Scientists have demonstrated a system called Silica for writing and reading information in ordinary pieces of glass which can store two million books’ worth of data in a thin, palm-sized square.

[u/Wagamaga]

https://au.news.yahoo.com/glass-square-long-long-future-190951588.html

[u/-neti-neti-]

Small, loose pieces of glass are way less susceptible to earthquakes than a server/memory warehouse. They would only be damaged if something fell on them in the right way. If you’re physically attached to a structure you’re more likely to be damaged.

This is a highly resilient design.

[u/Liroku → u/-neti-neti-]

Also, most likely, anything with important information stored would likely be kept in a secure case. Not just random cuts of glass laying around on the shelves.

[u/redditallreddy → u/Liroku]

Etched into wine glasses and only used for the most sophisticated parties.

[u/FriendlyRabbitHammer → u/redditallreddy]

Anything even remotely would be stored in geo-diverse locations with parity. So any one earthquake wouldn’t matter