Storage Devices And Media
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Transcript of Storage Devices And Media
booM ICT
STORAGE DEVICES AND MEDIA
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Fixed hard discs Used to store
operating system Fast- Access Program Not for portability
application
used for online, real time direct accessUsed in file servers for computer networks
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Portable hard discs Used to store very
large files which need transporting
expensive than other forms of removable media (Price)
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Magnetic tapes Requires large storagecapacity Speed is not
necessary Used serial Used for backups of
file server, computer networks
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CDs and DVDs
CD- Can be used to store computer data
-Portable
- Store for large files (smaller than 1Gb)
DVD- Can be used to store
computer data
- Portable- Store file larger than
CD
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Click icon to add picture
Applications which require the prevention of deletion of data even if you accidently delete it.
CD ROM/DVD ROM
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CD R/DVD R
Applications which require a single ‘burning’ of data…-Recording music (MP3) and movies in DVD R. -> An example of CD-R-This one can store 700MB
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CD RW/DVD RW
Can record over old data, update of data
Not suitable of music Suitable for keeping
data files
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DVD RAM
Aspect Rati
(Should appear circular)
DVD RAM comes in different size of storage
2.6, 4.7,5.2 9.4GB
Therefore, DVD RAM can be written over old data
Can be written over more than 100000 times.
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HD DVD
This type of DVD is used
in video recorders
Used in game
console
HD is short for
High Definition
DVD
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Blu-Ray (BR)
• This type is the largest storage capacity of optical disc.
•Used in game console, video recorders and computer memory
Comparing DVDs and Blu-ray disc
High definition
Require Blu-ray reader
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Solid state backing storage
Ex.
Smallest type of memory
Removable storage
•Ex.This type is more expensive but is easy to update data
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Memory sticks/Pen drives• Can be use to
transport data between computers
This type of storage can be stored up to many GB
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Flash memory cards
Used in digital cameras, palmtops, mobile phones, MP3 playersHigh re-record-ability and power-free storage