CertiGuide to A+ (Core Hardware)  9  Chapter 0100:  Hard Drives       9  VIII  Physical Characteristics

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Each hard drive manufacturer weighs a great variety of different factors before going into production. The end result is each manufacturer has a slightly different architecture, known as the Geometry.

As a premise for understanding the following topics all that is needed at this point is there has to be a logical structure both for the mechanical and electromagnetic aspects of the drive. At least if it is ever going to store and retrieve information, it needs logic. Used in the context of hard drives, geometry carries with it a variety of sub-parts, which are reviewed in the upcoming section.

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