The following is a Plus Edition article, written by and copyright by Dick Eastman.
We often think of the computer as a device that sits on our desk or even as a laptop computer that weighs two or three pounds. However, servers in data centers generally are a bit bigger and much more powerful. Since the introduction of cloud computing, a computer might actually be a cluster of servers. A computer might be as a big as an entire data center or even several data centers, all of which are interconnected, providing both computing power and backup services to the other data centers. A user connects to that cloud and is unaware of which computer(s) he or she is using at the moment. The combination of all these individual servers appears as one computer in the eyes of the end user.
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