I recently got into self-hosting Seafile and successfully set it up on my dedicated server. Had to think backup and security strategies quite a bit and ultimately I set up a bulletproof backup mechanism. Tested it pretty rigorously.

Seafile took me by surprise in terms of how quick it was at picking up new files and changes - syncing works incredibly well too. I moved all my files from my Google Drive into my Seafile instance and I'm now using it on all my devices as my main cloud storage solution.