It is good to see that VMware has managed to keep momentum even as Citrix and Microsoft launched their Hypervisors as an onslaught on VMware's Virtualisation market share. Now, even today customers still select VMware Virtual Infrastructure as the best platform to run Microsoft Exchange. I guess this goes to show that although Microsoft and Citrix may be catching up, VMware is still miles ahead in the race and this is why I say so:
I've been playing around with Windows 2008 R2 Beta with Hyper-V for a little while now to try and get a feel for what it does and how it does it. Even though I'm a hardened VMware supporter (this is no secret by now, and I'll stay a hardened VMware supporter for the foreseeable future), I do think Microsoft is making steps in the right direction. I haven't really had enough time to play with Citrix XenServer, so I can't really comment on that. I have no doubt that Hyper-V on Windows 2008 R2 will be a good product. However, even though Microsoft seems to be throwing everything they have at their attempts to get Hyper-V and their entire package on par with VMware, it still just feels like they’re are just about trying to catch up with the functionality of, well, VI3!, a product that is just about to be superseded by the new VMware vSphere. Now I don't have the exact details, but I'm sure vSphere will be released later this year. vSphere will have an enormous amount of new functionality (some of which may still be well kept secrets by VMware). If vSphere is released this year with lots of new bells and whistles, what will Microsoft have to do to get Windows 2008 R2 on par with vSphere? Time will tell I guess.
Anyway, back to Exchange on VMware. I found this article on the topic: