Embedded servo

Embedded servo

Embedded servo or wedge servo is a type of servo configuration used on hard disks. Embedded servo systems embed the feedback signals for the read/write head positioner (usually a voice coil motor) inside gaps ("wedges") in the data tracks of the disk. This setup allows the entire set of platters to be used, instead of having to reserve one or two surfaces for the servo's use, which makes more space for data available on the drive. Embedded servo was originally developed in the 1970s, and started to appear on mass-market hard drives for personal computers in the late 1980s.

As with dedicated-servo drives, the control signals are written at the factory using a special device called a servowriter, and cannot usually be regenerated in the field. Drives with errors in the servo areas are considered to be badly damaged and should be replaced.

External links

* [http://www.pcguide.com/ref/hdd/op/actServo-c.html Servo Techniques and Operation]


Wikimedia Foundation. 2010.

Игры ⚽ Поможем написать курсовую

Look at other dictionaries:

  • Quantum Corp. — Infobox Company company name = Quantum Corporation company type = Public (nyse|QTM) company company slogan = foundation = 1980 location = San Jose, California, USA key people = num employees = operating income = net income = industry = Data… …   Wikipedia

  • Hard disk drive — Hard drive redirects here. For other uses, see Hard drive (disambiguation). Hard disk drive Mechanical interior of a modern hard disk drive Date invented 24 December 1954 [1] …   Wikipedia

  • Western Digital — Corporation Type Public (NYSE: WDC) Industry Computer hardware …   Wikipedia

  • внутренняя сервосистема — — [http://www.iks media.ru/glossary/index.html?glossid=2400324] Тематики электросвязь, основные понятия EN embedded servo …   Справочник технического переводчика

  • List of Mega-Virus monsters — {id|Info box} width={width|100}%> In the show Superhuman Samurai Syber Squad , these beings known as Mega Virus Monsters (viruses for short) are drawn up by Malcolm Frink and brought to life by Kilokahn, who sends them into different electronic… …   Wikipedia

  • Haptic technology — This article is about haptic technology. For the study of touching behaviour in humans, see Haptic communication. For the biology of sensory receptors, see Somatosensory system. For object perception via touch, see Haptic perception. Haptic ,… …   Wikipedia

  • Lego Mindstorms — The LEGO Mindstorm series of kits contain software and hardware to create small, customizable and programmable robots. They include a programmable Brick computer that controls the system, a set of modular sensors and motors, and LEGO parts from… …   Wikipedia

  • Disc brake — Close up of a disc brake on a car On automobiles, disc brakes are often located with …   Wikipedia

  • Zilog Z80 — One of the first Z80 microprocessors manufactured; the date stamp is from June 1976. Produced 1976 Common manufacturer(s) Zilog …   Wikipedia

  • GE Fanuc Automation — Infobox Company name = GE Fanuc Intelligent Platforms type = Private (subsidiary of General Electric) foundation = Charlottesville, Virginia (1987) founder = location city = Charlottesville, Virginia location country = USA key people = Maryrose… …   Wikipedia

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”