Virtualization

Motivation

With virtual machine you can run a virtual computer inside your real computer. Thus you can save resources by avoiding to have many small machines and you can move these virtual machines between physical hardware in order to allow a higher degree of redundancy. There are a few free software/open source options in and around Linux and also some commercial offerings for virtualization. Here is an overview:

Commercial

• VMware
• Microsoft HyperV
• Citrix Xen Server