Have We Finally Achieved Information Immortality?
"The way information is stored and shared may now be forever changed thanks to a recent major five-dimensional (5D) digital data recording and retrieval announcement. Scientists from the University of Southampton’s Optoelectronics Research Centre (ORC) have successfully demonstrated the longest-lasting and most versatile data storage method to date."
http://singularityhub.com/2016/02/25/have-we-finally-achieved-information-immortality/
You can save the whole social network feeds as well, in the future this will be only a few hundreds of yottabytes that you carry in your pocket and of course all the human knowlege can and will be saved too.
The problem with this as a solution to the digital dark age is it solves only the fragility of the medium. There are two other major causes of the inevitable digital dark age remaining:
1. The data is stored in a format which is incredibly complex. It would be very difficult for someone not already having the knowledge necessary to read the data to figure out how to read it on their own.
2. It's not obvious that there's data there in the first place.
The only way any information is going to survive the digital dark age is if it's printed on paper, or better yet, carved in stone, in plain text or picture format. All other information is going to be lost eventually. Not in this civilization, and possibly (with some luck) not in the next civilization either. But somewhere down the line, all digitally stored information of this century is either going to look like a strange decoration or a bunch of unintelligible gibberish.
You carve in stone how to read the discs (with a microscope) and where to find them... starting with the discs that help to read other formats (e.g., the reference document for the assembler that will allow to then interpret programs in other discs, including programs that are players for multimedia documents in other discs).
Bring back the cuneiform clay cd's.