... and here what Google "says" about openQRM Enterprise.
btw: the "here" link above points to the google-translate engine which then outputs in tss meaning "speak". By clicking on the link Google speaks the sentence given as the parameter. As reported this is not supported by all browser. ;) works fine here on Linux/Firefox.
.. sitting on our balcony with my wife having some drinks in the night. Both checking emails and stuff with our notebooks : she: we are kind little crazy browsing emails/web at 2:30 a.m. in holiday ... me: yes, right, but my notebook-batteries will last longer ... she: ok, but I am connected to the power-suppy :P
I would like to suggest to try out openQRM. That way you can perfectly separate "hardware" (virtual or phyiscal) from "software" (your server-images). With openQRM you are completely independent from any virtual disk-image format. Server-images in openQRM are "just" root-filesystems and you can deploy them to virtual machines of any type and also transparently migrate them to other virtualization technologies and even to physical machines at any time without touching or changing your server-image in any way. .. just my 2 cents, i can perfectly live without OVF