Book Image

Learning VMware vSphere

By : Rebecca Fitzhugh, Abhilash G B
Book Image

Learning VMware vSphere

By: Rebecca Fitzhugh, Abhilash G B

Overview of this book

Computer virtualization is a method to enable the running of multiple application workloads on a machine to achieve efficient utilization and reduce the number of physical machines in a data center. This has now become the foundation of many modern day data centers. What began as a technology to virtualize x86 architecture has now grown beyond the limits of a server’s hardware and into the realm of storage and network virtualization. VMware is currently the market leader in developing data center virtualization solutions. This book goes into the details of designing and implementing VMware solutions that form the foundation of a VMware infrastructure. The book begins by introducing you to the concepts of server virtualization followed by the architecture of VMware’s hypervisor – ESXi and then by its installation and configuration. You then learn what is required to manage a vSphere environment and configure advanced management capabilities of vCenter. Next you are taken through topics on vSphere Networking, Storage, ESXi Clustering, Resource Management and Virtual Machine Management. You will then be introduced to SSL Certificate Management and its use in a vSphere environment. Finally, you will learn about the lifecycle management of a vSphere environment by effectively monitoring, patching and upgrading vSphere components using Update Manager. By the end of the book, you will know how to use VMware’s vSphere suite of components to lay the foundation of a modern day virtual infrastructure.
Table of Contents (18 chapters)
Learning VMware vSphere
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface

The need for a software virtual switch


Most physical machines will have one or more network cards that will not only enable them to communicate with other networked components but also provide a unique network identity in terms of a MAC address and an IP address. Now, when you use a single machine to host several virtual machines running the same traditional operating systems that were once run on a physical machine, there surfaces a challenge that needs to be addressed. The challenge is: how do we assign unique identities for each of the virtual machines and how do we make them part of our organization's network? Part of the answer introduces the concept of a Virtual NIC (vNIC): which is created on a virtual machine to let it connect to the network. The second part of the challenge is the fact that although you have multiple vNICs connected to a virtual machine, there should be a way to channel the vNIC traffic out of an ESXi host via its physical NICs. This challenge is addressed with...