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Replacement fan ReadyNAS nv+ v2
I recently setup my ReadyNAS NV+ v2 from scratch with four 3 TB Hitachi DK7SAD300 drives, replacing the two 3 TB Western Digital WD30EFRX drives. This is now all working well, however recently the f...
Some more data from running overnight, temperature in the electric cupboard varied between 23.5 and 24.5 degrees so quite warm (not unusual for that place in the house).
I decided to set selfcontrolled to 1 in /ramfs/enclosure.cfg and set pwm to 200. Almost immediately, the fan speed stabilises around 2200 rpm. And the temperature remains around 40 degrees, I believe this is a much better setup than relying on the NAS to automatically regulate its temperature and fan speed!
root@vanrun:/tmp# cat /ramfs/enclosure.cfg
fan!!0!!desc=SYS,selfcontrolled=1,minrpm=2000,required=1,alternate=0,path=/proc/fan0_rpm,in_path=/proc/fan0_pwm
...
root@vanrun:/tmp# echo 200 > /proc/fan0_pwm
For those looking to collect similar data, here's the shell script I used. The date / time format allows for a smooth import as .csv into Excel or other tools.
root@vanrun:/tmp# cat log-rpm-fan-exp.sh
log=/tmp/log-rpm-fan-exp.log
while :
do
input=/var/log/frontview/enclosure.log
rpm=`cat /proc/fan0_rpm`
pwm=`cat /proc/fan0_pwm`
temp=`sed -n 1p $input | cut -c 27-30 | sed '/[0-9]\./s/\./,/g'`
disk1=`sed -n 5p $input | sed -r 's/([^0-9]*([0-9]*)){6}.*/\2/'`
disk2=`sed -n 6p $input | sed -r 's/([^0-9]*([0-9]*)){6}.*/\2/'`
disk3=`sed -n 7p $input | sed -r 's/([^0-9]*([0-9]*)){6}.*/\2/'`
disk4=`sed -n 8p $input | sed -r 's/([^0-9]*([0-9]*)){6}.*/\2/'`
date=`date +"%d/%m/%y %T"`
echo $date\;$temp\;$rpm\;$pwm\;$disk1\;$disk2\;$disk3\;$disk4 >> $log
sleep 5
done
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