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4-1 Copyright Prentice-Hall, Inc. 1998 Disks & Tape Backup Units CHAPTER4.

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Presentation on theme: "4-1 Copyright Prentice-Hall, Inc. 1998 Disks & Tape Backup Units CHAPTER4."— Presentation transcript:

1 4-1 Copyright Prentice-Hall, Inc. 1998 Disks & Tape Backup Units CHAPTER4

2 4-2 Copyright Prentice-Hall, Inc. 1998 Fundamental Components

3 4-3 Copyright Prentice-Hall, Inc. 1998 Secondary Storage & Files Disks Disks  Magnetic Disk Drives  Optical Laser Disk Tape Tape  Magnetic Tape Drives Disks Disks  Magnetic Disk Drives  Optical Laser Disk Tape Tape  Magnetic Tape Drives

4 4-4 Copyright Prentice-Hall, Inc. 1998 Storage Capacities

5 4-5 Copyright Prentice-Hall, Inc. 1998 Storage Costs

6 4-6 Copyright Prentice-Hall, Inc. 1998 Types of Files ASCII File ASCII File Data File Data File Document File Document File Spreadsheet File Spreadsheet File Source Program File Source Program File ASCII File ASCII File Data File Data File Document File Document File Spreadsheet File Spreadsheet File Source Program File Source Program File

7 4-7 Copyright Prentice-Hall, Inc. 1998 Spreadsheets (Excel)

8 4-8 Copyright Prentice-Hall, Inc. 1998 Types of Files Executable Program File Executable Program File Graphics File Graphics File Audio File Audio File Video File Video File Executable Program File Executable Program File Graphics File Graphics File Audio File Audio File Video File Video File

9 4-9 Copyright Prentice-Hall, Inc. 1998 Information Kiosk

10 4-10 Copyright Prentice-Hall, Inc. 1998 What To Do With a File? Create, Name & Save Create, Name & Save Copy, Move & Delete Copy, Move & Delete Retrieve & Update Retrieve & Update Display, Print & Play Display, Print & Play Create, Name & Save Create, Name & Save Copy, Move & Delete Copy, Move & Delete Retrieve & Update Retrieve & Update Display, Print & Play Display, Print & Play

11 4-11 Copyright Prentice-Hall, Inc. 1998 What To Do With a File? Execute Execute Download & Upload Download & Upload Export & Import Export & Import Compress Compress Protect Protect Execute Execute Download & Upload Download & Upload Export & Import Export & Import Compress Compress Protect Protect

12 4-12 Copyright Prentice-Hall, Inc. 1998 Backup Procedures

13 4-13 Copyright Prentice-Hall, Inc. 1998 Backup Procedures con’t

14 4-14 Copyright Prentice-Hall, Inc. 1998 File Accessibility Sequential Processing Sequential Processing  Magnetic Tapes Random Processing Random Processing  Compact Discs Sequential Processing Sequential Processing  Magnetic Tapes Random Processing Random Processing  Compact Discs

15 4-15 Copyright Prentice-Hall, Inc. 1998 Magnetic Disks Interchangeable Magnetic Disks Interchangeable Magnetic Disks Fixed Magnetic Disks Fixed Magnetic Disks Interchangeable Magnetic Disks Interchangeable Magnetic Disks Fixed Magnetic Disks Fixed Magnetic Disks

16 4-16 Copyright Prentice-Hall, Inc. 1998 Microcomputer Environment 5 1/4 & 3 1/2 Floppy Disks 5 1/4 & 3 1/2 Floppy Disks Floptical Disk Drive Floptical Disk Drive The Hard Disk The Hard Disk Interchangeable Hard Disks (Jaz Drive) Interchangeable Hard Disks (Jaz Drive) 5 1/4 & 3 1/2 Floppy Disks 5 1/4 & 3 1/2 Floppy Disks Floptical Disk Drive Floptical Disk Drive The Hard Disk The Hard Disk Interchangeable Hard Disks (Jaz Drive) Interchangeable Hard Disks (Jaz Drive)

17 4-17 Copyright Prentice-Hall, Inc. 1998 Hard Disk Array

18 4-18 Copyright Prentice-Hall, Inc. 1998 Removable Media (ZIP and JAZ Drives)

19 4-19 Copyright Prentice-Hall, Inc. 1998 Disk Organization Tracks & Sectors Tracks & Sectors  Disk Address Cylinders Cylinders Formatting Formatting Disk Access Time Disk Access Time Disk Caching Disk Caching Tracks & Sectors Tracks & Sectors  Disk Address Cylinders Cylinders Formatting Formatting Disk Access Time Disk Access Time Disk Caching Disk Caching

20 4-20 Copyright Prentice-Hall, Inc. 1998 Disk Components

21 4-21 Copyright Prentice-Hall, Inc. 1998 Hard Disk Components

22 4-22 Copyright Prentice-Hall, Inc. 1998 Computer Viruses

23 4-23 Copyright Prentice-Hall, Inc. 1998 Virus Infections

24 4-24 Copyright Prentice-Hall, Inc. 1998 Anti-viral Software

25 4-25 Copyright Prentice-Hall, Inc. 1998 Magnetic Tape Magnetic Tape Cartridges

26 4-26 Copyright Prentice-Hall, Inc. 1998 Magnetic Tape

27 4-27 Copyright Prentice-Hall, Inc. 1998 Optical Laser Disks CD-ROM CD-ROM DVD DVD CD-R CD-R WORM Disks WORM Disks Rewritable Optical Disks Rewritable Optical Disks CD-ROM CD-ROM DVD DVD CD-R CD-R WORM Disks WORM Disks Rewritable Optical Disks Rewritable Optical Disks

28 4-28 Copyright Prentice-Hall, Inc. 1998 CD-ROM Concepts

29 4-29 Copyright Prentice-Hall, Inc. 1998 WORM CD Drive

30 4-30 Copyright Prentice-Hall, Inc. 1998 Summary Discussion

31 4-31 Copyright Prentice-Hall, Inc. 1998 High Storage Applications

32 4-32 Copyright Prentice-Hall, Inc. 1998 Coming Soon Input/Output: Computers in Action Chapter 5

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