Memory
Memory management is a huge topic, and to cover every detail of it would require a whole book in itself. My goal in this section is twofold: first, to provide enough information about how SQL Server uses its memory resources so you can determine whether memory is being managed well on your system; and second, to describe the aspects of memory management that you have control over so you can understand when to exert that control.
By default, SQL Server 2008 manages its memory resources almost completely dynamically. When allocating memory, SQL Server must communicate constantly with the operating system, which is one of the reasons the SQLOS layer of the engine is so important.
The Buffer Pool and the Data Cache
The main memory component in ...
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