Our operation is located in a dedicated computer room. These premises have access control, fire warning systems, cooling and UPS/generators. Our entire server farm is based on rack-mounted HP Proliant servers. Most of it is redundant on the server-side, i.e., dual power, dual CPUs (or more), dual LAN cards, RAID disk systems, with mirroring as the minimum deployment.
Backup takes place every night, and the connection to the Internet is by redundant fibre optic cable.
We have a surveillance system that monitors the servers, services and software on them, and that automatically alerts us throughout the day by SMS if anything happens.