Data storage means saving all your electronic information like photos, documents and videos. Everything a computer knows is called storage data. A data storage device is an object that records that information in an electromagnetic way.
There´s three types of storage devices:
The primary type: Primary storage is the storage that is directly connected to the computer. It´s volatile information, meaning that it can only save your data while the computer is on. Random Access Memory and cache are primary storage devices.
The secondary type: These storage devices aren´t volatile, so they will keep existing while the computer isn´t running. They´re cheaper than primary storage devices. Secondary storage devices can be internal, external or removable. Examples: hard drives, DVD´s, CD´s.
The tertiary/offline type: Offline storage isn´t used as much as the other two storage types are. They have to be inserted into the computer to edit or access any data saved on them. The data saved in these devices stays in the device even if its disconnected from the computer. Examples: compact disks, floppy disks, USB´s.
Hi Mercedes,
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A very kindly salute, Joaquín Arana.