http://blogs.technet.com/virtualworld/archive/2007/08/07/virtual-server-r2-sp1-can-run-up-to-512-virtual-machines.aspxJeff updated the Virtualization blog with a bit of a comparison from the various Virtual Server releases and there scalability...... ---------------- Virtualization Nation, In one of my earlier posts, I mentioned the fact that Virtual Server 2005 R2 SP1en-USCommunityServer 2.1 SP1 (Build: 61025.2)