Skip to main content

Winchester technology

Winchester technology The name given to the design approach used in the IBM 3340 disk drive, which was introduced in 1973. It demonstrated a significant advance in technology, allowing an increase in recording density to 300 tracks per inch and 5600 bits per inch. The technology has been adopted by many manufacturers.

The read/write heads and the carriage assembly that supports them are enclosed with the disks in a hermetically sealed enclosure called a data module. When the data module is mounted in the drive unit it is automatically coupled to a system that supplies it with filtered cooling air. An entirely new head design was also introduced (see read/write head). The surface of the disk has an oxide coating of only 1.12 micrometers, compared to 4.7 μm of previous designs, and a lubricant coating to prevent damage during head take-off and landings.

Most recent designs using aspects of Winchester technology have the disk pack permanently fixed within the drive. The capacity of these disks ranges from a few tens of megabytes to approaching a gigabyte.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"Winchester technology." A Dictionary of Computing. . 23 Mar. 2019 <>.

"Winchester technology." A Dictionary of Computing. . (March 23, 2019).

"Winchester technology." A Dictionary of Computing. . Retrieved March 23, 2019 from

Learn more about citation styles

Citation styles gives you the ability to cite reference entries and articles according to common styles from the Modern Language Association (MLA), The Chicago Manual of Style, and the American Psychological Association (APA).

Within the “Cite this article” tool, pick a style to see how all available information looks when formatted according to that style. Then, copy and paste the text into your bibliography or works cited list.

Because each style has its own formatting nuances that evolve over time and not all information is available for every reference entry or article, cannot guarantee each citation it generates. Therefore, it’s best to use citations as a starting point before checking the style against your school or publication’s requirements and the most-recent information available at these sites:

Modern Language Association

The Chicago Manual of Style

American Psychological Association

  • Most online reference entries and articles do not have page numbers. Therefore, that information is unavailable for most content. However, the date of retrieval is often important. Refer to each style’s convention regarding the best way to format page numbers and retrieval dates.
  • In addition to the MLA, Chicago, and APA styles, your school, university, publication, or institution may have its own requirements for citations. Therefore, be sure to refer to those guidelines when editing your bibliography or works cited list.