Citrix XenServer Virtualization Platform Now Free
Pedro writes "Citrix announced today that they are giving away their Xen OSS based virtualization platform XenServer with all the goodies included for free. The big highlights are XenMotion, which lets you move VMs from box to box without downtime, and multi server management. The same stuff in VMware land is $5k. They plan to sell new products for XenServer and also the same stuff on Microsoft's virtualization technology called Hyper-V. It will be interesting to see what VMware does. The announcement comes the day before VMware's big user event VMworld."
You're describing the practice of using virtualization to host multiple dedicated-purpose "appliances." I use this approach myself; I've got a Debian VPS doing proxy work, another couple of nodes for static HTML serving, another for dynamic apps, one that just serves as an XHTML validation server, etc.
Hardware is cheap these days, and virtualization makes the clean separation of appliances on a single managed box very easy to accomplish. The benefits I get include improved security (difference services run on partitioned hosts) and ease of management (upgrading one application doesn't break others).
512 MB RAM, 20 GB disk, 200 GB transfer, five datacenters. $19.95/month.