WD Red or Seagate Exos or any NAS drive, as long as it's helium filled and CMS, which is usually 10TB or larger.
Data Hoarder
We are digital librarians. Among us are represented the various reasons to keep data -- legal requirements, competitive requirements, uncertainty of permanence of cloud services, distaste for transmitting your data externally (e.g. government or corporate espionage), cultural and familial archivists, internet collapse preppers, and people who do it themselves so they're sure it's done right. Everyone has their reasons for curating the data they have decided to keep (either forever or For A Damn Long Time (tm) ). Along the way we have sought out like-minded individuals to exchange strategies, war stories, and cautionary tales of failures.
At this point I'd probably just go to https://www.reddit.com/r/buildapcsales/comments/17xmwu7/hdd_best_buy_wd_easystore_18tb_external_usb_30/ .
Otherwise, refurbished Exos 16/18TB if you are not a fan of shucking or WD.
A 10tb+ shucked ( buy an usb enclosure and break it open) drive is a good low coat approach with some risk
- wd only makes nas or enterprise drives of that size so you are very likely to get a high quality drive inside a large WD usb enclosure. wd doesn't make special drives for these enclosures they use what they have lying around
So they are often great value for money with some caveats
- while all the 14tb elements I shucked where Hitachi enterprise drives ( most reliable ones wd has ) they reduced speed from 7200 to 5400 rpm
- they often use a newer sata standard connector that may not work with older motherboards apparently in that case you can tape of one of the pins
- depending on your country you lose warranty. Although in the US you seem to keep it