Hello anouacer
anouaceri wanna turn it off sometimes, to be on the calm, but i don't know if turnning of, then turnning on the server is bad or not for the server (the material)
It is perfectly fine to turn the server off every night. Turning the server on and off repeatedly in a short amount of time does cause additional wear and tear on the hardware components, but a couple of times per day is perfectly fine. Turning computers on and off repeatedly cause the components to cool and heat over and over. This causes them to wear out at a faster rate. This is not much of an issue with newer computers as they are typically manufactured with components that handle the extreme temperature changes better.
anouaceri did it two or three times then i stopped beacause the noise that te server maked was amazing (such as a plane that is ready to fly off :p)
This is normal. When the server is first powered on it will run all fans at maximum RPM until all of the BIOSs come online. Then the BMC/iDRAC will handle the fan speeds and adjust them.
Thanks