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If a disk drive’s rotational speed is 10000 revolutions per minute, what is its average rotational laten

If a disk drive’s rotational speed is 10000 revolutions per minute, what is its average rotational latency?

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A.
0.003 milliseconds

B.
0.05 milliseconds

C.
3 milliseconds

D.
5 milliseconds

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6 Comments on “If a disk drive’s rotational speed is 10000 revolutions per minute, what is its average rotational laten

  1. SP says:

    Forgot to explain:
    The average rotational latency for a disk is half the amount of time it takes for the disk to make one revolution

    so (1 / (RPM / 60)) * 0.5 * 1000

    0.5 is for the half
    RPM/60 to get it in seconds and * 1000 to covert to miliseconds




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  2. L. Freitas says:

    RPM = 10000

    Average Seek Time is equal a half of a turn,

    Rotacional per second (rps) = Rotational per minute/60.

    A half a turn is (1/2 or 0,5)/(rps).

    R = (0,5)/(RPM/60)
    R = (0,5)/(10000/60)
    R = 0,5 / 166.6 <- rps
    R = 0,003 seconds or 3 milliseconds. :)

    \O/ \O/ \O/




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