A rack is a cabinet for servers and network equipment. In the past, a rack often consumed merely 0.5 to 1 kilowatt of electricity. Today, many systems use between 8 kW and 10 kW per rack. In the near future, individual racks are likely to reach values of up to 100 kW. These figures indicate that the future will see much higher numbers of much more powerful devices operating within the same space than ever before.
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