Book Image

vSphere High Performance Cookbook - Second Edition - Second Edition

By : Kevin Elder, Christopher Kusek, Prasenjit Sarkar
Book Image

vSphere High Performance Cookbook - Second Edition - Second Edition

By: Kevin Elder, Christopher Kusek, Prasenjit Sarkar

Overview of this book

vSphere is a mission-critical piece of software for many businesses. It is a complex tool, and incorrect design and deployment can create performance related issues that can negatively affect the business. This book is focused on solving these problems as well as providing best practices and performance-enhancing techniques. This edition is fully updated to include all the new features in version 6.5 as well as the latest tools and techniques to keep vSphere performing at its best. This book starts with interesting recipes, such as the interaction of vSphere 6.5 components with physical layers such as CPU, memory, and networking. Then we focus on DRS, resource control design, and vSphere cluster design. Next, you’ll learn about storage performance design and how it works with VMware vSphere 6.5. Moving on, you will learn about the two types of vCenter installation and the benefits of each. Lastly, the book covers performance tools that help you get the most out of your vSphere installation. By the end of this book, you will be able to identify, diagnose, and troubleshoot operational faults and critical performance issues in vSphere 6.5.
Table of Contents (17 chapters)
Title Page
Credits
About the Authors
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Introduction


Device and I/O virtualization involves managing the routing of I/O requests between virtual devices and the shared physical hardware. Software-based I/O virtualization and management, in contrast to a direct pass through to the hardware, enables a rich set of features and simplified management. With networking, virtual NICs and virtual switches create virtual networks between VMs that are running on the same host, without the network traffic consuming bandwidth on the physical network.

NIC Teaming consists of multiple physical NICs and provides failover and load balancing for VMs. VMs can be seamlessly relocated to different systems using VMware vMotion while keeping their existing MAC addresses and the running state. The key to effective I/O virtualization is to preserve these virtualization benefits while keeping the added CPU overhead to a minimum.

A hypervisor virtualizes the physical hardware and presents each VM with a standardized set of virtual devices. These virtual devices...