A 255-GB disk has 65,536 cylinders with 255 sectors per track and 512 bytes per sector. How

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A 255-GB disk has 65,536 cylinders with 255 sectors per track and 512 bytes per sector. How many platters and heads does this disk have? Assuming an average cylinder seek time of 11 ms, average rotational delay of 7 msec and reading rate of 100 MB/sec, calculate the average time it will take to read 400 KB from one sector.
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Modern Operating Systems

ISBN: 978-0133591620

4th edition

Authors: Andrew S. Tanenbaum, Herbert Bos

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