Skip to main content

disk pack

disk pack One form of exchangeable disk store, now obsolete, that consisted of an assembly of identical 14 diameter rigid magnetic disks mounted coaxially and equally spaced. A similar nonrecording protective disk was fitted above the top recording disk with another one below the bottom recording disk. The whole assembly was rigidly clamped together, and was designed for dynamic stability at high rotation on a disk drive. The whole pack, when not mounted on the drive, was contained within sealed plastic covers, in two parts, which helped to ensure that the pack was protected from damage, dust, and contamination. The bottom cover was removed before mounting the pack on the drive; the top cover could only be removed when the pack had been mounted.

Storage capacities ranged from 30 to 300 megabytes, over the range of track densities up to 400 tracks per inch, recording densities up to 6000 bits per inch, and pack sizes of 5 to 12 disks. Disk packs were introduced by IBM in 1963, and most types are subjects of international standards.

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

  • MLA
  • Chicago
  • APA

"disk pack." A Dictionary of Computing. . Encyclopedia.com. 21 Oct. 2018 <http://www.encyclopedia.com>.

"disk pack." A Dictionary of Computing. . Encyclopedia.com. (October 21, 2018). http://www.encyclopedia.com/computing/dictionaries-thesauruses-pictures-and-press-releases/disk-pack

"disk pack." A Dictionary of Computing. . Retrieved October 21, 2018 from Encyclopedia.com: http://www.encyclopedia.com/computing/dictionaries-thesauruses-pictures-and-press-releases/disk-pack

Learn more about citation styles

Citation styles

Encyclopedia.com 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, Encyclopedia.com cannot guarantee each citation it generates. Therefore, it’s best to use Encyclopedia.com 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

http://www.mla.org/style

The Chicago Manual of Style

http://www.chicagomanualofstyle.org/tools_citationguide.html

American Psychological Association

http://apastyle.apa.org/

Notes:
  • Most online reference entries and articles do not have page numbers. Therefore, that information is unavailable for most Encyclopedia.com 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.