archival strength USB NVME drive,

Does such a thing exist? Ordinary flash storage is pretty bad at keeping its content when powered off for a long time, due to how flash memory works. I’d be curious about such drives.

Thanks, I think the risk here is that there may not be hardware to read it.

M-Disc DVDs are readable by ordinary DVD drives. So you could simply put a USB DVD drive alongside those backup M-Discs on the shelf.