a dash is used to store data in the form of short messages or Note
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Answer:
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 to store information permanently or temporarily. The device can be external or internal to a computer, server, and other computing systems. Storage devices are also known as storage medias or storage medium
An external storage device, also referred to as auxiliary storage and secondary storage, is a device that contains all the addressable data storage that is not inside a computer's main storage or memory.
The term backing storage refers to any non volatile data storage that will retain a computer's data even after the computer is powered off. Common types of backing storage devices are hard drives, SSD, external hard disk drives, optical media such as CD or DVD, and flash media such as thumbdrives and memory sticks.