[averynicepen]

Both sides of this have pretty good counterexamples. There's an experimental way to encode data on crystals (using lasers, I recall?) that last a very very long time. The more feasible example though would be archival tapes used in long term cold storage, that also do quite well.

For physical medium, given the right storage conditions, you can store film for quite a while, and that technically has infinite resolution in comparison to a digital copy.