I have an old Synology, so it miht be different. I run relatively few stuff on it too, with no client that consistently access the shares though samba/nfs (I c

I have an old Synology, so it miht be different. I run relatively few stuff on it too, with no client that consistently access the shares though samba/nfs (I cluster the scripts that run automaticaly around the same range of time, and they unmount after they’re done). I wonder if your system is not writing logs from a monitoring service (something checking your dynamic DNS, or waiting for remote connections, or pinging the internal servers to see if they’re alive). I stopped most default services, including sync (it’s done more rarely via a user script instead), and yes, it can be a PITA to understand what’s running out of the box.