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: 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. Xen was originally developed in 2003 at the Univers...