Just recorded two videos to show you what I mean:
- https://youtu.be/yPocaM6f2DU is it starting up with the noise recorded from the front of the rack. Barely noticeable.
- https://youtu.be/YLNxX3m5vYg is the noise at the rear of the rack. There are a few more things with fans in there but I stuck the phone camera near the hot air exhaust fan on the h9000 to give a better idea.
