Storage device and storage media
A computer hardware that facilitates writing and reading of information in the storage media in a format that the computer is able to understand and manage/manipulate.
This is the actual surface where data is stored. The storage patterns and technology will differ from one media to another in accordance to the media being used.
Primary memory and Auxiliary memory
Primary memory store data or information temporarily while Auxiliary memory stores data permanently
Primary memory accesses the processor directly while Auxiliary does not.