Microsoft and Novell have announced the availability of a joint virtualisation solution optimised for customers running mixed-source environments. The joint offering includes SUSE Linux Enterprise Server, configured and tested as an optimised guest OS running on Windows Server 2008 Hyper, and is fully supported by both companies' channel partners, including Dell. The offering claims to provide customers with the first complete, fully supported and optimised virtualisation solution on both Windows and Linux environments. The virtualisation solution is the first to include technology developed by both companies at their joint Interoperability Lab, including virtual machine adapters built to optimise SUSE Linux Enterprise Server as an optimised (or as it is oftenreferred to as 'enlightened') guest operating system on Windows Server 2008 Hyper, providing optimised performance to SUSE Linux guests.