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1.2 - Storage Media

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Overview
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Learning Objectives
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 1.2 I can explain about the different types of information storage media
 1.2 I can explain the purpose characteristics and advantages/disadvantages of paper (e.g. forms, handwritten notes, maps,telephone directories)
 1.2 I can explain the purpose characteristics and advantages/disadvantages of optical media (e.g. CD and DVD)
 1.2 I can explain the purpose characteristics and advantages/disadvantages of magnetic media (e.g. magnetic hard drives andtapes)
 1.2 I can explain the purpose characteristics and advantages/disadvantages of solid state media (e.g. SSD hard drives, memory cards)

🏁 Learning Objective 5 :- I can explain about the different types of information storage media

Secondary storage

Secondary storage (often also called auxiliary storage) is anything that stores data other than the temporary storage in things like RAM. In a personal computer, secondary storage usually consists of a hard disk and removable media.

Part A

Part B

Part C

Part D

External storage is also secondary storage. External secondary storage devices are used to:

  • back up data
  • add more storage space for files, photographs, videos, and so on
  • transfer files between computers
  • easily transport files without taking your computing device with you
  • share files over a network.

Different types of non-volatile secondary storage include the following:

  • magnetic storage
  • optical storage:
    • compact disk (CD)
    • digital versatile disk (DVD)
    • Blu-ray disk (BD)
  • solid-state disk
  • USB drive (memory stick or pen drive)
  • flash memory card.

Exam Question

  1. In your own words explain the purpose of secondary storage and why it is necessary in a computer system.
  2. Computers in the 1990’s had a hard disc capacity of 4-8Mb. This was sufficient to store all the programs and data. In today’s market, on a typical home computer, what is the average capacity available for:
    • HDD
    • SSD
    • Portable HDD
Write the answer in your revision powerpoint!


🏁 Learning Objective 6 :- I can explain the purpose characteristics and advantages/disadvantages of paper (e.g. forms, handwritten notes, maps,telephone directories)

Paper Storage


Exam Question

  1. Explain the advantages and disadvantages of using paper as a storage medium for information.
Write the answer in your revision powerpoint!


🏁 Learning Objective 7 :- I can explain the purpose characteristics and advantages/disadvantages of optical media (e.g. CD and DVD)

Optical Media


Book Question

  1. Give three advantages and two disadvantages of optical storage devices (OSD).
Write the answer in your revision powerpoint!


🏁 Learning Objective 8 :- I can explain the purpose characteristics and advantages/disadvantages of magnetic media (e.g. magnetic hard drives andtapes)

Magnetic Media


Book Question

  1. Describe three of the above secondary storage types and how they are used.
  2. List which of the devices above are internal and which are external secondary storage?
  3. Give three advantages and disadvantages of magnetic storage devices (MSD).
Write the answer in your revision powerpoint!


🏁 Learning Objective 9 :- I can explain the purpose characteristics and advantages/disadvantages of solid state media (e.g. SSD hard drives, memory cards)

Solid State Devices


Book Question

  1. Give three advantages and disadvantages of Solid State devices (OSD).
Write the answer in your revision powerpoint!

Extension question:

  1. Explain using a table for each type of storage media to what degree each has the following characteristics:
    • Mutability
    • Robustness
    • Speed of access
    • Cost
    • Storage capacity


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Teacher Date: 2019-09-19


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