storage medium

general term used to describe devices that store data in a computer (such as a disk)

A data storage device is a device for recording (storing) information (data). Recording can be done using virtually any form of energy. 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.
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Noun
1. a medium for storing information
(synonym) data-storage medium
(hypernym) medium
(hyponym) magnetic storage medium, magnetic medium, magnetic storage