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A hard disk drive (HDD), hard disk, hard drive, or fixed disk [a] 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.
A Hitachi Travelstar 80GN 60GB hard drive (front and back) Travelstar was a brand of 2.5-inch hard disk drive (HDD) that was introduced by IBM in 1994 with the announcement of the Travelstar LP. At 12.5 mm high with two platters , they were available in 360, 540 and 720 MB capacities.
ExcelStor ES3220 20 GB drive Mechanism of an ExcelStor 80 GB hard disk manufactured in 2004. ExcelStor Technology (Chinese: 易拓科技) was established in 2000 as a small hard disk drive manufacturer and has evolved into a contract manufacturer and a system integrator.
2009 - Western Digital is the first to offer a 1 TB hard drive in a 2.5 inch form factor. [57] 2009 – Western Digital ships first HDD with dual stage piezoelectric actuator [58] 2010 – First hard drive manufactured by using the Advanced Format of 4,096‑byte sectors instead of 512‑byte sectors. [59]: Overview
As a removable-disk hard drive, it contains a solid hard disk platter on which the data is stored. When the SparQ drive was launched, it was relatively cheap. Compared to the Zip drive whose 100 MB disk could cost US$22, a 1 GB SparQ disk could cost US$39 — slightly less than twice the cost for ten times the storage capacity.
Hard drives use magnetic memory to store giga- and terabytes of data in computers. Information is written to and read from the storage medium as it moves past devices called read-and-write heads that operate very close (often tens of nanometers) over the magnetic surface. The read-and-write head is used to detect and modify the magnetisation of ...