So I'm looking at archival storage options. I don't mean years. I mean decades. Many decades. CD media is good for 10 years, under good storage conditions. SSDs tend to start degrading on that same timescale. Data on regular hard drives may last longer, but then you've got to worry about the lifetime of motors and bearings. Lubrication. Ideas? M-disks are a possibility, though they've gotten pricey. Also, one can complain that optical media in general will be obsolete in a few decades, but there will ALWAYS be archival readers around somewhere. I can find someone to read a floppy disk right now. Suggestions?