The data center concept has greatly evolved over the last few years, passing through many phases because of evolving technology, as illustrated in figure 7.1 below:
Figure 7.1 – Evolution of the Enterprise Data Center
At the time of their first appearance, data centers were centralized and used mainframes to manage the data. Mainframes, in turn, were managed using terminals, which are still used in modern data centers because of their resiliency, but they are quickly becoming . . .
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