Citrix XenServer
On 22 October 2007, Citrix Systems completed its acquisition of XenSource, and the Xen project moved to http://www.xen.org/.
This move had started some time previously, and made public the existence of the Xen Project Advisory Board (Xen AB), which currently has members from Citrix, IBM, Intel, Hewlett-Packard, Novell, Red Hat, Sun Microsystems and Oracle.
The Xen AB charter assigns it oversight of the project's code-management procedures, and with development of a new trademark policy for the Xen mark, which Citrix intends to freely license to all vendors and projects that implement the Xen hypervisor; the Xen AB will have sole responsibility for the requirements of licensing.
On 21 October 2009, Citrix further announced their, now commercial, applications of XenServer would be fully open-source and made freely available to the public. Simon Crosby, CTO of Virtualization and Management division at Citrix, stated: "XenServer is 100% free, and also shortly fully open sourced. There is no revenue from it at all."
The product lines were renamed in Spring 2010
- XenServer [Free edition]
- XenServer Advanced Edition
- XenServer Enterprise Edition
- XenServer Platinum Edition
What Is XenServer?
Server virtualization is a proven technology that enables multiple virtual machines to run on a single physical server.
Each virtual machine is completely isolated from other virtual machines and is decoupled from the underlying host by a thin layer of software known as a hypervisor. This allows each virtual machine to run different operating systems and applications.
Because the machines have been decoupled from the underlying host, the guest can also be moved from one physical server host to another while running; this is known as live migration. These attributes are transforming how organizations approach virtual computing.
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