Some virtualization vendors have an online ROI/TCO calculator that prospects and customers can use to justify the purchase of their hyperivsors: VMware has one, Parallels has one.
Microsoft, which is preparing to release Hyper-V 1.0, now has one as well: the Microsoft Integrated Virtualization ROI Tool.
Compared with the others above, this calculator requires an impressive profiling of the company's current situation for three different areas: production server, development and test lab, and desktop virtualization.
From that data and for all these scenario, the tool provides a very deep analysis of the TCO, the entity of the investments (up to 3 years) and the ROI.
Another interesting aspect is the comparative calculation between Microsoft products (both Hyper-V and Virtual Server) and competition, with consideration for all the software licensing, the storage space cost, the third party backup software and more.
Microsoft, VMware, Virtualization, Hyper-V, Hypervisior, ROI, TCO, Calculator, Tools