Artists: How and where do you keep your own archive?

I‘ve amassed a bunch of work over the years and want to file all my images into a proper system —instead of random hard drives or rely on a gallery. I attempted this once and started an archive with an online cloud-based system but that website folded after a few years and now I am left to rebuild my own archive again. I am looking for a digital system/program/website or something that doesn’t cost an arm and a leg, is easy to use, and is available long term.

What sort of archive do you have in place?