Book Image

Xen Virtualization

By : Prabhakar Chaganti
Book Image

Xen Virtualization

By: Prabhakar Chaganti

Overview of this book

<p><br />Xen is an open-source paravirtualization technology that provides a platform for running multiple operating systems on one physical hardware resource, while providing close to native performance. Xen supports several operating systems&acirc;&euro;&rdquo;Linux, FreeBSD, Windows, and NetBSD. It enables you to easily test, deploy and run your software and services on multiple operating systems with resource isolation and great performance. It is also a terrific way to consolidate your servers, save hardware and maintenance costs, and minimize downtime. Xen is one of the most popular open source projects in the world and vendors like IBM, Sun, HP, RedHat and Novell are working on integrating Xen into their Linux servers.<br /><br />Xen was originally developed in 2003 at the <a href="http://www.cl.cam.ac.uk/research/srg/netos/xen/">University of Cambridge Computer Laboratory</a> and we now have both commercial and free versions of the Xen hypervisor. The commercial versions are built on top of the open-source version with additional enterprise features. In this book we explore and use the open-source version of Xen.<br /><br />This concise handbook is ideal for professionals who want a user-friendly reference beside them while they get working with Xen and virtualization. Its easy-to-navigate content offers bite-sized walkthroughs for a wide variety of common virtualization tasks using Xen. We use Fedora Core as the host operating system in this book. The book shows you how to add Xen support to it, leads you through the creation of guest domains running different operating systems and follows up by dissecting a range of common virtualization tasks.</p> <p>&nbsp;</p> <p>&nbsp;</p>
Table of Contents (14 chapters)

NFS


Network File System (NFS) is a client/server system that enables users to access files across a network and treat them as though they are in a local file directory. An NFS server provides remote clients with access to its files by exporting the files that are mounted by the remote client and made available to the operating system and the user.

NFS is a great way to allow a system to share directories and files with other systems over a network. It enables users to access files on remote systems almost as though they were local files. Some of the advantages of NFS are as follows:

  • Disk space usage on local machines is reduced considerably by storing most of the commonly used and accessed data on a single machine accessible to others over the network.

  • Home directories for individual users on a system could be set up and stored on a remote NFS server and made available throughout the network.

  • Storage devices can be set up on a remote NFS server. Furthermore, access provided to the devices...