STOP
HAMR time!
In September 2012, Seagate boss Steve Luczo gave a presentation using a HAMR technology disk drive. Now, more than a year later, a WD exec has done the same with the company's own HAMR tech drive. There's got to be a joke here: WD exec nailed it with HAMR? If all you have is a HAMR every disk is a nail? (Give it up - Ed) HAMR …
My solution, two NASes, primary rsync'ing to the secondary weekly. That way I can handle total NAS death, rather than just relying on RAID1 to save me.
Really important stuff, like photos, are periodically backed up to USB and stored off-site. I'm not as diligent at doing this as I should be - I'd prefer to rsync them to an offsite NAS (other security issues will have to be addressed).
I have about 4tb of assorted files. Games, anime, movies, PDFs. The vast majority of which is entirely replaceable. My backups are a couple of gigabytes worth of hard to replace PDFs and personal files. RPG info, character sheets, etc.
If my HDD dies, it'll take an hour to reinstall Windows, another hour to get the software I use a lot and then I start reinstalling games and downloading anime I'd like to watch (again) over a period of weeks. Most of it just things I've watched and deemed good enough to watch again some time, so I leave it on the drive until I ran out of space and start deleting some of it.