Storage devices and media

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Storage devices and media

  1. 1. Storage devices and mediaBy Mr.Chelvam
  2. 2. Objective of the Lesson Important of Storage devices Backing up data Types of access Three Main Backing Up storage media
  3. 3. What is Storage? The retention of retrievable data on a computer or other electronic system; memory. Definition from web......
  4. 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. 5. Type of Access The way getting the information back (Retrieve). Serial Access – Updating, MergedExample: Magnetic( Old School) Direct Access- Real Time ProcessExample Movie from DVD
  6. 6. Media of Backup (Storage) Magnetic Optical Solid State
  7. 7. Magnetic Hard disk (HDD)- DOS, Fixed Portable Hard disk- USB Floppy disk drives Magnetic tape
  8. 8. Optical Storage Media CD/DVD ROM- Bits Binary Code What is meanDVD-R & DVD RW or CD-r & CD RW What is Blue Ray disks ?
  9. 9. Solid Pendrive/ thumbdrive & Etc Flash Memory CardCan you name the type of flash card found inthe market?
  10. 10. Thank YOU

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