This article reminds me in particular of my long-open question about how to prepare for solar storms. But now I have a new question. If the way to prepare my electronics for a solar storm is to put them in a cardboard- and aluminium-foil-lined faraday cage -- what happens to all the hard disks in the cloud? Do any cloud providers have offline tape backups in faraday cages?

This isn't just about recovering after how many ever days or weeks without power. It's whether you have any data left _to_ restore. Somebody tell me I don't need to worry.