Kurt Shintaku's Blog

.VMC files are Virtual Machine Configuration files that contain the various parameters of the synthetic hardware environment such as the memory size available to the VM, the number of network adapters, etc. etc.

Matthijs ten Seldam, a member of the Virtualization team at Microsoft, has produced a Powertoy tool for migrating these .VMC configurations to Hyper-V installations.

VMC to Hyper-V Import Tool, VMC2HV for short, imports the configuration from a Virtual Machine Configuration (VMC) file. Both Virtual PC and Virtual Server use VMC files to store the hardware and other properties of a VM. It reads the VMC file and maps all relevant properties to those for a Hyper-V VM. For those properties that did not exist, it provides additional options. Those properties that no longer exist are ignored.

VMC2HV was developed to ease the transition from Virtual Server to Hyper-V. As I explained in an earlier post, I was quite annoyed by the fact that I had to enter all hardware properties manually if I wanted to use the VHD files from the Virtual Server VM with the hardware settings as they were in the original VM. It really took a lot of time to get my VS VM’s under Hyper-V. So I did not want to do that again and decided to develop a tool that would import the properties for me (development of the tool took quite more time but it was fun…).

http://blogs.technet.com/matthts/archive/2008/09/12/vmc-to-hyper-v-import-tool-available.aspx