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Forum Discussion
readynas 6.5.0 new fan speeds buggy
Upgraded a R516 yesterday from 6.4 to 6.5.0. Before the upgrade, the fan noise was generally minimal with fan speeds between 1K-1.5K rpm and drives kept at a uniform temperature of 48-53 degrees ...
Opening a support case is unnecessary. Your logs show you were only in Balanced mode for 3 minutes, which really didn't give the system a chance to cool down into the new temperature range.
Stay in Balanced mode if you want your disks to run at a lower temperature. The fan won't stay at 3K RPM forever unless it really needs to. It will only stay in that range long enough to get the disk temps down to the new lower threshold.
OK, so on the first try, I aborted the balance fan mode test due to complaints from those in the same room as the NAS that it was making it impossible to work when FAN was at 3600RPM.
This time, I provided warning that the loud noise would go away after 5 minutes....and it did, but things still aren't right.
Before 6.5 firmware, Drives averaged around 50-52 degrees and never went over 54. Fan noise was never problem.
Quiet mode is now having them average 52-54 and the highest temperature we see is spikes at 56 degrees. This is a tad too high for our liking. Average Fan RPM seemed to be between 800-1400rpm, with 1200 the most frequent. Quiet mode is however indeed quiet.
On to the new balanced, the fan has stabilized at 1802rpm - a huge bump up and really more than what was needed. Drives are now averaging ~45 degrees. We only wanted to reduce drive temps back to pre 6.5 status...2-4 degrees, not the 6-9 degrees and +600rpm. The increased fan speed is not horribly loud, but it is much louder than we'd like and I'm not sure how much power it is using. I'm guessing if we could manually set to ~1400-1500, about half way between quiet and balanced - we'd get closer to pre 6.5 behavior.
hard drive temp around 55 degrees is very high so durability will be in question
best to keep the temp below 48 degrees
In general temperatures for disks under 60 degrees are fine. In quiet mode the fans will still spin up if they need to.
mattmarlowe wrote:
The increased fan speed is not horribly loud, but it is much louder than we'd like and I'm not sure how much power it is using.
The power usage differential is negligible -- certainly less then 1 watt.
mattmarlowe wrote:
I'm guessing if we could manually set to ~1400-1500, about half way between quiet and balanced - we'd get closer to pre 6.5 behavior.
There are multiple ways to do that. The simplest way is to go back to Quiet mode and write, say, 1400 to /etc/frontview/min_fan_speed_override. This should work, after rebooting:
echo 1400 > /etc/frontview/min_fan_speed_override
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