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.
So starting off, HDD lifetime is really difficult to gauge, but this drive is already ~2000 hours past the average expected life for an HDD.
I would expect it to fail sometime within the next 12 months.
Don't store anything on there that you aren't willing to lose.
You're on the flatline of the bathtub cover between most likely failure early on or late in life. How long is that line? 1 second, 1 year, 10 years? Unknown.
Mantras:
Any storage device/media can fail at any time, for any reason, with or without notice.
BACKUP, BACKUP, BACKUP! Ideally at least two, with one set offsite physical or cloud.