Logical and economical storage of image archive

Hmmm, I think I detect an itch that needs scratching

Hey, if you want to try building something based on FreeNAS or whatever, I certainly won't try to talk you out of that as a fun learning experience.

I don't think it's quickest, easiest solution to the immediate problem. But I bet you'll learn a lot.

Just one caution: a NAS isn't that useful if it isn't reasonably robust and reliable. If you're building one with a lot of components that are 5+ years old it might fall short in that regard. Just keep that in mind as you look at the items you're hoping to utilize.