I have been using a Raspberry Pi 4 (8 GB RAM) as my NAS for nearly 5 years. It is incredibly reliable. I run the following software on it: Ubuntu 64-bit, Samba,

I have been using a Raspberry Pi 4 (8 GB RAM) as my NAS for nearly 5 years. It is incredibly reliable. I run the following software on it: Ubuntu 64-bit, Samba, Jenkins, Postgres and MariaDB. I have attached external hard drives through a USB hub (because Pi does not necessarily have enough power for the external hard drive). I git push to public Samba folders on the Pi, and trigger Jenkins, which builds and installs my server using docker in the Pi.