Computer Systems: A Programmer's Perspective (3rd Edition)
Computer Systems: A Programmer's Perspective (3rd Edition)
3rd Edition
ISBN: 9780134092669
Author: Bryant, Randal E. Bryant, David R. O'Hallaron, David R., Randal E.; O'Hallaron, Bryant/O'hallaron
Publisher: PEARSON
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Chapter 6, Problem 6.23HW
Program Plan Intro

Given Information:

A sector in a disk has the following parameters:

ParameterValue
Rotational Value15000 RPM
Tavg seek4 ms
Average numbers of sectors or tracks800

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Calculate how much disk space (in whole sectors and tracks) will be required to store 1GB (230 bytes) of data if a disk is single-zoned with 512 bytes/sector and 1024 sectors/track. Ignore any file header record(s) and track indices.
Estimate the average time (in ms) to access a sector on thefollowing disk:                     Parameter                           Value                    Rotational rate                   15,000 RPM                           Tabg seek                       8 ms    Average number of sectors/track          500
A certain moving arm disk storage, with one head, has the following specifications. Number of tracks/recording surface = 200 Disk rotation speed = 2400 rpm Track storage capacity = 62,500 bits The average latency of this device is P msec and the data transfer rate is Q bits/sec. Write the value of P and Q.
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