Suppose that a 5 MB file consisting of 1 KB logical blocks is stored on a disk drive with the following characteristics: Rotation speed: 8000 rpm Number of tracks on one side of platter: 10,000 Number of sectors per track: 500 Sector size: 1 KB Seek time: 1 ms for every hundred tracks traversed. a) Find average seek time, assuming the disk head starts at track 0. b) What is the best case for mapping logical blocks to disk sectors? Estimate the time required to read the file in this scenario and visually interpret it (design the process).
Suppose that a 5 MB file consisting of 1 KB logical blocks is stored on a disk drive with the following characteristics: Rotation speed: 8000 rpm Number of tracks on one side of platter: 10,000 Number of sectors per track: 500 Sector size: 1 KB Seek time: 1 ms for every hundred tracks traversed. a) Find average seek time, assuming the disk head starts at track 0. b) What is the best case for mapping logical blocks to disk sectors? Estimate the time required to read the file in this scenario and visually interpret it (design the process).
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Transcribed Image Text:Suppose that a 5 MB file consisting of 1 KB logical blocks is stored on a disk drive with
the following characteristics:
Rotation speed: 8000 rpm
Number of tracks on one side of platter: 10,000
Number of sectors per track: 500
Sector size: 1 KB
Seek time: 1 ms for every hundred tracks traversed.
a) Find average seek time, assuming the disk head starts at track 0.
b) What is the best case for mapping logical blocks to disk sectors? Estimate the time
required to read the file in this scenario and visually interpret it (design the process).
c) What is the worst case for mapping logical blocks to disk sectors? Estimate the time
required to read the file in this scenario and visually interpret it (design the process).
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