Scope/Description

According to the Canada Safety Council a typical office with computers ranges from 40 to 60db. https://canadasafetycouncil.org/workplace-safety/office-noise-and-acoustics
A study published by Tad Davies, executive vice president of The Bick Group Inc said server room noise would range from 70-79db.

The following measurements were completed with no HDD’s in the system. Depending on the HDD used noise levels will vary.
Especially during initial spin up.

Our Recorded Results

 * 45Drives Lab with Multiple Machines Running: 65-70dB
 * 45Drives Offices on a Friday afternoon: 50-55dB
 * Meeting Room with no machines running: 50dB

4 Drive Machine 1 foot away

 * Redundant PSU
 * Ambient Noise = 55dB
 * 56-60dB
 * delta: 1-5 dB

8 Drive Machine 1 foot away

 * Redundant PSU
 * Ambient Noise = 55dB
 * 56-60dB
 * delta: 1-5 dB

15 Drive Machine 1 foot away

 * Non Redundant PSU
 * Ambient Noise = 55dB
 * 56-57dB
 * delta: 1-2 dB

30 Drive Machine 1 foot away

 * Non Redundant PSU
 * Ambient Noise = 50dB
 * 55-60db
 * delta: 5-10db

45 Drive Machine 1 foot away

 * Redundant PSU
 * Ambient Noise = 50dB
 * 65-70db
 * delta: 20-25db