document Feedback
VMware welcomes your suggestions for improving our documentation. If you have comments, send your feedback to docfeedback@vmware.com....
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