A type of storage that stores data and programs when the power on a computer is switched off.
There are 3 main types of secondary storage:
In the exams you will be asked to access secondary storage on 5 different conditions. Each type of secondary storage is good in different categories, as shown in the table below:
|Storage||Capacity||Speed||Portability||Durability||Reliability||Magnetic||High||Fairly fast. Not as fast as flash.||Poor - contains moving components||Less durable than flash due to moving parts.||Reliable|
|Optical||Fairly high for size||Slowest||Most portable||Least durable||Unreliable - can be easily damaged|
|Flash||High, but lower than magnetic hard disk||Fastest||Portable- contains no moving parts||Most durable||Reliable|