· First, check with your vendor about licensing. You may have to buy two copies of the application even though the second copy will not be running.

· Also, check on software maintenance pricing, which is frequently based on total net license revenue--doubling your maintenance costs.

· Finally, consider the cost of hardware maintenance for each server, as well as the labor costs associated with supporting each NT server (for example, installing Service Packs or upgrades to your applications). These costs often start at several thousand dollars a year and can rise considerably to cover custom 24x7 service agreements.