Patent attributes
A rack cooling system includes a plurality of electronic devices mounted in a rack and a plurality of shared rack-level fans arranged in an array and coupled to a rack. A fan controller receives one or more condition signals indicating thermal conditions in the electronic devices and generates a plurality of control signals for controlling the shared rack-level fans. The fan controller generates the plurality of control signals based on respective thermal conditions in respective electronic devices in respective positions in the rack and the plurality of control signals causes different respective groups of one or more shared rack-level fans in different locations in the array to induce air flow through the electronic devices, wherein separate ones of the two or more groups of one or more shared rack-level fans operate at different speeds or angles.
