Then you seriously need to look at Hyper-V. Even now, if you strip vSphere down to it’s most economic deployment with the Standard edition, you can save quite a bit by going with Windows Server 2008 R2 Hyper-V (with Software Assurance or though a scheme with upgrade rights like OVS) and the System Center Management Suite (for managing the entire application/infrastructure stack AKA cloud). And because Windows Server Hyper-V is not vTaxed cripple-ware, you get access to all of the features.
I mentioned upgrade rights for Windows Server because you will want Windows 8 Server Hyper-V. If Windows Server 2008 R2 Hyper-V has more features than vSphere Standard (which it does), then Windows 8 Server Hyper-V will leave VMware and their overpaying customers in the dust.
If you’re a VMware customer then you need to look now. Get a lab machine or two and try it out – do some prep because they are different products. System Center Virtual Machine Manager will allow you to migrate from vSphere, and you’ll get to focus systems management on what the business cares about: the service.
If you’re a Microsoft partner that’s focused on VMware then go looking for Symon Perriman’s content on Hyper-V training for VMware engineers. Work with you local Microsoft PTA to get trained up. in Ireland, MicroWarehouse customers can work with me – I will be running a number of virtualisation and System Center training classes for partners in MSFT Dublin, and I am available to call out to prepare sales staff and account managers.
Windows Server 2008 R2 Hyper-V made an impact. Windows 8 Server Hyper-V is a game changer. Ignore it at your peril!