Secondary Storage

index > 2.1.2 computer hardware

Secondary Storage

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