Method and system for testing interference of fan noise in hard disk and related components

Abstract

The invention discloses a method and system for testing interference of fan noise in a hard disk and related components. The method comprises the steps: obtaining and analyzing a noise frequency spectrum of a fan module, and determining a test frequency spectrum according to the noise frequency spectrum; installing a sound module with the same size as the fan module at the position of the fan module; controlling the sound module to output a sound signal corresponding to the test spectrum; and when the sound module outputs the sound signal, testing the read-write performance of the hard disk. The sound signal to be output by the sound module is determined according to the noise spectrum of the original fan module, and the size and the position of the sound module are the same as those of the fan module, so that a noise environment in which airflow and vibration interference do not exist and the propagation path is consistent with that during working is provided for the performance test of the hard disk; it is guaranteed that the read-write performance test result of the hard disk is more accurate, and a higher reference value is provided for subsequent server hardware and software optimization.

Description

technical field [0001] The invention relates to the field of servers, in particular to a method, system and related components for testing the interference of fan noise on hard disks. Background technique [0002] At present, as the performance of system components in servers continues to improve, the heat dissipation has also increased significantly. To maintain the normal operation of components and systems, greater air volume is required. Therefore, on the road of server system technology iteration, the fan speed of each generation is increasing. The noise and vibration of high-speed fans are more obvious, and the side effects on the server are more serious. In mainstream servers, due to the requirement of compact layout, the distance between the fan and the hard disk area is very close, generally only 4-6cm. The total sound pressure level caused by the noise of the fan reaching the surface of the hard disk is as high as 120dB. It causes vibration of precision component...

AI Technical Summary

Problems solved by technology

The noise and vibration of high-speed fans are more obvious, and the side effects on the server are more serious

In mainstream servers, due to the requirement of compact layout, the distance between the fan and the hard disk area is very close, generally only 4-6cm. The total sound pressure level caused by the noise of the fan reaching the surface of the hard disk is as high as 120dB. Cause vibration of precision components such as magnetic heads and discs, and interfere with the normal reading and writing of hard disks

This type of noise is characterized by complex frequency components and many high-frequency components, and there will be broadband random noise in the high-frequency band, which has exceeded the correction ability of the active servo system of traditional hard disks

[0003] In the published papers, a method for detecting the read and write performance of the hard disk under acoustic noise is introduced, but the acoustic noise is specifically the free sound field of 1 / 3 octave filtered white noise played by the audio sweep, which is This detection method cannot obtain the accurate working effect of the hard disk in the server chassis

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