JorgeB

The same tunables results for me happen when there is a bus bottleneck or it’s hitting the maximum speed of the slowest disk in all settings. Are all your WD30EZRX disks 1TB/platter your do you have some 750GB/platter? If all are 1TB/platter parity check speed should start at 145/150MB/s, if you have at least one 750GB/platter parity should start at about 125/130 Mb/s. But this can’t explain that according to what you posted in the SAS2LP thread, your starting speed is higher than the SAS2LP and in the end the average speed is lower.

Never had any problems and most of my servers only have 4Gb, but take note of original values just in case.

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