For years, when user demands required additional servers, the IT department would add a physical server box within the data center, as shown in FIGURE 8-2.
FIGURE 8-2 Servers originally required their own chassis, disk, power supply, and fan. They consumed considerable power, took up considerable space, and generated considerable heat within the data center.
Although the server box met user demands, each box consumed space within the data center and required considerable power.
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