I got myself 4bay QNAP, and then bought 4bay extension. Little did I know that the extension cant expand current pool, so I cant use 6+2, only (2+2)*2. (bullshit). The CPU is underpowered for basically anything, including its web-server (sometimes it just doesn't respond at all), its constantly throwing "please upgrade firmware" stuff (why cant it update on its own?), its "apps" are a joke, I have a "admin" account I cant disable or rename, I have a "guest" account I cant disable or rename (only set its privileges to 0), there was a time where its VPN login page had exploit where you could get NAS Root access trough that VPN login page without knowing username or password (was similar to sql injection), and overall I regret the decision going qnap to save few bucks ever since.

I have no idea how synology is, but since I got burned so bad my next version will be custom build NAS running something like freenas or similar.