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vSphere High Performance Cookbook - Second Edition

You're reading from   vSphere High Performance Cookbook - Second Edition Recipes to tune your vSphere for maximum performance

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Product type Paperback
Published in Jun 2017
Publisher
ISBN-13 9781786464620
Length 338 pages
Edition 2nd Edition
Tools
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Authors (3):
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 Elder Elder
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Elder
Christopher Kusek Christopher Kusek
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Christopher Kusek
Prasenjit Sarkar Prasenjit Sarkar
Author Profile Icon Prasenjit Sarkar
Prasenjit Sarkar
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Toc

Table of Contents (17) Chapters Close

Title Page
Credits
About the Authors
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface
1. CPU Performance Design FREE CHAPTER 2. Memory Performance Design 3. Networking Performance Design 4. DRS, SDRS, and Resource Control Design 5. vSphere Cluster Design 6. Storage Performance Design 7. Designing vCenter on Windows for Best Performance 8. Designing VCSA for Best Performance 9. Virtual Machine and Virtual Environment Performance Design 10. Performance Tools

DPM and its impact


VMware vSphere Distributed Power Management (also known as vSphere DPM) continuously monitors resource requirements and power consumption across a VMware vSphere DRS cluster. When your vSphere HA cluster needs fewer resources, it consolidates workloads and powers off unused ESXi hosts so that it can reduce power consumption. However, VMs are not affected because DRS moves the running VMs around as needed without downtime before the hosts power off. ESXi hosts are kept powered off during periods of low resource use. But when there is a need for more resources, then DPM powers on these ESXi hosts for the VMs to use. vSphere DPM uses three techniques to bring the host out of standby mode, and these techniques are as follows:

  • Intelligent Platform Management Interface (IPMI)
  • Hewlett-Packard Integrated Lights-Out (iLO)
  • Wake on LAN (WOL)

If a host supports all of them, then the order of the technique chosen for use by DPM is as shown in the preceding list. However, for each of these...

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