To ensure that information stored on the servers is not lost, a backup system is necessary. This system should be located off-site. The location should be in a secure location where unauthorized personnel cannot access the servers or the data. The building should be above the flood plain and be made of reinforced materials that resist severe storms (wind, rain, lightning, earthquake, etc.). The electrical system should have overload protectors installed to prevent lightning from frying the servers if the power lines are struck. The servers should have sufficient battery backup power to keep the system running in case of a total power failure. There should also be a backup generator to supply electricity if the power is off for a period exceeding the length of time the batteries can keep the system up and running.
If a backup system is established off-site, even if the worst case scenario (the entire main building is lost), the data in the system can be kept and protected. If the worst case scenario does take place, only the backup system will contain the data that is stored. In this case, as soon as possible, an additional backup should be established just in case the backup (which is now the only place the data is stored) is subsequently lost.