High performance XEN setup on CentOS 5.4 (amd64)
The Xen® hypervisor, the powerful open source industry standard for virtualization, offers a powerful, efficient, and secure feature set for virtualization of x86, x86_64 and other CPU architectures.
With Xen virtualization, a small software known as the Xen hypervisor is inserted between the server's hardware and the operating system. This provides an abstraction layer that allows each physical server to run one or more "virtual servers", effectively decoupling the operating system and its applications from the underlying physical server. It needs extremely low overhead and provides near-native performance for guests OS's (virtual servers). Xen is licensed under the GNU General Public License (GPL2) and is available at no charge in both source and object format. Xen is, and always will be, open sourced, uniting the industry and the Xen ecosystem to speed the adoption of virtualization in the enterprise.
I will be using CentOS 5.4 (x86_64) for both the host OS (dom0) and the guest OS (domU's) and LVM based block devices for guest OS's.