I ended up buying a 4 disk synology NAS unit/appliance for about $400 a couple of years ago. It's been remarkably reliable, and has a built-in feature to backup

I ended up buying a 4 disk synology NAS unit/appliance for about $400 a couple of years ago. It's been remarkably reliable, and has a built-in feature to backup to Glacier, although there's third party tools for most any online data backup system you can think of. Prior to that I had this monsterous, 4U server that I had to maintain, update, debug, not to mention build and move from house to house, for 8 years. At the time it seemed like a good move, but over time, as my time got shorter to work on personal products, I started to look for other ways to solve the storage problem. I much prefer the Synology NAS to the 4U custom built system. It's about as close to a toaster-style appliance as I can think of. If it died tomorrow, I'd buy another one (then restore from my Glacier backups).