Hi!
I have recently booted up a new CRS320-8P-8B-4S+ which currently is sitting in a rather cold room (below 15C) with 1 PoE-cam connected (802.3at) and it has OK fan speed on all internal fans (750-1100rpm) besides the psu1-fan which is running stable at 5400-5500rpm, even though it is at 20C.
0 poe-out-consumption 2.1 W
1 cpu-temperature 38 C
2 fan1-speed 720 RPM
3 fan2-speed 1020 RPM
4 fan3-speed 750 RPM
5 board-temperature1 22 C
6 board-temperature2 12 C
7 poe-out1-voltage 54.7 V
8 psu1-state ok
9 psu2-state not-present
10 psu1-power 17 W
11 psu1-temperature 20 C
12 psu1-fan-speed 5480 RPM
13 psu1-input-voltage 241 V
There are no SFP-modules inserted into the unit. The switch is running ROS 7.18.2.
Is this really normal? I cannot see why it would need to be running that fast when there is no need for it, is it possible to affect this? I’ve read on this forum, and other places, regarding high-RPM fans but I haven’t seen anything related to the PSU-fans specifically.
Cheers