It's a mini PC when HDD drive bays. I bought the bare bones version and fitted the RAM and drives. I'll install openmediavault on it but I probably won't get around to it today.
Set up a mini PC with one some months ago as a home media box (with Kodi on Lubuntu) in my living room, which also works as a NAS and Torrent client over always on VPN.
CPU usage tends to be below 10% and you almost never hear the fan on the box turn on.
All this on a machine with a TDP of 15W.
I'd say the N100 is massivelly overpowered to be used just as a NAS.
Well, you definitelly have "room for growth" with it, especially if you don't care about the fan running (i.e. sustained loads above 20% or so) which in my case and since the thing is in my living room I would rather not have (especially since Mini-Pcs tend to have smaller fans which have to rotate faster hence are more noisy).