Ask HN: where do you backup a ton of photos?

For years I've been dealing with the issue of wanting to backup large quantities of photos somewhere safe. I have several terabytes of them, either shot by me or passed down to me by my dad and friends.

I've been migrating from hard drive to hard drive for a long time, occasional drive failures here and there, and it's been pretty much a waste of time. I'd much rather put it up somewhere that scales infinitely, is properly redundant, and still gives me the ability to browse through the photos if I'm looking for something specific.

Dropbox is too expensive for the size I'm talking about. Google Photos tries too hard to push the G+ thing on me, which I don't care about, and Flickr offers no API to work with large sets of assets as far as I can tell.

There's Amazon's S3 and Glacier, which seem pretty reasonable for the price, and do have plenty of APIs, but as far as I can tell they don't really offer a way to nicely browse the images. Perhaps someone built a UI wrapper on top of that, wouldn't surprise me.

I can always setup a home NAS, maybe get 8TB in Raid 10, but I'm still concerned that these disks will eventually die and I'll still risk losing everything. Maybe I'm paranoid.

What are my other options? Am I missing something here? There's no way professional photographers don't deal with this issue every single day, so it must have been solved already.