[dnanian]

Well, again, the scrubbing does refresh the data (as, obviously, does the yearly rewriting). So, if you consider your NAS-based backups "archival" and have them scrubbed, they seem reasonably safe to me.

As far as there being a good chance that after a decade none will work - I've been surprised that most drives *do* work just fine after a decade, retaining all their data. Which, of course, is no guarantee.