While this type of configuration is possible (VM Images are possible as well), Cisco does not currently support CCMs on VM images or on Blade servers.
They have a set of supported servers for CCM and Unity (some Cisco OEM, some Third party HP and/or IBM) and from a support perspective, they do not support any other format (they have had problems with other servers down to the bios level, thus the strict adherence to support hardware platforms, thus reducing the amount of support calls for hardware issues out of the realm of cisco support personnel).
Will this change in the future, almost definitely. When and what time frame, well, I dropped my crystal ball and I can no longer see...
HTH,
LE