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Secondary Storage Types - Coggle Diagram
Secondary Storage Types
Optical
Types of Optical Storage
DVDs
CDs
Lowest Capacity
Blu-Ray
Highest Capacity
Data stored as pits and lands
Burnt onto a spiral track, read by a laser
Turned into binary code (0s and 1s) from if the laser is deflected into a sensor or not
Advantages
Cheap per GB
Very easily portable
Disadvantages
Lowest storage capacity
Easily damaged/scratched
Slower Write Speeds
Magnetic
Types of Magnetic Storage
Mechanical Head moves over the disk's surface to read/write data mechanically
Advantages
Low Cost per GB
Large Storage
Reasonably fast write speed
Disadvantages
Lots of moving mechanical parts
As a result, it is not durable
Not very robust
Cloud
Data stored in remote secondary storages
Expensive for single customers, cheap for large businesses
Solid State
Flash memory, no moving parts
Light is flashed and data recorded
Advantages
High read/write speed
Durable and Reliable
Disadvantages
Highest Cost per GB
Types of Solid Stage Storage
SSD
USB Sticks
SD Cards