Magnetic Flashcards
How does Magnetic Storage work
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.
How does magnetic storage store data
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.
What is the reliability of magnetic storage
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.
Properties of Magnetic Storage
High capacity
Low speed
Low cost
Good reliability
Examples of magnetic storage
Hybrid drives - mix between magnetic and SSD
HDD
Magnetic Tape