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# iDRAC7 fan control
A simple script to control fan speeds on Dell generation 12 PowerEdge servers.
If the inlet temperature is above 35deg C enable iDRAC dynamic control and exit program.
If inlet temperature is below 35deg C set fan control to manual and set fan speed to predetermined value.
The tower servers T320, T420 & T620 inlet temperature sensor is after the HDDs so temperature will be higher than the ambient temperature.
A simple script to control fan speeds on Dell generation 12 PowerEdge servers.<br>
If the inlet temperature is above 35deg C enable iDRAC dynamic control and exit program.<br>
If inlet temperature is below 35deg C set fan control to manual and set fan speed to predetermined value.<br>
The tower servers T320, T420 & T620 inlet temperature sensor is after the HDDs so temperature will be higher than the ambient temperature.<br>
As you may have found out when you cross flash a Dell H310 raid controller to IT mode and as soon as the iDRAC detects a that a drive has been inserted the fans spin up and get loud even when the ambient temperature is low say 20deg C. This is as designed by Dell, which sucks.