I have just built a new NAS called NASsie using a Raspberry Pi 4CM and an all 3D printed case. I actually built 3: main system, backup system and test system.
There are hardware and software instructions are on Hackster.io
Hardware: https://www.hackster.io/cyberl…d-storage-hardware-38a258
Software: https://www.hackster.io/cyberl…d-storage-software-a4a968
The 3D print case is on Printables.com: https://www.printables.com/mod…-home-network-attached-st
The code for the use interface is on GitHub: https://github.com/CyberLeader3000/NASsie
