![]() ![]() ![]() The platters are paired with magnetic heads, usually arranged on a moving actuator arm, which read and write data to the platter surfaces. ![]() However, all three of these terms usually refer to the same thing - the place where your data is stored.Ī hard disk drive (HDD), hard disk, hard drive, or fixed disk is an electromechanical data storage device that uses magnetic storage to store and retrieve digital information using one or more rigid rapidly rotating disks ( platters ) coated with magnetic material. The term “hard drive” is actually short for “hard disk drive.” The term “hard disk” refers to the actual disks inside the drive. The data is stored on the hard drive magnetically, so it stays on the drive even after the power supply is turned off. These disks spin extremely fast (typically at either 5400 or 7200 RPM) so that data can be accessed immediately from anywhere on the drive. The data is stored on a stack of disks that are mounted inside a solid encasement. A typical hard drive is only slightly larger than your hand, yet can hold over 100 GB of data. A hard drive stores all your data, and is where all your files and folders are physically located. ![]()
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