one of my servers has the fans going very fast at 6K to 8K.

my second server of similar config is at a normal fan speed around 2K.

i have had this happen in the past and i think i updated the firmware which seemed to fix. but it seems to have reoccurred.

i have restarted the server and the fans are still going fast.

both servers are running BIOS

C200.1.4.1.0 (Build Date: 07/13/2011)

CIMC

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update:

I have just also just now tested to compleatly shutting down the server and rebooting which seems to have helped.

except now only the PSU fans are going around 5K

the system fans seem to have stablised back to normal 2-3K range.

my other UCS server PSU fans are running at 2 to 2.5K.

Tempreature is not an issue, they are both running approx same temps.

...and both are under minimal load

any ideas as to why the PSU fans are running high?