An interesting case study in fault tolerance
Two undersea telecommunication cables were cut on Tuesday evening, knocking out Internet access to much of Egypt, disrupting the world’s back office in India and slowing down service for some Verizon customers.
One cable was damaged near Alexandria, Egypt, and the other in the waters off Marseille, France, telecommunications operators said. The two cables, which are separately managed and operated, were damaged within hours of each other. Damage to undersea cables, while rare, can result from movement of geologic faults or possibly from the dragging anchor of a ship.