Assume the following specification for a hard disk drive   Rotation Speed:             7,200 rev/min Arm movement Time:    0.5 msec fixed startup + 0.05 msec for each track crossed. (Startup is constant no matter how far the arm moves.)                               Surfaces:                         2 (The disk has two sides and a single arm holds both of the read/write heads) Average Moves:             On average the read/write head moves only 30 tracks Tracks per Surface:       500 Sectors per Track:          20 Characters per Sector:  1024   a) How many characters can be stored on this disk? b) Create a best-case, worst-case, average-case access time table that shows each of seek, latency, transfer and average access times.

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
icon
Related questions
Question
  1. Assume the following specification for a hard disk drive

 

Rotation Speed:             7,200 rev/min

Arm movement Time:    0.5 msec fixed startup + 0.05 msec for each track crossed. (Startup is constant no matter how far the arm moves.)                              

Surfaces:                         2 (The disk has two sides and a single arm holds both of the read/write heads)

Average Moves:             On average the read/write head moves only 30 tracks

Tracks per Surface:       500

Sectors per Track:          20

Characters per Sector:  1024

 

  1. a) How many characters can be stored on this disk?
  2. b) Create a best-case, worst-case, average-case access time table that shows each of seek, latency, transfer and average access times.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps

Blurred answer
Knowledge Booster
Fundamentals of Input and Output Performance
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.
Similar questions
Recommended textbooks for you
Database System Concepts
Database System Concepts
Computer Science
ISBN:
9780078022159
Author:
Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:
McGraw-Hill Education
Starting Out with Python (4th Edition)
Starting Out with Python (4th Edition)
Computer Science
ISBN:
9780134444321
Author:
Tony Gaddis
Publisher:
PEARSON
Digital Fundamentals (11th Edition)
Digital Fundamentals (11th Edition)
Computer Science
ISBN:
9780132737968
Author:
Thomas L. Floyd
Publisher:
PEARSON
C How to Program (8th Edition)
C How to Program (8th Edition)
Computer Science
ISBN:
9780133976892
Author:
Paul J. Deitel, Harvey Deitel
Publisher:
PEARSON
Database Systems: Design, Implementation, & Manag…
Database Systems: Design, Implementation, & Manag…
Computer Science
ISBN:
9781337627900
Author:
Carlos Coronel, Steven Morris
Publisher:
Cengage Learning
Programmable Logic Controllers
Programmable Logic Controllers
Computer Science
ISBN:
9780073373843
Author:
Frank D. Petruzella
Publisher:
McGraw-Hill Education