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ReadyNAS 4200V2 OS6.6.1 fan control
OK, I couldn't resist picking up an inexpensive ReadyNAS 4200V2. I ran it a short while on OS 4.2.30, then upgraded to 6.6.1. While the fans ran a bit higher than I thought they needed to on 4.2.x with only 4 drives installed, it was way better than with OS 6.6.1. Here is what I have now: Everything starts out at a very nice speed, mid 2000's for case fans and lower for the CPU fan, all lower and quieter than on 4.2.x. But fan speeds step up in just a couple minutes to max even though all temperatures are well within normal bounds, without regard to whether fan control is "cool", "balanced", or "quiet". One major point, the system only has (and is only supposed to have) 4 fans. So "Fan 3" is a phantom. Maybe this is the crux of the problem. Is it overcompensating for a "bad" fan? It's reporting it in the log as well has here. I believe the motherboard does have another fan header on it. Maybe the 4220 has 5 fans? Based on what I saw on OS 4.2.x, I assume that "Fan 2" is the CPU fan, which has a lower max speed. Does the 4220 have a CPU fan or passive cooler? Maybe somebody has mistakenly used 4220 parameters for the 4200, even though it does properly identify itself as a 4200V2 on the Overview page? It would be nice if the fans were properly labeled. I have no idea what temps 1 - 3 are. Maybe one is CPU case temp? Does it even know which temperature the CPU fan affects? The performance chart shows no entries for CPU or System temperature, they are stuck at zero. So, there is another possible cause. Nothing to control on, so no control? System is currently in a resync, so more disk activity. But with only 4 drives installed, this is ridiculous. I don't think the fans can take this for long. Is there a file that controls this? I seem to recall seeing one mentioned in another thread, but couldn't find it in a search. I'm very comfortable with SSH and am willing to run some tests, as this is not currently being used for anything but experimentation.
