Data as old as the universe

Optical data storage has virtually unlimited lifetime

I don't know why, but I always find stories about developments in technology for long term data storage interesting. Perhaps it's because I feel there is science fiction potential there: if you came across alien data storage, it would be good to be able to recognize it.

So, from the link, you can read about an optical system that writes on quartz and should last a very, very long time:

The researchers calculated that the decay time of the nanogratings, and thus the lifetime of the data storage system, is about 3 x 1020 years at room temperature, indicating unprecedented high stability. The lifetime decreases at elevated temperatures, but even at temperatures of 462 K (189° C, 372° F), the extrapolated decay time is 13.8 billion years, comparable to the age of the Universe.

Wow.