Abstract: In some examples, a system may include a plurality of cooling distribution units (CDUs) to control cooling of a plurality of computing devices based in part on average differential pressure between a supply and return for each of the plurality of CDUs, temperature of coolant in a loop flowing between each of the plurality of CDUs and computing devices, and facility valve position for each of the plurality of CDUs, wherein one CDU of the plurality of the CDUs is nominated lead CDU and broadcasts flow rate to the plurality of CDUs to follow.

Abstract: A leak mitigation system for a cooling system may include an isolation valve, a controller, and a computer-readable medium. The isolation valve may selectively isolate an expansion tank from a closed loop containing a coolant circulated by a primary pump having a pump inlet. The expansion tank may maintain the coolant at a predetermined pressure at the pump inlet in the closed loop. The controller may communicate with the primary pump and the isolation valve. The computer-readable storage medium may include instructions executable by the controller to: in response to a detection of a leak of the coolant from the closed loop, shut down the primary pump; and close the isolation valve to isolate the expansion tank from the closed loop.

Abstract: An example apparatus is provided herein. The apparatus includes a coolant distribution unit and a liquid cooled sub-ambient unit. The coolant distribution unit provides a liquid to a set of liquid cooled cold plates to cool a first electronic component. The liquid cooled sub-ambient unit provides air to cool a second electronic component.

Abstract: A leak mitigation system for a cooling system may include an isolation valve, a controller, and a computer-readable medium. The isolation valve may selectively isolate an expansion tank from a closed loop containing a coolant circulated by a primary pump having a pump inlet. The expansion tank may maintain the coolant at a predetermined pressure at the pump inlet in the closed loop. The controller may communicate with the primary pump and the isolation valve. The computer-readable storage medium may include instructions executable by the controller to: in response to a detection of a leak of the coolant from the closed loop, shut down the primary pump; and close the isolation valve to isolate the expansion tank from the closed loop.

Abstract: In some examples, a system may include a plurality of cooling distribution units (CDUs) to control cooling of a plurality of computing devices based in part on average differential pressure between a supply and return for each of the plurality of CDUs, temperature of coolant in a loop flowing between each of the plurality of CDUs and computing devices, and facility valve position for each of the plurality of CDUs, wherein one CDU of the plurality of the CDUs is nominated lead CDU and broadcasts flow rate to the plurality of CDUs to follow.

Abstract: Examples herein disclose a coolant distribution unit (CDU) including a valve, a pump, and a controller. The valve controls a coolant through the CDU and the pump maintains a differential pressure of coolant to data center components. The controller exclusively controls the CDU to determine a position of the valve. In the response to the determined position of the valve, the CDU adjusts a speed of the pump.

Abstract: An example apparatus is provided herein. The apparatus includes a coolant distribution unit and a liquid cooled sub-ambient unit. The coolant distribution unit provides a liquid to a set of liquid cooled cold plates to cool a first electronic component. The liquid cooled sub-ambient unit provides air to cool a second electronic component.

Abstract: Examples herein disclose a coolant distribution unit (CDU) including a valve, a pump, and a controller. The valve controls a coolant through the CDU and the pump maintains a differential pressure of coolant to data center components. The controller exclusively controls the CDU to determine a position of the valve. In the response to the determined position of the valve, the CDU adjusts a speed of the pump.