1. Storage devices and media
By Mr.Chelvam

2. Objective of the Lesson
 Important of Storage devices
 Backing up data
 Types of access
 Three Main Backing Up storage media

3. What is Storage?
 The retention of retrievable data on a
computer or other electronic system;
memory.
 Definition from web......

4. Why we store/back up data in the computer?
 To avoid lost of data
 Data could be lost due to failure of the
original storage device
 To save guard our original data.

5. Type of Access
 The way getting the information back
(Retrieve).
 Serial Access – Updating, Merged
Example: Magnetic( Old School)
 Direct Access- Real Time Process
Example Movie from DVD

6. Media of Backup (Storage)
 Magnetic
 Optical
 Solid State

7. Magnetic
 Hard disk (HDD)
- DOS, Fixed
 Portable Hard disk
- USB
 Floppy disk drives
 Magnetic tape

8. Optical Storage Media
 CD/DVD ROM
- Bits Binary Code
 What is mean
DVD-R & DVD RW or CD-r & CD RW
 What is Blue Ray disks ?

9. Solid
 Pendrive/ thumbdrive & Etc
 Flash Memory Card
Can you name the type of flash card found in
the market?

10. Thank YOU