On 02/16/2011 11:06 AM, Lightner, Jeff wrote: > Prior to KVM CentOS and RHEL did have XEN so you can do virtualization > without upgrading - just not KVM. (After KVM was introduced it has > both XEN and KVM available.) That's true for RHEL 5, but XEN is no longer supported in RHEL 6. -- All the best, Brian Pitts