Very good article for a basic intro to DR and some of the pitfalls that you could encounter. You're describing a higher level of DR than we're employing at this time, though we're working towards a higher level. Unfortunately right now all we have is our backups going to a building a mile away. If we lost the server room to a fire or whatever, we wouldn't have much data loss, though there'd be a LOT of purchase orders issued the next day for new hardware!

Fortunately our ERP system SFTP's itself to the vendor on the east coast every night, so that system can still be productive if a disaster happens. They were able to cut paychecks for a city hall that was wiped off the map by Katrina and couriered them to the nearest city with an open bank. It may not be perfect DR, but it's good enough.