The single points of failure?
To add to speculation about possible causes...
1) Not paying the datacentre bills... hard to think BA might not cough up to a red letter before the switch is pulled.
2) Shared storage failure/corruption... something like a catastrophic SAN failure would potentially take out dozens of systems in an instant, and require a massive co-ordinated recovery effort
3) Networking... corruption of core router configuration making everything everywhere inaccessible?
But power? C'mon. That's just nonsense.
Biting the hand that feeds IT
