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And VMware predates all of them (1998). But it does not matter. What matters is how useful it is. I use Virtualbox and KVM at home because both work well with Linux. I use VirtualBox at work because that is the only one we are permitted to have on our workstation. Shirley's point, "It's good to have a choice" is very appopriate. The biggest advantage of VirtualBox is that it is very cross platform, in that it can run on Macs, Linux, Windows and commercial Unix. On 06/05/2013 01:00 PM, Shirley M?rquez D?lcey wrote: > You're right, it's not dead after all. Google, Amazon, and other big users > picked up the development slack, and Citrix (which bought Xensource, the > original backer of Xen) opened up the project to make it possible. The > slideshow on xenproject.org ( > http://www.xenproject.org/component/allvideoshare/video/latest/how-to-almost-kill-a-successful-project-and-then-bring-it-back-to-life-lessons-learned-from-the-xen-project.html) > tells a bit of the story. > > A bare metal hypervisor like Xen makes sense in some use cases, and a > userspace-oriented one like KVM makes sense in others. It's good to have a > choice. > > > On Wed, Jun 5, 2013 at 12:13 PM, Richard Pieri <richard.pieri at gmail.com>wrote: > >> Matthew Gillen wrote: >>> The history is a little more convoluted. Redhat got on board with Xen >>> because at the time it was the more advanced solution. With RH's >> Minor nit: at the time it was the ONLY solution. Xen predates KVM by >> almost 10 years. >> >> >>> Linus much preferred the QEMU/KVM approach, and basically said he'd >>> never bring Xen into the mainline. Since RH has a policy (a wise one >> I don't. KVM isn't a bare metal hypervisor like Xen. Every KVM guest is >> a process running on the Linux host. That's fine as a substitute for >> VMware Workstation but it's not so good for enterprise class virtual >> server racks. It's also not so good for workstation virtualization since >> you can only run KVM guests on Linux hosts thus negating the easy >> portability that makes workstation virtualization so useful. >> >> >>> So basically at this point everyone has thrown their lot in with >>> QEMU/KVM and Xen is pretty much abandoned except for some researchers. >> Xen abandoned? Only used by researchers? Perhaps you've never heard of >> Amazon EC2 or Rackspace or Linode. They're only some of the largest VPS >> platforms in the world and they all run on Xen. > -- Jerry Feldman <gaf at blu.org> Boston Linux and Unix PGP key id:3BC1EB90 PGP Key fingerprint: 49E2 C52A FC5A A31F 8D66 C0AF 7CEA 30FC 3BC1 EB90
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