They are not in the same network ( 2 different offices - one hosting the product and database and other the customer using the product) and they cannot be linked as well. If I make them both 2008 R2, would the STANDBY option work? Do the servers need to be at the same level when it comes to updates and service packs? My first preference is not to go with just 2008 R2. But if that is not possible at all, then I can go with 2008 R2 on both sides.