Book Image

vSphere High Performance Cookbook

Book Image

vSphere High Performance Cookbook

Overview of this book

VMware vSphere is the key virtualization technology in today's market. vSphere is a complex tool and incorrect design and deployment can create performance-related problems. vSphere High Performance Cookbook is focused on solving those problems as well as providing best practices and performance-enhancing techniques. vSphere High Performance Cookbook offers a comprehensive understanding of the different components of vSphere and the interaction of these components with the physical layer which includes the CPU, memory, network, and storage. If you want to improve or troubleshoot vSphere performance then this book is for you! vSphere High Performance Cookbook will teach you how to tune and grow a VMware vSphere 5 infrastructure. This book focuses on tuning, optimizing, and scaling the infrastructure using the vSphere Client graphical user interface. This book will enable the reader with the knowledge, skills, and abilities to build and run a high-performing VMware vSphere virtual infrastructure. You will learn how to configure and manage ESXi CPU, memory, networking, and storage for sophisticated, enterprise-scale environments. You will also learn how to manage changes to the vSphere environment and optimize the performance of all vSphere components. This book also focuses on high value and often overlooked performance-related topics such as NUMA Aware CPU Scheduler, VMM Scheduler, Core Sharing, the Virtual Memory Reclamation technique, Checksum offloading, VM DirectPath I/O, queuing on storage array, command queuing, vCenter Server design, and virtual machine and application tuning. By the end of this book you will be able to identify, diagnose, and troubleshoot operational faults and critical performance issues in vSphere.
Table of Contents (15 chapters)
vSphere High Performance Cookbook
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

vSphere Fault Tolerance design and its impact


It all depends on the workloads whether you want to configure Fault Tolerance (FT) protected Virtual Machines. One of the major reasons to choose FT is, if you require zero or near zero downtime for a critical workload. If you perform a current state analysis of an existing infrastructure and found some critical workloads already protected in physical infrastructure, it is most likely that these workloads require protection in a VMware virtual infrastructure as well. FT is simple to configure and can offer a wide range of workloads to be protected. However, FT works for uniprocessor VMs, which is a deal killer for most VMs that would otherwise get FT.

However, there are number of limitations associated with the configuration of FT. Many fundamental virtualization benefits are lost, including the use of virtual machine snapshots and VMware vSphere Storage vMotion.

There are number of prerequisites and configurations on the infrastructure side which...