I use these in a datacenter environment and I can see in LibreNMS, that the fans have never spun up. The datacenter ambient temperature is 22-24 degrees.The unit has dual redundant power supplies and passive cooling case - for hot environments two redundant fans will automatically keep the system cool if needed.
From my understanding, the CPU in the 2004 is cooled by the passive/external heatsinkCCR 2004 does not have a passive cooling, it has 2 FANs, that is why i was wondering what is the RPM on your CRS so it becomes so noisy as you stated...
A device with no Fans has Passive Cooling System...From my understanding, the CPU in the 2004 is cooled by the passive/external heatsinkCCR 2004 does not have a passive cooling, it has 2 FANs, that is why i was wondering what is the RPM on your CRS so it becomes so noisy as you stated...
the fans are there to provide airflow to the optical interfaces, and should operate based on the highest inserted modlue temperature.
[xxxxxxx@crs312-4c-8xg-rm] /system/health/settings> /system/health print
Columns: NAME, VALUE, TYPE
# NAME VALUE TYPE
0 temperature 40 C
1 cpu-temperature 50 C
2 sfp-temperature 40 C
3 phy-temperature 58 C
4 fan1-speed 4095 RPM
5 fan2-speed 3780 RPM
6 fan3-speed 3930 RPM
7 fan4-speed 3825 RPM
8 psu1-state ok
9 psu2-state ok
$ system health print
Columns: NAME, VALUE, TYPE
# NAME VALUE TYPE
0 temperature 40 C
1 cpu-temperature 49 C
2 sfp-temperature 40 C
3 phy-temperature 56 C
4 fan1-speed 6465 RPM
5 fan2-speed 6060 RPM
6 fan3-speed 6285 RPM
7 fan4-speed 6165 RPM
8 psu1-state ok
9 psu2-state ok
Temperature is comparable, fans are not spinning.@CCR2004-1G-12S-2XS] /system/health> print
Columns: NAME, VALUE, TYPE
# NAME VALUE TYPE
0 temperature 65 C
1 cpu-temperature 47 C
2 sfp-temperature 65 C
3 switch-temperature 49 C
4 fan1-speed 0 RPM
5 fan2-speed 0 RPM
6 board-temperature1 44 C
7 board-temperature2 40 C
8 psu1-state ok
9 psu2-state ok
Its not fanless though ...Sorry for my late answer:
I purchased a CRS317-1G-16S+RM
Dual ARM cpu, 16 SFP+ cages, fully accelerated.
Sure, waiting for your news...On the CCR2004 fans are running idle with those values:
0 temperature 65 C
1 cpu-temperature 47 C
2 sfp-temperature 65 C
Like the CCR2004 but I am confident that fans will remain idle.
I think the switch problem is the non-ARM CPU which needs cooling.
I will report back on Saturday, stay tuned.
The switch will never run silently ...CPU and SFP temperature
If CPU or SFP temperatures exceed 58C, the fans will start to spin. The higher the temperature, the faster the fans will spin. For devices with PWM fans, as the CPU or SFP temperatures exceed 58C, the fans will linearly increase their RPM to try to keep the temperature at 58C if possible. For devices with DC fans, as the CPU or SFP temperatures exceed 58C, the fans will start spinning but at a higher minimum RPM by default. This may result in cooling the device to the point where the fans turn-off completely. After which the temperature may slowly increase to 58C and the fans will turn on again. Currently, there is one exception. The S+RJ10 modules have a temperature threshold of 65C before they trigger the fans. Since it's a higher temperature threshold, the fans will start spinning at a higher initial speed to cool the device.
I don't use the IN version, but according to the products page no ears are included. https://mikrotik.com/product/crs326_24g ... ifications+IN replaces the old +PC label, but I thought the CRS326 +IN lacked rackmount ears?