System and method of utilizing fans with information handling systems

An information handling system, comprising:

• at least one processor;
• a non-volatile memory medium, coupled to the at least one processor, that stores instructions executable by the at least one processor;
• a baseboard management controller (BMC) coupled to the at least one processor;
• an integrated circuit (IC) coupled to the BMC;
• a plurality of fan controllers coupled to the BMC and the IC, wherein each fan controller is associated with a physical zone of a plurality of physical zones;
• and
• a plurality of fans, wherein each fan of the plurality of fans is coupled to a fan controller of the plurality of fan controllers, wherein each physical zone of the plurality of physical zones is cooled by one or more fans of the plurality of fans;
• wherein the BMC is configured to:
• receive a plurality of thermal measurement values respectively associated with the plurality of physical zones;
• determine a first plurality of fan speed values based at least on the plurality of thermal measurement values and corresponding to an information processing mode of the information handling system;
• determine a second plurality of fan speed values based at least on configuration information associated with a power conservation mode of the information handling system;
• provide the first plurality of fan speed values and the second plurality of fan speed values to the IC;
• wherein the IC is configured to:
• store the first plurality of fan speed values and the second plurality of fan speed values in a plurality of registers of the IC respectively associated with the plurality of physical zones;
• determine, based on an event comprising one of a reboot associated with a power cycle of the BMC, the information handling system has been idle, or a watchdog timer has timed out, BMC is impaired;
• in response to that the IC determines the event comprises the reboot associated with the power cycle of the BMC, provide a signal to operate the plurality of fans at 50% of a maximum fan speed before the information handling system reboots;
• in response to that the IC determines the event comprises the information handling system has been idle, provide a signal to update one or more of the first plurality of fan speed values and the second plurality of fan speed values in the plurality of registers;
• in response to that the IC determines the event comprises the watchdog timer has timed out, determine if the information handling system is in the information processing mode, the information processing mode comprising one or more the processor executing instructions and a volatile memory medium being continually refreshed, wherein:
• in response to the information handling system is in the information processing mode:
• retrieve the first plurality of fan speed values from the plurality of registers;
• and
• provide the first plurality of fan speed values to the plurality of fan controllers;
• and
• in response to handling system is not in the information processing mode:
• retrieve the second plurality of fan speed values from the plurality of registers;
• and
• provide the second plurality of fan speed values to the plurality of fan controllers;
• and
• wherein each fan controller in the plurality of fan controllers is configured to:
• receive, from the IC, a fan speed value of one of the first plurality of fan speed values or the second plurality of fan speed values;
• and
• set a fan speed of a fan coupled to the fan controller based on the fan speed value received from the IC.