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Readynas Pro 6 (OS 6) Fan Control with Noctua System Fan stops
I was given a ReadyNas Pro 6 and upgraded it to OS 6 (latest firmware). I soon replaced the Crown system fan with a Noctua NF-A12x25FLX 3-pin, to get efficient and relatively quiet cooling. The Noc...
This thread also mentions the fan speed override: https://community.netgear.com/t5/Using-your-ReadyNAS-in-Business/OS-6-5-2-still-causes-fan-issues-on-the-PRO-6-like-OS-6-5-1-but/m-p/1138003#M115451
Let us know if this works...
If I remember correctly, the noctua fans need something done to the cables to work
Equinox1 wrote:
If I remember correctly, the noctua fans need something done to the cables to work
Thanks. I'm aware of discussion about the PSU fan wiring and also about the CPU fan needing to be a four pin, but I *thought* the Crown system fan is a 3-pin and so is this Noctua and I thought that this means they would be a standard connection and interchangeable? Can we confirm/deny whether the Crown/Noctua are interchangeable?
The strange thing here is that the system runs just fine, but - inexplicably - either just after boot, or a few hours (or days) after boot, the fan will stop. It seems like something in software must be changing and - once changed - only a reboot will fix it.
Your problem is that your fan's minimum speed is higher than the stock one. The fan comes on faster at power-on, and then gets trimmed to the necessary speed to maintin the desired temperature. But the OS is trying to trim your fan to something below it's minimum..
When they added the ability to select cool, balanced. or quiet for the fan setting, they seem to have removed the way to set the minimum speed. It's not in the usual places, anyway. Neither changing the min fan speed in system.conf nor adding a min_fan_speed_override file work.
While it likely flies in the face of why you changed the fan, you can try using the "cool" setting.
Sandshark wrote:
Your problem is that your fan's minimum speed is higher than the stock one. The fan comes on faster at power-on, and then gets trimmed to the necessary speed to maintin the desired temperature. But the OS is trying to trim your fan to something below it's minimum..
When they added the ability to select cool, balanced. or quiet for the fan setting, they seem to have removed the way to set the minimum speed. It's not in the usual places, anyway. Neither changing the min fan speed in system.conf nor adding a min_fan_speed_override file work.
While it likely flies in the face of why you changed the fan, you can try using the "cool" setting.
Your analysis of the problem makes sense. I'm finding that the problem often occurs when the unit is first switched on. It has done this this morning, for example, and it's quite cool here today, so the system would no doubt be trimming the fan speed right back.
I'm less confident that the solution will work as I believe I've tried the three settings (cool, balanced, quiet) with no difference. I'll check again with the system set "cool" again. Also, the Noctua has two types of "Low Noise Adapter" that can be inserted in the cable to reduce the maximum speed. Is it worth experimenting with those?
I wonder if anyone else is aware of where the minimum fan speed setting is now located in the system files. To change that would seem the most obvious thing to do, of course.
Thanks again.
jolo2 wrote:
Sandshark wrote:
Your problem is that your fan's minimum speed is higher than the stock one. The fan comes on faster at power-on, and then gets trimmed to the necessary speed to maintin the desired temperature. But the OS is trying to trim your fan to something below it's minimum.
One thing I don't understand here is why the fan doesn't re-start as the system heats up. The above explanation makes sense, but once the fan has stopped the temperature rises and - I assume - the OS then raises the volts to the fan to generate more cooling. I assume that should re-start the fan; but that never happens.
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