I wrote an article a couple of years ago on how to use a Pi as a NAS (and googling will find many more examples)
https://www.mikronauts.com/raspberry-pi ... ent-howto/
While a bit dated, it should point you in the right direction
mhristau wrote: ↑
Wed Feb 27, 2019 9:22 pm
Wanting to set up a SSD equipped Pi 3B+ that I can use to wirelessly store and retrieve files between several Windows and Mac. Instead of using a thumb drive, I've been using Dropbox to do this. Don't need or want internet access to this storage. Probably easy as Pi but need someone to point me in the right direction... What is such a system called?
http://Mikronauts.com - home of EZasPi, RoboPi, Pi Rtc Dio and Pi Jumper @Mikronauts on Twitter
Advanced Robotics, I/O expansion and prototyping boards for the Raspberry Pi