Question: Consider a hard disk with the following characteristics: Average seek time: 6ms Average rotational delay: 2ms Page transfer time: 0.03ms Assume the disk has one

Consider a hard disk with the following characteristics:

Average seek time: 6ms Average rotational delay: 2ms Page transfer time: 0.03ms

Assume the disk has one platter with two surfaces

Question 1. Estimate the time to read a list of 80 pages from disk, where the pages are randomly distributed in tracks of a single cylinder.

Question 2. Estimate the time to read a list of 80 pages from disk, where the pages are randomly distributed across the disk.

Question 3. Estimate the time to read a list of 90 pages from disk, where the pages are arranged consecutively in tracks of a single cylinder.

Question 4. Suppose we dont care about the order in which the 80 pages are read. Suggest how to speed up the times for Questions 1 and 2 above.

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