Server fan redundancy control method and device

Abstract

The invention provides a server fan redundancy control method, which comprises the following steps that: in response to the startup of a server, a programmable logic device controls to output a corresponding pulse width modulation signal according to the coding information of a dial switch so as to control the rotating speed of a fan, and monitors a heartbeat signal of a BMC (Baseboard ManagementController); in response to the monitored normal heartbeat signal, the programmable logic device enables a pulse width modulation signal controlled and output by the BMC to be input into the fan to control the rotating speed of the fan; and in response to monitoring that the heartbeat signal is abnormal, the programmable logic device controls to output a corresponding pulse width modulation signalaccording to the encoding information of the dial switch so as to control the rotating speed of the fan. According to the method, energy consumption and noise in the starting process of the server can be reduced, it can be ensured that the fan maintains a certain rotating speed under the condition that the BMC is hung up, and the reliability of the system is improved.

Description

technical field [0001] The present invention relates to the field of server fan control, and more particularly, to a server fan redundant control method and device. Background technique [0002] The fan is an extremely important part of the server system, and it is responsible for the heat dissipation of the entire system. If the heat dissipation design is not reasonable, it will cause server failure or even downtime. The existing technical solutions mainly control the fan speed through the BMC according to a certain speed regulation strategy, but this method of purely relying on the BMC software to control the fan speed has obvious disadvantages: (1) The BMC configuration process takes a certain amount of time, and the BMC has not yet been configured. During this period of time, the fan speed is not controlled, and usually it will run at full speed, which will increase the power consumption and noise of the system; (2) When the BMC hangs up, the fan will also be uncontrolle...

AI Technical Summary

Problems solved by technology

The existing technical solutions mainly control the fan speed through the BMC according to a certain speed regulation strategy, but this method of purely relying on the BMC software to control the fan speed has obvious disadvantages: (1) The BMC configuration process takes a certain amount of time, and the BMC has not yet been configured. During this period of time, the fan speed is not controlled, and usually it will run at full speed, which will increase the power consumption and noise of the system; (2) When the BMC hangs up, the fan will also be uncontrolled, which will affect the entire system. Server system reliability poses a serious threat

Images