A disk unit has 24 recording surfaces. It has a total of 14,000 cylinders. There is an

Question:

A disk unit has 24 recording surfaces. It has a total of 14,000 cylinders. There is an average of 400 sectors per track. Each sector contains 512 bytes of data.

(a) What is the maximum number of bytes that can be stored in this unit?

(b) What is the data transfer rate in bytes per second at a rotational speed of 7200 rpm?

(c) Using a 32-bit word, suggest a suitable scheme for specifying the disk address, assuming that there are 512 bytes per sector.

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