Definition: Hard Disk (HD)


Medium for permanent storage of data. Magnetic platters, electronics and mechanics make up a hard disk. The platters are fixed to a spindle. On each side of a platter there is a read/write head. Each platter is divided in to tracks, which again is divided into sectors. A characteristic with hard disks is that the platters and the mechanics are in an airtight enclosure, and that the read/write heads do not touch the platters as long as the platters are rotating. See fly height.




DID YOU KNOW?  DATA RECOVERY FACTS AND TERMINOLOGY:

Data Recovery Fact

EOD

End Of Data. Electronic or magnetic sign, a part of the low-level format on tapes. EOD signals the end of data.

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