Private company

Dysan

Logo: Dysan, Public domain, via Wikimedia Commons3

American storage media manufacturing corporation

Dysan Corporation was an American storage media manufacturing corporation, formed in 1973 in San Jose, California, by CEO and former president C. Norman Dion. It was instrumental in the development of the 5.25" floppy disk, which appeared in 1976.2 It ceased to exist in 1984.1 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

1973Founded1
  • HeadquartersSanta Clara1
  • Founded inSan Jose1
Dysan floppy disk 01
Photo: Zerro at Polish Wikipedia, Public domain, via Wikimedia Commons5

Dysan Corporation was an American storage media manufacturing corporation, formed in 1973 in San Jose, California, by CEO and former president C. Norman Dion. It was instrumental in the development of the 5.25" floppy disk, which appeared in 1976.2

The story

In 1983, Jerry Pournelle reported in BYTE that a software-publisher friend of his "distributes all his software on Dysan disks. It costs more to begin with, but saves [the cost of replacing defective media] in the long run, or so he says". By that year Dysan was a Fortune 500 company, had over 1200 employees, and was ranked as among the top ten private sector employers within Silicon Valley by the San Jose Mercury News, in terms of number of employees. In addition, some of Dysan's administrative and disk production facilities, located within the company's Santa Clara, manufacturing campus, were regarded as architecturally remarkable. For example, some of Dysan's Santa Clara campus magnetic media manufacturing facilities included architectural features such as large indoor employee lounge atriums, incorporating glass encased ceilings and walls, live indoor lush landscaping, waterfalls, running water creeks, and ponds with live fish.

In addition to manufacturing floppies, tape drives and hard disk drives, Dysan also produced hardware and storage containers for the disks.

Dysan merged with Xidex Magnetics in the spring of 1984. In 1997, under the direction of Jerry Ticerelli, Xidex declared bankruptcy. Xidex was absorbed by Anacomp and later spun off as a wholly owned subsidiary as Dysan.

After a brief re-opening in 2003, the company closed six months later under the direction of Dylan Campbell.

From Wikipedia’s article on Dysan, shared under CC BY-SA 4.0.4

Products and brands

It is possible that Dysan was one of the first tech-based companies to offer a service for recycling used products. Some Dysan packaging included the following label:

Flexible media should be disposed of in an environmentally sound manner.

Consumers may send used diskettes (regardless of brand) to:

Dysan Enviro-Center

Read the full text

P.O. Box 361510

Milpitas, CA 95036-1510

From Wikipedia’s article on Dysan, shared under CC BY-SA 4.0.4

Timeline

  1. 1984Dissolved Dissolved1
  2. 1973Founded Founded in San Jose1

Sources

The numbers on this page point here. Each one links to the record it came from.

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