Is There a Quiet NVR Or DVR That Supports 8-16 Channels Of HD Video?

Silent NVR's and DVR's are popular for residential and some small office installations. These users don't want to turn their home or workplace into a noisy equipment room.

There seem to be a number of fanless NVRs and DVRs which support up to 4 channels of HD video.

However when I've tried searching for 8 or 16 channel video recorders, they all seem to be pretty noisy due to...

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