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hard disk
hard disk/ˈhärd ˌdisk/
noun
a rigid nonremovable magnetic disk with a large data storage capacity.
Hard disk drive
Computer peripheral
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A hard disk drive, hard disk, hard drive, or fixed disk is an electro-mechanical data storage device that stores and retrieves digital data using magnetic storage with one or more rigid rapidly rotating platters coated with magnetic material. Wikipedia
Lifespan: 3–5 years
Inventor: IBM
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