Magnetic Flashcards

1
Q

How does Magnetic Storage work

A

The value of each bit of data (0 or 1) is represented as a positively or negatively charged magnetic particle.
These particles are part of a magnetic disk called the platter.

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2
Q

How does magnetic storage store data

A

Data could be stored anywhere on the disk, and so to read/write data we first need to find the location on the disk.
A magnetic read/write head is used to access the data while the platter spins.

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3
Q

What is the reliability of magnetic storage

A

The HDD has moving parts.
Although the HDD is generally reliable, any device with moving parts will be subject to wear-and-tear.
HDDs can also be damaged by shocks. They are not robust.

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4
Q

Properties of Magnetic Storage

A

High capacity
Low speed
Low cost
Good reliability

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5
Q

Examples of magnetic storage

A

Hybrid drives - mix between magnetic and SSD
HDD
Magnetic Tape

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