backup.html can't be found...what is it anyway?

A lot of sites are actually hosted by more than one company. Some big consulting companies sell solutions that are hosted in their hosting environment but maintained by another for company. I am currently on a project in which our company was outsourced to not only deliver the software but to maintain the servers. The big consulting company that has a multimillion dollar monitoring system always let us down. We ended up writing several scripts to monitor our processes and servers( as we could not install any other software for security reasons ) Obviously, We would rather have the montoring software that we use on our internally hosted sites. However, Our scripts do a superb job and haven't let us down. I don't think it is hard to achieve 5 9's if your site is set up properly. All of our down-time on the different environments that we host were actually due to the Large Consuting company doing things like shutting down firewall ports, A security team kicking the wire to a DataBase, turning off the power to the hosting facility ( Yes they have UPS. However, it is configured wrong. So when they have a scheduled power down.... The UPS's do not work. ) Unfortunately , I can't say that this is unique in the Industry. As another Major Hardware/Consulting/software company that we are partnered with are is also just as bad.