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Control method of Rack server backup fan

A backup fan and control method technology, applied in the field of server heat dissipation, can solve problems such as overheating of components, insufficient fan air volume, waste of power consumption, etc., and achieve the effects of improving stability and avoiding waste of power consumption

Inactive Publication Date: 2017-05-31
ZHENGZHOU YUNHAI INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, two consequences are likely to occur. One is that the cabinet runs at a low load, and the air volume provided by the fan is greater than the air volume required for heat dissipation, resulting in waste of power consumption; the other case is that once the cabinet runs at a high load, It is prone to the risk of insufficient fan air volume and overheating of components

Method used

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  • Control method of Rack server backup fan

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A backup fan control method for a Rack server. When the RMC is abnormal and loses the control function for the fans of the entire cabinet, the Rack server will use the backup fan control method, and the fan control is directly performed by the node middle board to ensure safe and efficient operation of the system.

Embodiment 2

[0020] On the basis of Embodiment 1, if the RMC fails in this embodiment, the node middle board detects that the communication with the RMC is interrupted, the node middle board obtains the PWM value sent by the BMC of the corresponding node, compares the obtained PWM values, and sends the maximum value To the fan control board, the fan control board sends a PWM signal to the fan module according to the value to complete the speed adjustment process, ensuring that the fan speed is adjusted according to the actual heat dissipation requirements of the system.

Embodiment 3

[0022] On the basis of Embodiment 2, the node BMC of this embodiment calculates the required fan PWM value according to the temperature and variation of the components at that time according to the internally written fan control strategy, and transmits the value to the corresponding node through I2C Middle plate.

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PUM

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Abstract

The invention discloses a control method of a Rack server backup server; when an RMC (remote management center) is abnormal and lose the control for adjusting a cabinet fan, a Rack server controls the fan directly via a node intermediate plate. The control method has the advantages that the fan can operate at a system-required speed when an RMC module is abnormal, power waste or component over-heat is avoided, and operational stability of the Rack cabinet is improved.

Description

technical field [0001] The invention relates to the technical field of server heat dissipation, in particular to a method for controlling a backup fan of a Rack server. Background technique [0002] The management board (RMC) is the management center of the large-scale server Smart Rack, responsible for node management, power management, and fan management in the system. The main design includes out-of-band management of nodes based on IPMB specification, management of AC / DC power supply based on PMBUS protocol, I2C-based fan speed adjustment and air volume compensation adjustment and other function management. The management design adopts the two-level management method, the RMC is the first-level management, and the node mid-plane is the second-level management. The management system consists of RMC (realizing system monitoring, management, and alarming), node mid-board (realizing out-of-band monitoring, secondary management, alarm reporting, and fan monitoring of all nod...

Claims

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Application Information

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IPC IPC(8): G06F1/20G06F11/20
CPCG06F1/206G06F11/2028Y02D10/00
Inventor 王聪
Owner ZHENGZHOU YUNHAI INFORMATION TECH CO LTD
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