Possible Duplicate:
Can you help me with my software licensing question?
I have a TechNet Subscription and have (1) Windows Server 2008 product key. It says this type is MultipleActivation. My question is... if I installed the key on a VM, and then later wanted to delete the VM, can I reuse the same product key? Will I be penalized for doing such a thing?
Short answer, is yes.
You can install a server with that key, activate it and delete the VM over and over if you wish.
For example, if you were allowed 1 activation of a product key before it expired, and formatted/deleted the machine, you would be able to use and activate again, as its still in the boundaries of the agreement.