Chapter 8.doc

Chapter 8.doc - and 10,000 rpm d. Platters should never be...

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Chapter 8 Hard Drives I. Hard Drives a. Gets the most anguish and attention b. Was not visualized as part of the first IBM computer c. They are faster and can hold thousands times more data than floppy drives II. Inside the drive a. Composed of platters with read/write head on actuators b. Platters are made of aluminum i. Coated with a magnetic medium c. The heads float on a cushion of air above the platters (spin at 3,500
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Unformatted text preview: and 10,000 rpm d. Platters should never be exposed to the outside air i. A dust particle will act as a mountain for the heads e. To keep clean air inside the Hard Disk uses a tiny heavily filtered aperture III. Data Encoding a. HDD stores data in tiny magnetic fields; b. Each field can switch back and forth i. Called Flux reversal IV. Plugging it in a....
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