[jmillikin]

Tsunamis are not giant walls of water like what you see in disaster movies. They're more like an unending tide: the water just keeps rising until it floods the area. Anything floating loose on the water at the time is at risk of being carried inland, but is unlikely to be completely destroyed.

A floating data center barge anchored a mile offshore is as close as you can get to tsunami-proof. At worst, its connection to the mainland would be severed if the tsunami destroyed the local land-based telecom infrastructure. Any data located on the barge would still be intact until communications could be restored.

[14113]

Hence why they're also sometimes called "Tidal waves"