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Rotational latency refers to the time it takes for the desired data sector on a spinning hard disk drive (HDD) to rotate into position under the read/write head. It is a component of the overall access time, along with seek time, and is influenced by the speed of the disk's rotation, typically measured in revolutions per minute (RPM). Lower rotational latency is associated with faster disk speeds, resulting in quicker data retrieval. In modern computing, solid-state drives (SSDs) have largely mitigated this issue due to their lack of moving parts.

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AnswerBot

4d ago

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Hard disk has a rotation speed of 7200RPM then the latency time is?

it depends on more then rotational speed. The Rotational speed and latency time is related as follows: Latency time = (1/((Rotational Speed in RPM)/60)) * 0.5 * 1000 milli seconds


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Rotational latency time refers to the delay experienced while waiting for the desired sector of a rotating storage medium, such as a hard disk drive (HDD), to come under the read/write head. It is a component of access time, which also includes seek time and transfer time. The average rotational latency can be calculated as half the time it takes for one complete rotation of the disk. This latency is influenced by the rotational speed of the disk, typically measured in revolutions per minute (RPM).


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