Licensing

Hi,

My company is about to purchase Ghost Suite, but are unsure of what / how many licenses we need to purchase.  My experience, we had a license for Ghost and that was it, there was no need for an image license or such.  We need to maintain a production image of our basic server to update periodically; do we need a license for each server we need to make an image of or create an image for, or do we only need to purchase the application, and license for it?

Thanks in advance