I know many use separate hard drives for storage. I have a few and use them and will end up with more as I go on.
Are Blu-Ray discs still viable as another media for image archiving? A physical/tangible disc stored in a good fireproof/waterproof safe so there is an alternative that won't be hit by an EMP or a major solar storm that wipes much of the electrical storage.
I know finding a new reader after an event might not be easy but could keep a portable one with drivers on the physical disc with the rest so I could use it once computers were up and running again.
Viable, or not these days?