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Name Country of origin Year of market entry Year of market exit Fate Notes References 3M: United States: 1981: 1983: HDD assets sold to Disc Tech One [2]Alps Electric
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.
The capacity of hard drives has grown exponentially over time. When hard drives became available for personal computers, they offered 5-megabyte capacity. During the mid-1990s the typical hard disk drive for a PC had a capacity in the range of 500 megabyte to 1 gigabyte. [6] As of October 2024 hard disk drives up to 32 TB were available. [7]
Compaq Armada laptop from the late 1990s Apple MacBook Air, an "ultraportable" laptop weighing under 3.0 lb (1.36 kg) A Lenovo IdeaPad laptop Lenovo's ThinkPad business laptop, originally an IBM product Asus Transformer Pad, a hybrid tablet, powered by Android OS Microsoft Surface Pro 3, 2-in-1 detachable Alienware gaming laptop with backlit ...
For general computer use, the 2.5-inch form factor (typically found in laptops and used for most SATA SSDs) is the most popular, in three thicknesses [98] (7.0mm, 9.5mm, 14.8 or 15.0mm; with 12.0mm also available for some models). For desktop computers with 3.5-inch hard disk drive slots, a simple adapter plate can be used to make such a drive fit.
A typical magnetic region on a hard-disk platter (as of 2006) is about 200–250 nanometers wide (in the radial direction of the platter) and extends about 25–30 nanometers in the down-track direction (the circumferential direction on the platter), [citation needed] corresponding to about 100 billion bits per square inch of disk area (15.5 ...
securing a 3.5-inch hard disk drive to the case; holding an expansion card in place by its metal slot cover; fastening case components to one another; usually, one or more #6-32 UNC screws hold the main cover on the case; They are almost always provided with a #2 Phillips drive. Sometimes a Green Robertson or Torx drive is used instead. All ...
Lebanon, [b] officially the Republic of Lebanon, [c] is a country in the Levant region of WestSituated at the crossroads of the Mediterranean Basin and the Arabian Peninsula, [11] it is bordered by Syria to the north and east, Israel to the south, and the Mediterranean Sea to the west; Cyprus lies a short distance from the coastline.