To formulate proper cooling patterns in data centers, how should racks be arranged?

Question

Options

• AAlternating hot and cold aisles
• BOrganizing individual rows by application
• CPlacing hot spots in the corners of the room
• DSegmenting hot aisles in one room and cold aisles in another

• A
  70% (31)
• B
  16% (7)
• C
  5% (2)
• D
  9% (4)

Explanation

Racks should be arranged in alternating hot and cold aisles because this design directs airflow efficiently: cool air from raised floors or vents enters server intakes through the cold aisles, while hot exhaust from the back of servers is contained in the hot aisles and removed by cooling units, preventing hot and cold air from mixing and reducing cooling waste. Option B is wrong because organizing rows by application is a management or logical grouping strategy with no bearing on airflow patterns. Option C is wrong because concentrating heat in corners creates hot spots that are harder to cool uniformly, worsening thermal management. Option D is wrong because physically separating hot and cold aisles into different rooms is impractical and defeats the purpose of pairing hot exhaust directly with cooling return paths.

Memory tip: Think of hot-cold-hot-cold like a sandwich pattern down the data center floor - each cold aisle feeds server fronts, each hot aisle collects server exhaust, and the alternating layout keeps the two airstreams from ever meeting.

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