3. Click for:
Back to Backing
Storage and
Media Devices
4. Advantages Disadvantages
Cheaper than using disks Slow access
Robust + encased in a In order to update, a new
cartridge tape needs to be created.
Easier to remove + keep
away from the computer
Data transfer is fast
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Storage and
Media Devices
5. Advantages Disadvantages
Data transfer rate is fast Easily damaged.
Data access time is fast
Have a large capacity Back to Backing
Storage and
Media Devices
6. Advantages Disadvantages
Data access time is fast Dropping could damage them
Data transfer rate is fast Transfer rate is not as fast as the
transfer rate for Fixed hard Disk
drives.
Large capacity More expensive
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Storage and
Media Devices
7. Optical backing storage media:
Advantages Disadvantages
DVD has a greater capacity then a Data transfer rates are slower than a hard
CD disks’
CDs are cheaper to buy Data access times are longer than a hard
disks'
Both hold more data than a
floppy disk.
Both are cheaper and more Back to Backing
robust than hard disks Storage and
Media Devices
8. Optical backing storage media:
Advantages Disadvantages
Cheaper than CD/DVD Can only be recorded on
RW s once.
Once they are used; Not all CD players
there is no chance that recognize CD R s
by accident something
will rewrite over it.
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Storage and
Media Devices
9. Optical backing storage media:
Advantages Disadvantages
Can be used more than once. Cost makes them impractical for
use.
Different versions of the files can Files can be over written by
be written. accident
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Storage and
Media Devices
10. Optical backing storage media:
Advantages Disadvantages
Greater capacity than CD and DVDs Not compatible with most DVD players
More durable than DVDs More expensive than other types of
DVD media.
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Storage and
Media Devices
11. Optical backing storage media:
Advantages Disadvantages
Store more than other Very expensive
optical media
Data transfers are high Problems with encrypting.
Access speeds are higher
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with blu-ray players Storage and
Media Devices
12. Optical backing storage media:
Advantages Disadvantages
Can be recorded over more times Slower transfer rates
than any other media.
More robust than other optical Hold less data than other music
materials. players
More expensive than portable Back to Backing
players. Storage and
Media Devices
13. Solid state backing storage:
Advantages Disadvantages
More compact More expensive per GB.
More robust Cannot be protected.
Do not need software drivers to
operate
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Storage and
Media Devices
14. Optical backing storage media:
Advantages Disadvantages
More compact More expensive per GB
Can only be used for a
particular number of options
Lower storage capacity then
hard disks.
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Storage and
Media Devices
Editor's Notes
Optical devices operate using a laser beam. The laser reads from and writes to the disk. This disk is made up of polycarbonate plastic coated with a thin layer of reflective material. The reflective material is then etched into by the laser; this causes microscopic pits to form on the surface.
Solid state backing storage is a silicon chip which consists of a grid of columns and rows of cells. Each cell comprises of 2 transistors separated by a thin oxide layer. They have no moving parts
