The bits of the piece that stood out for me were:
Drives written to once and stored away have the highest risk of data corruption due to not being read/written to on a regular basis. Rotate older working HD into low-risk use.
I do that.
Do not use included HD "software" that came on your new external HD. All such free software is useless, and often causes issues. Unless you have a RAID array that necessitates using software for the external system, always format your new HD from the box and erase its contents.
My Time Machine backup is not big enough, therefore…?
As data becomes larger and larger each year, and now a terabyte is generally considered ‘not that much space’ a single HD backup of your system OS and large files is not feasible for a time machine backup. Keep your computer ‘clean’, meaning keep all your applications and important use files on your Mac, but large video, picture, and data collections off your Mac that you aren’t using on a regular basis.
All hard drives will die in roughly 3-8 years, even under ideal storage conditions.
They also name DVDs as ideal archive for data (keeps for 50 years??). I thought they were one of the quickest things to fail. The article's about 2 years old but I thought DVDs were considered an antique storage system even then. I have a lot of Verbatim DVDs and about 10% don't play when I try, & they're only about 5-10 years old.
Edit: Moved topic from Mac OS to the more appropriate forum. ~ Animal