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What is head seek?

The head seek is a measure of performance relating to a rotating hard drive. The Head Seek time is theamount of time it takes for the headon the actuator armof a disk drive to find the appropriate track on the diskon which to write or load information. Hard disk drives store data in sectorsthat are located within grooves of the hard disk drives, which are called tracks. Once the hard disk receives a command to load or store data, an actuator arm attached to the hard disk will guide the head of the arm tothe appropriate track in order to find the correct sector. The head of the actuator arm will then either store data or read data from that sector, depending on the command. Current rotating hard disk drives have an average head seek time of approximately nine milliseconds. However, the very first hard disk drive had an average seek time of six-hundred milliseconds in the late 1950's.

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