Patent ID: 8817474

Claim:
A multi-rack assembly comprising: a first electronics rack, the first electronics rack comprising: at least one first rack electronic component to be cooled; at least one cooling unit disposed within the first electronics rack and coupled in fluid communication with a primary coolant loop in the first electronics rack to, at least in part, facilitate cooling of the at least one first rack electronic component of the first electronics rack, the at least one cooling unit providing cooled coolant to the primary coolant loop; and a second electronics rack, the second electronics rack comprising: a secondary coolant loop, the secondary coolant loop being coupled in fluid communication with the at least one cooling unit disposed within the first electronics rack, wherein the at least one cooling unit disposed within the first electronics rack provides cooled coolant to the secondary coolant loop to, at least in part, facilitate extracting heat generated within the second electronics rack; and a controller to automatically control flow of cooled coolant from the at least one cooling unit in the first electronic rack to the secondary coolant loop of the second electronics rack depending, at least in part, on cooling requirements of the first electronics rack.