JorgeB

Poll_attributes is for reading disk temperatures, defaults to 1800sec, doesn’t affect speed unless set too low so it’s constantly polling the disks. In Unraid 6 md_write_limit is not visible in the GUI, I don’t know if it’s still used but I still set it to the value recommend by tunnables, you can find all 3 settings in your flash /config/disk.cfg As for what values to set I always choose unthrottled but it depends on the amount of RAM you have, settings will only take effect after rebooting.

I believe that it is always better than leaving it on overheating, the disk will cool down slowly, also you can set a low critical temp, in my case my disks are normally at around 35C/95F, my Hot warning is at 40C/104C and Critical at 45C/113F, I now that's a low critical temp but if any of my disks reach 45C there's something wrong with the cooling. Would like to add to my request: send email before shutdown like "disk x reached critical temp, server shutdown in 60 seconds" not so important but nice, possibility to abort the shutdown Thanks

Would love an option for the server to perform a clean shutdown if a disk reaches critical temp. Yesterday a fan from a 5in3 cage went bad and thanks to notifications system I got an email and was able to remotely shutdown my server, but then I thought, what if I was somewhere without internet? Or if the fan broke during the night? I would wake up to 5 cooked disks :'( Thanks in advance.

I used rsync -av --progress --remove-source-files /mnt/diskX/ /mnt/diskY/ to convert my disks to XFS and one of them red balled during rsync, in my case it corrupted one file.

I just added a cache drive (Samsung SSD 840 EVO 120GB) to my N40L server and while the reads speeds are what I expected, maxing out my gigabit lan, write speed to the cache drive is only about 50MB/s. I can write to the array at close to 40Mb/s, so was expecting more. Write cache in ON in the bios, tried the tweak below from another post and it's the same, anything more I can try? echo 50 > /sys/devices/system/cpu/cpufreq/ondemand/up_threshold & logger Go Script - ondemand up_threshold set to 50 echo 50 > /sys/devices/system/cpu/cpufreq/ondemand/sampling_down_factor & logger Go Script - ondemand sampling_down_factor set to 50 Thanks