SK0-004 · Question #104
A technician is installing a rack mounted server into a rack in a datacenter with CRAC units and blanking panels. Blanking panels are used to:
The correct answer is B. limit airflow leakage in the rack. Blanking panels are flat covers installed in unused rack unit (U) slots. Their primary purpose is airflow management: they block gaps in the rack face that would otherwise allow hot exhaust air from the rear of the rack to recirculate back to the front cold-air intake (a…
Question
A technician is installing a rack mounted server into a rack in a datacenter with CRAC units and blanking panels. Blanking panels are used to:
Options
- Alower the UPS power requirements.
- Blimit airflow leakage in the rack.
- Climit the amount of servers that will fit into the rack.
- Dcolor match the server color.
How the community answered
(32 responses)- B91% (29)
- C6% (2)
- D3% (1)
Explanation
Blanking panels are flat covers installed in unused rack unit (U) slots. Their primary purpose is airflow management: they block gaps in the rack face that would otherwise allow hot exhaust air from the rear of the rack to recirculate back to the front cold-air intake (a phenomenon called hot air bypass or recirculation). By sealing empty spaces, blanking panels force cool air from the CRAC units to flow properly through equipment front-to-back, improving cooling efficiency and preventing thermal hotspots. They have no effect on UPS power draw, server capacity limits, or aesthetics.
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