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Once the head has reached the desired track, the time spent waiting for the sector to be accessed to appear under the head is called the _______________

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Once the head has reached the desired track, the time spent waiting for the sector to be accessed to appear under the head is called the _______________ (a) Access time (b) Average seek time (c) Seek time (d) Rotational latency time I have been asked this question in class test. My question is taken from Magnetic Disk and Flash Storage topic in section Storage and File Structures of Database Management

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Correct option is (d) Rotational latency time To explain: Rotational speeds of disks today range from 5400 rotations per minute (90 rotations per second) up to 15,000 rotations per minute (250 rotations per second), or, equivalently, 4 milliseconds to 11.1 milliseconds per rotation.

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