We are thinking about purchasing a Dell Powervault MD3000i as a SAN solution. The price is affordable unless we have to purchase the hard drives through Dell (their hard drives at more than 3X the cost of third party sources. In the manual it says "Only Dell-provided physical dists are supported. Physical disks not purchased from Dell will be marked as uncertified and will not be usable". Has anyone used physical disks not purchased through Dell on their Powervault MD3000i? If so, what drive did you use?