Don't make a back-up and then store it next to the computer. Avoid locating critical servers and files in locations prone to water damage. For example, a space beneath a mechanical room is more likely to experience water leaks. Keep critical servers off the floor, and inside a properly designed cabinet to minimize the damage in the event of a water leak. Follow the fire prevention code.
Every building is inspected at least once a year.
Carefully review your inspection and make sure problems are corrected. Don't plug too many items into one outlet, and only use Underwriter's Laboratories listed outlet strips that have a circuit breaker. Don't leave computer monitors on overnight. The monitor is the component most likely to overheat and start a fire. Close doors at the end of day to help prevent smoke spread.