What is the primary benefit of rear-door heat exchangers (RDHx) attached to server rack doors?
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A
They provide physical security by locking the rear of racks
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B
They capture and remove heat directly at the rack exhaust, preventing hot air from entering the room environment
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C
They increase server density by removing the need for internal server fans
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D
They supply cold water directly to server CPUs via tubing through the rear door