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Disk Head
A disk read-and-write head is the small part of a disk drive which moves above the disk platter and transforms the platter's magnetic field into electrical current (reads the disk) or, vice versa, transforms electrical current into magnetic field (writes the disk). The heads have gone through a number of changes over the years. In a hard drive, the heads ''fly'' above the disk surface with clearance of as little as 3 nanometres. The flying height has been decreasing with each new generation of technology to enable higher areal density. The flying height of the head is controlled by the design of an air bearing etched onto the disk-facing surface of the ''slider''. The role of the air bearing is to maintain the flying height constant as the head moves over the surface of the disk. The air bearings are carefully designed to maintain the same height across the entire platter, despite differing speeds depending on the head distance from the center of the platter. If the head hit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Disk Drive
Disk storage (also sometimes called drive storage) is a general category of storage mechanisms where data is recorded by various electronic, magnetic, optical, or mechanical changes to a surface layer of one or more rotating disks. A disk drive is a device implementing such a storage mechanism. Notable types are the hard disk drive (HDD) containing a non-removable disk, the floppy disk drive (FDD) and its removable floppy disk, and various optical disc drives (ODD) and associated optical disc media. (The spelling ''disk'' and ''disc'' are used interchangeably except where trademarks preclude one usage, e.g. the Compact Disc logo. The choice of a particular form is frequently historical, as in IBM's usage of the ''disk'' form beginning in 1956 with the " IBM 350 disk storage unit".) Background Audio information was originally recorded by analog methods (see Sound recording and reproduction). Similarly the first video disc used an analog recording method. In the music indu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seagate ST33232A Hard Disk Head And Platters Detail
Seagate or Sea Gate may refer to: __NOTOC__ * Sea gate, a channel or waterway which gives access to the ocean * Sea-gate, a castle drawbridge Locations In the United States * Sea Gate, Brooklyn, a gated community in New York * SeaGate Convention Centre in Toledo, Ohio * Seagate (Manatee County, Florida), a historic estate built in Florida in 1929 * Seagate, North Carolina, a community in North Carolina * One SeaGate, a building in Toledo, Ohio In Scotland * Seagate bus station, a station in Dundee * Seagate Castle, a castle North Ayrshire Business * Seagate Technology, a data storage company * Sea Gate Distributors, a defunct comic book distributor * Seagate Software, a software company See also * Watergate (architecture) * Gate (water transport) * * * * * Gate (other) * Sea (other) The Sea is a body of water covering most of Earth. Sea or SEA may also refer to: Places Geography * SEA, an acronym for Southeast Asia * SEA, an acronym for Southeast Afr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
