if you have samba4 and samba configs, remove the “samba” config and keep “samba4”. As for samba-vs-nas, here are some notes (it was written for samba3 , but most of the stuff is applicable for samba4 as well).
[cz] Maxovy poznamky k smb.conf
[eng] Maxmilian's notes on smb.conf
2 Likes