Maurice Tutor

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  • MCS,PHD
    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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    Phoniex University
    Oct-2001 - Nov-2016

Category > Computer Science Posted 21 Jul 2017 My Price 4.00

Rotation speed

Assume that a hard disk has the following characteristics:

Rotation speed = 7,200 rev/min

Arm movement time = 0.5 msec fixed startup time

+ 0.05 msec for each track crossed. (The startup time is a constant no matter how far the arm moves.) Number of surfaces = 2 (This is a double-sided disk. A single read/write arm holds both read/ write heads.)

Number of tracks per surface = 500

Number of sectors per track = 20

Number of characters per sector = 1,024

a. How many characters can be stored on this disk?

b. What are the best-case, worst-case, and average-case access times for this disk?

Answers

Maurice Tutor
(5)
Status NEW Posted 21 Jul 2017 07:07 AM My Price 4.00

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