A hard disk system has the following parameters: Number of tracks = 500;…

ISRO Scientist/Engineer SC · 2015 · Computer ScienceModified — slightly modified from the official paper; see the solutionGATE · 2007 · ITModified — slightly modified from the official paper; see the solution

A hard disk system has the following parameters: Number of tracks = 500; Number of sectors/track = 100; Number of bytes/sector = 500; Time taken by the head to move from one track to adjacent track = 1 ms; Rotation speed = 600 rpm. What is the average time taken for transferring 250 bytes from the disk? Assume the conventional average seek distance is half of 500 tracks (250 tracks).

  1. A.

    300.5 ms

  2. B.

    255.5 ms

  3. C.

    255.0 ms

  4. D.

    300.0 ms

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