Windows Server 2003 R2 and Virtual Server
Common question I've seen raised a few times recently. Can you use Windows Server 2003 R2 either as a guest or a host for Virtual Server 2005 R2? Yes, absolutely. Remember Windows Server 2003 R2 is simply Windows Server 2003 SP1 with additional functionality on top. The underlying kernel is unchanged from SP1 and hence will run absolutely fine both as a guest and host for Virtualisation.