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.




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Data Recovery Fact

Interface

Defined/standard transition/link - hardware or software. Rules for communicating with a unit. Example: See SCSI.(User interface) The 'face' of the computer. The part of the operating system that the user communicates with directly.

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