I have a PC in a spot of my house I can’t get a cable to. But that’s the PC I do my Blu Ray ripping and encoding on, so I keep a 5tb external drive for moving the files to my NAS afterwards. Sometimes it would take days over WiFi instead of minutes to hours over USB 3 twice. (and piss off my wife for saturating the wifi, heh)
Hard drives are fine. But replacing them every few years for fear of failure is a waste of money. Drives can last over 10 years, or 1 day. Just have more than one copy and you’ll be fine when one does fail.
/audio
It contains all my music and audio dramas (star wars, hhgttg, big finish stuff, graphic audio stuff).
My music, photos, and documents are backed up remotely (Dropbox).
Everything else is just backed up to another machine.
For me it’s cost. 80tb wouldn’t be cheap enough for me.
Most things stay up 24/7
I have a couple machines I don’t currently use for anything so they’re powered off until needed.
If it’s that important, I’d have multiple copies on multiple media, in multiple geographic locations. Like two hard drives and a flash drive, as well as the tape. And in multiple formats. Like raw, and rar’d.
My point is, anything important, you shouldn’t have only one copy of it. The more important it is, the more copies in separate locations you should have.
I still buy music CDs whenever possible.
And LEGO sets. I love getting unique minifigs and animals.
I sold all my comics years ago to make rent, so aside from a few graphic novels here and there I don’t buy comics any anymore.
If you don’t need the space, don’t waste your money. Those drives could last you some time longer easily.
My experience with powerline is pretty terrible. And there is no better place for it sadly.