3.5. Server consolidation and virtualization

The arrival of personal computer networks marked a shift away from "big iron" mainframes and dumb terminals to a decentralized processing model comprised of many (relatively cheap) servers and lots of personal computers. In many ways, we've come full circle, with a shift back to a centralized model of SANs and virtualized servers running on fewer, more powerful servers.

In recent years, the shift toward server consolidation and virtualization has gained pace, and in the years ahead, the idea of a dedicated, nonvirtualized server may seem quite odd. From a SQL Server perspective, this has a number of important ramifications. Before we look at the considerations and differences, let's begin by taking ...

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