Xen is a hypervisor based virtualization technology originating at the University of Cambridge, nowadays developed largely by the company [[http://www.xensource.com/|XenSource]].  Xen introduced the concept of paravirtualization, which allows for extremely high performance virtualization provided that the guest virtual machine runs a modified operating system kernel.

Xen also supports full virtualization (running unmodified operating systems) on processors with Intel VT or AMD-V technology.

Xen is available in many Linux distributions, however [[lhype]] and [[KVM]] appear to be making more progress at getting merged into the upstream kernel...

Articles:
 * How to use [[XenWifiNetwork|Xen with a mobile network]], for example on a laptop.
 * [[https://virt.108.redhat.com/articles/2007/01/15/xen-guest-installation.pdf|Lab 1: Xen Guest Installation (PDF)]] - Learn how to install RHEL3, RHEL4 and RHEL5 beta 2 and WinXP on Xen
 * [[https://virt.108.redhat.com/articles/2007/01/15/xen-live-migration.pdf|Lab 2: Live Migration (PDF)]] - Want to move an executing workload from one node to another? Here's how. 
 * [[https://virt.108.redhat.com/docs/ETXenVirtQuickRef.pdf|Xen virtualization commands, at a glance. (PDF)]]

Links:
 * [[http://www.xensource.com/|XenSource]]
 * [[http://jailtime.org/|Jailtime]] a site with many different Xen guest images.
 * [[http://vmblog.com/archive/2007/01/27/xen-remote-management-interfaces.aspx|Xen Remote Management Interfaces]] as summarized from a recent xen-devel post.
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CategoryXen