Login via SSH onto your IX4-300d:
Navigate to the following folder:
In this folder are configurations for the fans in your ix4, there are 3 fan connectors inside the ix4-300d however only the first connector is used, there is a fan running at 126(1600RPM) by default. To change the fan speed open “pwm1_auto_point1_pwm” in your favorite editor:
The default value is 126, here is a list of values with their corresponding fan speed :
||Fan speed (+-RPM)
|0 – 60
Use common sense selecting your fan speed, don’t just enter the lowest value possible, find a reasonable value without letting your NAS get to hot.
My opinion :
I never let your NAS get over 70°, this value may be reached when unpacking downloads but should never be reached in normal conditions.
While slowing the fan down is a nice idea, ideally it would follow the hard drive temperature. The system temperature isn’t terribly important, but keeping your spinning hard drives cool is:
smartctl -a /dev/sda |grep 194\ Temperature
194 Temperature_Celsius 0x0002 064 061 000 Old_age Always – 36 (Min/Max 10/39)
In my IX4, with the fan running at 1610 RPM, my drives report they are at 36/36/35/36C.
Some afternoon, I’ll hack out a 10 liner bash script that tracks the warmest of the drives unless someone beats me to it.
Thanks I will try ASAP 🙂
Hi Scott, did you get around to doing that bash script?
Do we know what the command is to get the CPU temp?
I’m thinking of croning a script to measure the temperatures and update the pwm1_auto_point1_pwm file if things get to hot.
I would love to just be able to ssh in and set the fans to 100%. I already have ssh access, but I don’t know how to set the fans to 100%. Too bad they don’t have a simple fan_control command like in my WD EX2.
What would I need to change and what would need to be restarted (if anything)? I have no problem typing in commands! Thank you!
I think running “echo 115 >> /sys/devices/platform/mv64xxx_i2c.0/i2c-0/0-002e/pwm1_auto_point1_pwm” from ssh commmand line should update your fan speed.