Servers heat up while they are running – that is to be expected. However, if a server gets too hot, physical damage can occur. If your server room has many servers in it, the collective heat of these machines will cause the temperature of the room to rise. The total heat within the room will mean that the cooling systems within each server will be sucking in warm air, making the onboard heating problem worse. Keeping the server room cool provides cold air to the onboard cooling systems of servers.