Chapter 3 - Storage

Let’s Review

1. What is the difference between a fixed hard drive and a

portable hard drive?

2. What does the term non-volatile storage mean?

3. Put the following types of storage media in order from smallest

capacity to largest capacity:
solid state hard drive, xD card, magnetic tape, compact disc,
micro SD card, Blu-ray disc.

Chapter 3 : Storage Devices and Media

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At the end of this chapter, you will be able to
understand

• The different type of storage devices and how they work, including

magnetic, optical and solid state storage devices.

• The characteristics of magnetic storage devices and media, such as

hard disk drives and tape drives.

• The characteristics of optical storage devices and media, such as

compact discs, digital versatile discs and Blu-ray discs.

• The characteristics of solid state storage devices and media, such as

solid state hard disks, flash storage, pen drives and memory cards.

• The advantages and disadvantages of using different storage devices

and media.

Chapter 3 : Storage Devices and Media

Word Cloud

What file storage that you have ?

Storage Devices

Chapter 3 : Storage Devices and Media

▪ Hard Drives

• This is where all the software, applications, files and documents are

stored so the computer can operate properly.

• Types:

• Magnetic Hard Drive

• The hard drive consists of a stack of round metal plates, known as

platters.

• Data is stored within this magnetic material and the platters rotate

very quickly on a spindle. An electromagnetic read/write head, which
looks a little bit like a needle, can access, add and remove data from
the platters.

• Solid State Hard Drive (SSD)

• requires power and is connected to a second cable directly to the

computer’s power supply.

Multiple Choice

HDD is slower than SSD

• True

• False

• same speed

• depend on power supply

Storage Devices

Chapter 3 : Storage Devices and Media

▪ Pen Drives and Flash Drives

• A flash drive is a collective term for any drive that uses

flash technology to store data.

• A pen drive, sometimes known as a thumb drive, is a

type of flash drive that is designed to insert directly into
a USB port on a computer.

▪ Magnetic Tape Drives

• Magnetic tape drives are used for this process because

they are a relatively cheap way of backing-up data.

• The drives store the backup data uncompressed, which

means that the tapes contain exact replicas of the drive
that has been copied.

Reorder

Reorder the following from the fastest storage to the slowest

• SSD

• HDD

• Flash Disk

• Magnetic Tape Drive

1

2

3

4

• 1
• 2
• 3
• 4

Storage Devices

Chapter 3 : Storage Devices and Media

▪ Optical Drives

• Optical disc drives are so called because they use

laser light and the light spectrum to read or write
the data.

• Types:

▪ Compact Disc (CD) Drives
▪ Digital Versatile Disc (DVD) Drives
▪ Blu-Ray Disc (BD) drives

Storage Devices

Chapter 3 : Storage Devices and Media

Storage Media

Chapter 3 : Storage Devices and Media

Storage Media

Chapter 3 : Storage Devices and Media

▪ Magnetic Hard Disks

• The capacity of a magnetic hard disk is entirely

dependent upon its main functionality, however
magnetic storage is the cheapest type of storage
available.

▪ Magnetic Tapes

• Magnetic tape cartridges are required when

using a magnetic tape drive.

• This technology is similar to old-style video

machines used to record television programmes
before set top boxes were available.

Storage Media

Chapter 3 : Storage Devices and Media

▪ Optical Discs

▪ Compact Discs (CD)

• CDs were adapted for use with computers and

were known as CD-ROM discs, or read-only.

• A CD is 120 millimetres in diameter and is

capable of storing up to 700 megabytes of data,
or 80 minutes of audio.

• CDs were only written to on one side of the

disc, despite mainly unsuccessful attempts to
design double-sided variants.

Storage Media

Chapter 3 : Storage Devices and Media

▪ Optical Discs

▪ Digital Versatile Discs (DVD)

• The DVD was developed in the late 1990s

and first became popular for watching high-
definition films

• At 120 millimetres in diameter a DVD is the

same size as a CD, but is capable of storing
much more data.

• A basic DVD can store 4.7 gigabytes of data

– the equivalent of a high-definition film.

Storage Media

Chapter 3 : Storage Devices and Media

▪ Optical Discs

▪ Blu-Ray Discs (BD)

• The first BDs became available in the early

part of the 21st century as demand grew for
video to be stored in high definition as
standard.

• BDs can store up to 25 gigabytes of data in

their most basic form.

• Newer BD discs are capable of holding four

layers of data, meaning that one disc can
store up to 128 gigabytes of data.

Reorder

Reorder from the biggest optical storage to the slowest

• Blu-ray

• DVD dual layer

• DVD

• CD

• mini-CD

1

2

3

4

5

• 1
• 2
• 3
• 4
• 5

Storage Media

Chapter 3 : Storage Devices and Media

▪ Solid State Media

▪ Secure Digital Cards (SD Cards)

• SD cards are most often found inside mobile

smartphones, tablets and digital cameras.

• SD cards are usually used for the storage of

media such as photographs, video, and
music.

• Standard SD cards tend to have a maximum

capacity of 32 gigabytes.

Multiple Select

choose modern smartphone storage type

• EMMC

• UFS

• micro SD card

• nvme SSD

Storage Media

Chapter 3 : Storage Devices and Media

▪ Solid State Media

▪ eXtreme Digital Card (xD Card)

• xD cards are a type of solid state storage

designed primarily for use in digital cameras
from one manufacturer.

• xD cards are only available with capacity up

to 2 gigabytes and this places a restriction
on the abilities of digital cameras to produce
higher definition photography.

Storage Media

Chapter 3 : Storage Devices and Media

▪ Solid State Media

▪ CompactFlash (CFast) Cards

• CFast cards are found in gaming devices

where fast data access is essential to the
smooth running of games and are
increasingly

built

into

high-definition

digital camera recorders due to their fast
transfer speeds.

• CFast cards can store up to 512 gigabytes

of data.

Storage Media

Chapter 3 : Storage Devices and Media

Chapter 3 : Storage Devices and Media

Let’s Review

1. What is the difference between a fixed hard drive and a

portable hard drive?

2. What does the term non-volatile storage mean?

3. Put the following types of storage media in order from smallest

capacity to largest capacity:
solid state hard drive, xD card, magnetic tape, compact disc,
micro SD card, Blu-ray disc.

Chapter 3 : Storage Devices and Media

Labeling

Label this storage name

Drag labels to their correct position on the image

Flash Disk

CD

Micro SD

SSD

External HDD

SD Card