Many server motherboards, including the Supermicro X10 series, have their fans monitored by the BMC, which automatically attempts to recover stalling (of the motor, not in the aerodynamic sense) fans by spinning them up to maximum (PWM set to 100% speed). This behavior is determined by the sensor thresholds.
Supermicro X10 motherboard fan profiles are controlled via IPMI. Unfortunately, only very basic functions are exposed via its web interface and Supermicro's own IPMI utility is superbly...
How To: change sensor thresholds with IPMI using ipmitool
Supermicro X10 motherboard fan profiles are controlled via IPMI. Unfortunately, only very basic functions are exposed via its web interface and Supermicro's own IPMI utility is superbly...
How To: change sensor thresholds with IPMI using ipmitool