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Dust and heat in a data center,, sucks!!
Therefore, I am very careful about changing the window in my data center. Do not make, too much dust, and try to catch the dust that is made.
It is the coming of summer and the window is to the south,, where the sun also shines from. There is really no need for the sun to warms up the data center. so I do what I can to keep it out.