The IX4’s fans are quite loud and always spinning the same speed whatever the temperature may be inside your NAS. In this guide, I will lower the fan speed and quieten your NAS. Make sure to test these settings thoroughly before applying them as setting the speed to low may cause your NAS to overheat during long operations.
Autoset fan speed on boot
To keep your fan speed after rebooting, edit your startup script :
nano /opt/init-opt.sh
Paste this line in your script, change the 115 value to anything you are comfortable with:
#Fan speed Setting echo 115 >> /sys/devices/platform/mv64xxx_i2c.0/i2c-0/0-002e/pwm1_auto_point1_pwm
Save the file with CTRL+O and Enter, exit the editor with CTRL+X. Reboot and your fan speed will run at your custom speed.
Temperatures can be checked from the WebGui under “System Status”:
Fan speed can be checked under the “Fan” tab:
5 Responses
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.