Question: Consider a single-platter disk with the following parameters: rotation speed: 7200rpm; number of tracks on one side of platter: 30,000; number of sectors per track:

Consider a single-platter disk with the following parameters: rotation speed: 7200rpm;

Consider a single-platter disk with the following parameters: rotation speed: 7200rpm; number of tracks on one side of platter: 30,000; number of sectors per track: 600; seek time: one millisecond ( ms) for every hundred tracks traversed. Let the disk receive a request to access a random sector on a random track and assume the disk head starts at track 0 . (a) Discuss hard disks including density, platters, tracks, sectors, and cylinders. (5 marks) (b) What is the average seek time? (5 marks) (c) What is the average rotational latency? (5 marks) (d) What is the transfer time for a sector? (5 marks) (e) What is the total average time to satisfy a request? [25 Mark]

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