These are organized by form and function.
These are organized by a classification scheme developed exclusively for Cosma. More…
storage : space or a place for storing — Webster
Data storage device is a device for recording (storing) information (data). Recording can be done using virtually any form of energy, spanning from manual muscle power in handwriting, to acoustic vibrations in phonographic recording, to electromagnetic energy modulating magnetic tape and optical discs. A storage device may hold information, process information, or both. A device that only holds information is a recording medium. Devices that process information (data storage equipment) may either access a separate portable (removable) recording medium or a permanent component to store and retrieve information. (Data storage device, 2015) Data storage device. — Wikipedia