5.25" floppies were obsolete for years before they even installed the system in 1998. They could have been using compact flash cards by then.

They’d be better off not relying on the cloud.

All the deserved ribbing aside, if you had to design a removable, R/W, high-capacity, environmentally tolerant, secure, fault-tolerant, mission critical storage system that could last 25 years, starting NOW…

What would you pick?

That’s a tough one, even if you design future hardware upgrades into the system.