Hi Daniel, I’m grateful to have come across this article and your profile. I’ve been looking to learn more about optical media storage. I’ve started writing about my Personal Digital Asset Management workflow in the context of photography and video. When it comes to risk management, I realized the one part missing despite multiple redundancies was the question of whether/how my system could withstand a black swan event such as a nuclear war or an intense solar storm, since EMP could wipe out not only HDD/SSD but also cloud storage since they rely on the latter. So in addition to time longevity, optical storage be important for this reason as well.