How is the CSD cooled?

• A. Air/Oil heat exchanger
• B. Liquid cooling loop
• C. Air cooling
• D. Water cooling

Answer: (A)

Heat is carried away by an oil-based cooling path and then rejected to the surrounding air through an air/oil heat exchanger. The oil absorbs heat from the CSD’s internal components, circulating to the exchanger where a fan or airflow transfers that heat from the oil to the air. This setup is especially effective in compact, enclosed drives with high heat output, since it combines the high heat capacity of oil with efficient air-heat rejection.

Air cooling alone would struggle with the same heat load in a sealed enclosure, and a pure liquid cooling loop or water cooling would add complexity and plumbing that isn’t necessary here. The air/oil exchanger directly couples the oil’s thermal capacity to ambient air, making it the best fit.