Storing And Retrieving Information Hard/Fixed Disks Permanently installed and cannot be removed - Data stored on all recording surfaces. - Allows greater.

Slides:

Advertisements

Similar presentations

Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved. McGraw-Hill Technology Education Copyright © 2006 by The McGraw-Hill Companies,

Advertisements

Lesson 9 Types of Storage Devices.

Describing Storage Devices Store data when computer is off Two processes –Writing data –Reading data Storage terms –Media is the material storing data.

Types Of Storage Device

Professor Michael J. Losacco CIS 1110 – Using Computers Storage Chapter 6.

Disk Fundamentals. More than one platter (round cylinders)

Section 5a Types of Storage Devices.

Secondary Storage Chapter 8 McGraw-Hill/Irwin

1 Chapter 6 Storage and Multimedia: The Facts and More.

McGraw-Hill/Irwin Copyright © 2008 by The McGraw-Hill Companies, Inc. All rights reserved. Chapter 8 Secondary Storage.

Secondary Storage Chapter Distinguish between primary and secondary storage Compare internal and external hard disks Describe ways to improve hard-disk.

Backing Storage Chapter 18.

Introduction to Computers Section 5A. home Storage Involves Two Processes Writing data Reading data.

Computers: Information Technology in Perspective By Long and Long Copyright 2002 Prentice Hall, Inc. Storing & Retrieving Information File systems J.

Storage and Multimedia: The Facts and More Chapter 6.

Storage device.

Chapter 8 Secondary Storage.

Secondary Storage Devices W. Overton. Hard Drive Information: Data is stored by magnetising the surface of flat, circular plates called platters. These.

Edited By :Asma AlOsaimi

Distinguish between primary and secondary storage.

ASHIMA KALRA.  Hard disks.Hard disks.  Floppy disks.Floppy disks.  CD ROMs.CD ROMs.  DVDs.DVDs.

Presented by: Manjeet Singh. Secondary Storage Devices Magnetic media Tape Disks Optical Media Compact Discs CD-R, WORM (Write Once, Read Many) CD-RW.

McGraw-Hill/Irwin Copyright © 2008 by The McGraw-Hill Companies, Inc. All rights reserved. Chapter 7 Secondary Storage.

Storage *Several of these slides have been adapted and modified from LUMS CS101 course (Dr Sohaib Khan and Dr Arif Zaman), VU CS101 slides (Dr. Altaf A.

CIS 105 Concepts and Terminology Unit 3 CIS 105 Survey of Computer Information Systems Essential Concepts and Terminology Study Unit Three.

Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved. McGraw-Hill Technology Education Copyright © 2006 by The McGraw-Hill Companies,

Teaching and Learning with Technology  Allyn and Bacon 2005 Teaching and Learning with Technology  Allyn and Bacon 2002 Teaching and Learning with Technology.

Backing Storage. Backing storage devices allow us to store programs and data so that we can use them later Backing storage devices can be split into 4.

1 Storing And Retrieving Information 2 Mass Storage and Files Programs and information (text, image, audio, video) are stored: –Magnetic Magnetic Tape.

1 Chapter 3 Understanding Computers, 11 th Edition Storage Medium The physical material on which a computer keeps data, instructions and information. Can.

Chapter 4: Business Hardware Oz (5 th edition). Storage Media Data an programs must be stored on nonvolatile medium –Data is retained even when not powered.

Secondary Storage Chapter 7.

Storing Data On Your Computer Chapter 12, Exploring the Digital Domain.

INFO1 – Practical problem solving in the digital world

Computers: Information Technology in Perspective By Long and Long Copyright 2002 Prentice Hall, Inc. Computers: Information Technology in Perspective.

Computer Organisation 1 Secondary Storage Sébastien Piccand

Computers in the real world Objectives Explain the need for secondary storage devices Understand the three main storage types – Optical – Magnetic – Solid.

Objectives Overview Differentiate between storage and memory

Your Interactive Guide to the Digital World Discovering Computers 2012.

Secondary Storage Chapter 8 Copyright © 2011 by The McGraw-Hill Companies, Inc. All rights reserved. 8-1.

Lecture No 11 Storage Devices

PC Maintenance: Preparing for A+ Certification Chapter 10: Introduction to Disk Storage.

1 3 Computing System Fundamentals 3.2 Computer Architecture.

Copyright Prentice-Hall, Inc Storing & Retrieving Information Chapter 7.

Chapter Two Input and Storage Devices Part II: Storage Devices.

The disk surface is divided into tracks. into tracks. 1.

SECONDARY STORAGE DEVICES. Agenda of Today’s Lecture  Introduction to Hardware  Types of hardware devices  Storage Devices  Secondary Storage devices.

Storage Devices Magnetic Storage Optical Storage Digital Storage.

Memory and Storage Computer Technology K. Steere.

Secondary Storage Chapter 8 McGraw-HillCopyright © 2011 by The McGraw-Hill Companies, Inc. All rights reserved.

Chapter 7 Storage. What is storage? Holds data, instructions, and information for future use Storage medium is physical material used for storage Also.

STORAGE DEVICES Introduction Comparision Storage Hierarchy Slide 1.

Storage Devices.

Your Interactive Guide to the Digital World Discovering Computers 2012 Edited By :Asma AlOsaimi.

Storage devices 1. Storage Storage device : stores data and programs permanently its retained after the power is turned off. The most common type of storage.

Disk storage systems Question#1 (True/False) A track is divided into multiple units called sectors.

STORAGE DEVICES Storage devices are categorized by the method they use to store files.

Senior 3 Computer Studies

Copyright © 2003 Prentice Hall, Inc 1 Chapter 4 Storing Data: Electronic Filing Cabinets NEXT SLIDE.

Copyright Prentice Hall, Inc. 1 Computers: Information Technology in Perspective, 11e Larry Long and Nancy Long Chapter 5 Storing and Retrieving Information.

Computers Are Your Future Twelfth Edition

McGraw-Hill Technology Education

McGraw-Hill Technology Education

Secondary Storage Devices

Computers: Tools for an Information Age

Computer Hardware Ms. Wade.

Lesson 9 Types of Storage Devices.

McGraw-Hill Technology Education

Storage and Multimedia

Presentation transcript:

Storing And Retrieving Information

Hard/Fixed Disks Permanently installed and cannot be removed - Data stored on all recording surfaces. - Allows greater density than interchangeable diskettes Interchangeable Disks Can be stored offline and loaded to the magnetic disk drives as they are needed -Interchangeable Hard Disks -USB / Micro SD CardsUSB / Micro SD Cards

 Anatomy:  Recording surface  Multiple platters  Read/write head  Access arms Courtesy of Seagate Technology How A Hard Drive Works

Tracks & Sectors & Clusters OH MY

Low-Level Formatting - Creates sectors and tracks on disk into which data are stored. High Level Formatting - Sets up VFAT, Master Boot Record is created, copies hidden operating system files to the volume, and prompts you for a label i.e. MY Computer.

 ScanDisk for lost clusters  lost clusters are the result of an unexpected interruption of file activity, perhaps a system crash or loss of power.  The ScanDisk utility program periodically to “scan” the disk for lost clusters and, if any are found, let you return them to the available pool of usable clusters.

 Defragging  Reorganizing your files in continuous clusters.

File1 st Cluster Expenses.xls1 Annual Rep.doc2 AVAILABLE3 NewBudget.md b 4 ClusterTrackSector s 312,3,4,5 Magnetic Disk Organization Virtual File Allocation Table

1. The operating system searches the VFAT to find the physical address of the first cluster of the file. 2. The read/write heads are moved over the track/cylinder containing the first cluster. 3. The rapidly rotating disk passes the cluster under/over the read/write head and the information in the first cluster is read and transmitted to RAM for processing. 4. The operating system checks an entry within the initial cluster that indicates whether the file consists of further clusters, and if so, where on the disk they are located. 5. The operating system directs that clusters continue to be read and their information transmitted to RAM until the last cluster in the chain is read (no further chaining is indicated).

 CD-R  Compact disk-recordable  CD-RW  Compact disk-rewritable DVD-R Digital video disk recordable DVD-RW Digital video disk recordable Blu-Ray Explained

Spiraling Track Detector Pit Land Sector Less sensitive to environment Cheaper than magnetic disks Large data capacity Spins at Constant Linear Velocity

 No moving parts  More resistant to shock and vibration  Less Power Usage  Faster Data Access  Higher Reliability Solid State Drives Explained

 USB 2.0 USB 2.0  USB Portable Hard Drives and Gadgets USB Portable Hard Drives and Gadgets  USB 3.0 USB 3.0  Using WinSCP (Windows) Using WinSCP (Windows)  Using Fugu (Mac) Using Fugu (Mac) Backup methods: Full Selective Modified files only Backup methods: Full Selective Modified files only