so, I would suggest talking with an archivist. Many libraries will have archivists on the payroll (Or know one, anyways) and they’d likely be happy to talk about archival methods.

personally, what I would do- and I make no guarantees that it will work for a decade- is to seal the hard drive (or whatever media,) inside a vacuum bag with a shitload of silica desiccant gel. maybe double bag it with even more silica gel, then place it inside a pelican case. if you double bag, splurge on the indicator stuff and let it sit for a week.

but I’m not an archivist, and they may laugh at my suggestion.