I use a rpi4 running raspbian and resillio sync (https://www.resilio.com/ https://www.resilio.com/) for my internal photo backups and data syncing. It also shar

I use a rpi4 running raspbian and resillio sync (https://www.resilio.com/ https://www.resilio.com/) for my internal photo backups and data syncing. It also shares outside my local network well but the users need the software installed.