X440-24t fan operation temperature

[PeterK]

Hello, can anybody tell me at which temperature the fan in a Summit X440-24t starts running? I can't find informations about in the datasheet or userguide. In another thread it seems the the fan will start running at 48°C, but in datasheet the operating temperature is max. up to 45°C. I'm confused. Can you help me?

[Zelnosky__Kevin]

Peter,

Here is a GTAC article that states what you have already hit on. Looks like the fans do not start until you exceed 48 degrees.

http://gtacknowledge.extremenetworks.com/articles/Q_A/Is-it-normal-for/?q=Is+it+normal+for+Summit+X4...

I'm not sure about the data sheet listing 45 as the max, if you do a "show temp" on the switch, what range does it list?

[JeremyClarkson]

Im not sure I have asked this question before, when I switched this on the fan was running full all the time. apparently this is normal operation. Its quite loud and doesn't seem to alternate in speed.