Use a USB HDD on Volumio/Rpi as NAS on networked Volumio/Rpi

Hi I had this idea. Wouldn’t it be great if a USB attached HDD on one Volumio could be seen as a NAS by other Volumio devices on the network??

Eg. I’d have my main Volumio/Rpi and HDD on my main Hifi and stream tracks from it to other rooms.

If this is already possible - please ignore my ignorance.