5D Optical Disc Could Store 500TB for Billions of Years - ExtremeTech
Hard drives and flash storage have gotten more reliable over the years, but only on a human timescale. What if we need data storage that lasts longer? Decades? Millennia? The key to that might be 5D optical storage, which has a data density 10,000 times that of a Blu-ray disc.
https://www.extremetech.com/extreme/328700-5d-optical-disc-could-store-500tb-for-billions-of-years