Announced this week at Parallels Summit 2010, Parallels is now going to offer a baremetal hypervisor for Mac X Servers. You no longer have to run Max OS X Server with a virtualization server on top of it, which can bring better performance to the running virtual machines.
Some of the features include the ability to move virtual machines between servers, templates, and snapshots. In addition, they support upto 12 virtual CPUs, 64GB virtual RAM, 16 virtual NICs and 2TB virtual hard drives for each of your virtual machines
Learn more at http://www.parallels.com/products/server/mac/baremetal/
Download it and try it out!