Ideas International released an interactive evaluation

The IT research firm Ideas International released  a new evaluation that compares the technical capabilities of four x86 virtual machine platforms (VMware Infrastructure 3, Microsoft Virtual Server 2005 R2 SP1, Xen with Red Hat Enterprise Linux 5, and Xen with SUSE Linux Enterprise Server 10 SP1). The evaluation compares the quality of  40 different functional details in these systems, organized across five categories: performance & scalability; availability; storage Integration; manageability, and deployment considerations. The results of this evaluation are public, and they can be browsed online using a web-based collaborative mechanism. This interface allows visitors to weight the importance of functions covered in the evaluation to arrive at a customized comparison of these VM platforms reflecting their needs. It is also possible for users to contribute their own ratings of individual functions, should they choose to agree or disagree with our "expert" analysis.