OK – This looks a little complicated. For people who want to take a look behind the scenes, this is what the topology overview looks like. For people who don’t – here’s the point:
All aircraft, flight and other operational data is backed up as it is generated, in an off-site location. If there should be some kind of disaster at the main location, the data remains safe, and operations can be restored by accessing the backup location over the internet. Flight records are a regulatory requirement so this architecture ensures they remain safely backed up.