Most of the Eufy plug in stuff (not battery/solar) will write to a nas but unless your nas has a built in function to record rtsp streams it may not be that easy (and reliable).
But finding consumer level stuff that easily records to a nas isn't that easy.
If I want a cctv system ASAP what's the easiest and affordable one I can get?
I want to record if anyone comes onto our front drive/garden/door.
I have a home storage thing with lots of tb so would like to send all footage to that.
For now I don't care about other features.