I think in case of such an event, an bank account is lost forever. Beside gold, bitcoin has the best chance to survive, if we are able to restore the database.
What can we do to maximize the chance?
I'm not an expert. But, how can one save his node and miner from a sun storm if the South Atlantic Anomaly get bigger?
A sun storm may cause Electromagnetic induction and may damage IT Hardware right?
Is this a problem, and if so, what you would do about it?
https://en.m.wikipedia.org/wiki/Electromagnetic_induction
Discussion
Probably something like a faraday cage around your hardware?