What does a storage unit provide?

Data storage is the precise term for assembling data in certain forms for computer or devices. Different types of data storage serve different roles in a computing environment. In a computer, data storage is the place where data is held in electromagnetic or optical form for access by a computer processor. Storage is frequently used to describe devices and data connected to the computer through input/output operations.

Hard disk, tape systems and other forms of storage that don't include computer memory, and other in computer storage. The options for this kind of containment are of a much greater variety and expense than those related to memory.