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A storage device which is used to store data &information external to the main storage is known as Backing storage. A storage device refers to a computing hardware used tostore information permanently or temporarily. The device can be external orinternal to a computer, server, and other computing systems. Storage devicesare also known as storage medias or storage medium. An external storage device, also referred to as auxiliarystorage and secondary storage, is a device that contains all the addressabledata storage that is not inside a computer's main storage or memory. The term backing storage refers to any non-volatile datastorage that will retain a computer's data even after the computer is poweredoff. Common types of backing storage devices are hard drives, SSD, externalhard disk drives, optical media such as CD or DVD, and flash media such asthumbdrives and memory sticks.
