Hard disk drives (HDDs) are of the latter type, where the disks are sealed inside the drive. Floppy disk drives and less popular variants such as Zip or Jaz drives are of the former type, where the disk(s) can be separated from the drive. It consists of a spinning disk note the spelling is an important distinguisher "disk" with a "K" is specifically for magnetic disks, while "disc" with a "C" is for all other types of discs regardless of what they do that is read and written by a magnet called a "head." Magnetic disks are much cheaper and slower than RAM (including Flash Memory), pricier and faster than Optical Discs, and can store enormous amounts of data (in recent years reaching measurements in terabytes for larger drives compared to the gigabytes used for even the largest of other storage formats).ĭisk storage devices, or disk drives, are either removable or fixed. The interior of a hard drive, including the magnetic disk.Ī form of Mass Storage, one of the earliest popular forms and utterly ubiquitous today.
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