Types of Storage Device

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Magnetic Storage
HD drive
­ Advantageous because it is easy to access the data. Also, you can use windows explorer
to organise the data on the hard drive how you want it. Portable hard-drives are also
small and today you can get a large one for a relatively small price.
­ Disadvantageous because they can break more easily than other methods of storage.
Finally HDDs are the most unreliable type of storage as they have the most moving
parts. If any dust gets on the disc then data may not be retrievable.
Magnetic Tape
­ Advantageous because it allows for long term storage,. Lasting for many years. With
the necessary equipment it can encrypt all the data easily and quickly. Magnetic tape
can store more data than most other storage methods. Magnetic tape is cheap to buy
being nearly half the price of portable hard drives. Finally it is very tough and reliable
due to there being no moving parts except for the tape and a tough container meaning
it is unlikely that anything will get damaged.
­ Disadvantageous because when data is backed-up on magnetic tape, it back the
information up in order along the tape, so if you want to retrieve a particular file you
have to reel through the point in the tape where the data is, with HDD this doesn't
occur, because the reader needle can access any point on the disc without having to
rotate the disc or wait. A final disadvantage of magnetic tape is that you have to have
special readers encrypting peripheral hardware to be able to put data onto and take
data off of magnetic tape.
Optical Storage
­ Advantageous because it can store data reliably and takes up nearly no space being
very flat. Secondly discs are sturdy and do not break easily. There are many different
types of optical storage devices available from CDs, to DVDs, and CDRs, and CD-RWs
and CD-ROMs, this allows for very organized file storage.
­ Disadvantageous because it can't hold much data, (under a gigabyte) whereas most
other storage devices can hold tens of, or hundreds of gigabytes. Another disadvantage
is that discs, despite being hard to break, have a very delicate under side, that if
damaged, (scratched, smudged, dirty) could mean that the disc can no longer be read,
this regularly happens with mistreated video games.
Solid State Storage
­ Advantageous because it is very small and can hold quite a lot of data for it's size.
Secondly there are no moving parts so it is very reliable and can last a long time if
looked after. A third advantage is that Solid State storage uses universal serial; busses
to connect to computers, which are universal and are very quite, being able to connect
and install in seconds.
­ Disadvantageous because they are easy to leave behind and lose everything. Also ones
which hold a lot of data cost lots of money, (a 256GB USB stick would cost over £100,
but a HDD drive with 1TB can cost as little as £100 today). Vulnerable to external
conditions, such as heat or humidity, also they are prone to power loss.

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