InterestingMAPT wrote:In NAS MotherBoard BIOS all fan control function are disabled, from which I conclude that the fan is controlled by script in ADM, based on readings of temperature sensors on CPU\MB or the hard disk temperature values in SMART (parameter 194). Fan speed is set by utility "fanctrl -setfanpwm fan_ID PWM_value", HDD temp I can get from "smartctl" utility output. And by all signs script run at every 1-2 seconds, because when you try to set the fan speed command "fanctrl -setfanpwm fan[0] 132", fan speed increase and then decrease again after 2 seconds........
Too bad that Asustor not take seriously this problem into account with a better "auto" fan control . Today, auto fan control is nothing, it's always 700rpm with one disk at 37°C or two disks at 41°C and 47°C ( both disks are in compatibility list )
Because of lack of precise fan control , I would like to change fan speed manually, lower it when DD are idle, and higher it when working.