Question 1(10 Points)
What are the advantages of using a glass substrate for a magnetic disk?
Question 2 (10 Points)
Explain serpentine recording.
3.Explain the difference between a simple CAV system and a multiple zone recording system.
4.What differences between a CD and a DVD account for the larger capacity of the
DVD?
5.Consider a single-platter disk with the following parameters:
What is the average seek time?
***Explain your reasoning and show your mathematical calculations on how you derived your answer
6.Consider a single-platter disk with the following parameters:
What is the average rotational latency?
***Explain your reasoning and show your mathematical calculations on how you derived your answer
7.Consider a single-platter disk with the following parameters:
What is the transfer time for a sector?
***Explain your reasoning and show your mathematical calculations on how you derived your answer
8.Consider a single-platter disk with the following parameters:
What is the total average time to satisfy a request?
***Explain your reasoning and show your mathematical calculations on how you derived your answer
9.Consider a magnetic disk drive with 8 surfaces, 512 tracks per surface, and 64 sectors per track.
What is the disk capacity?
**Explain your reasoning and show your mathematical calculations on how you derived your answer
10.Consider a magnetic disk drive with 8 surfaces, 512 tracks per surface, and 64 sectors per track.
11. Consider a magnetic disk drive with 8 surfaces, 512 tracks per surface, and 64 sectors per track.
Assume this file is stored in successive sectors & tracks of successive cylinders, starting at sector 0, track 0, of cylinder i.
Estimate the time required to transfer a 5-MB file.
**Explain your reasoning and show your mathematical calculations on how you derived your answer
12. Consider a magnetic disk drive with 8 surfaces, 512 tracks per surface, and 64 sectors per track.
What is the burst transfer rate?
**Explain your reasoning and show your mathematical calculations on how you derived your answer
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