List of defunct hard disk manufacturers

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Diagram of consolidation

It has been estimated that over 200 companies were hard disk drive manufacturers in the past. Besides competing on features such as hard disk drive (HDD) data density and latencies, many of those companies started to support new, smaller form factors that enabled the ever-reducing physical sizes of computing devices. Most of that industry has vanished through bankruptcy or mergers and acquisitions. Surviving manufacturers are Seagate, Toshiba and Western Digital.

The following is a list of known defunct HDD manufacturers:

Acquisition/merger charts of major brands[edit]

|                  |              |                 |                |
Control Data:1989  Conner:1996    Maxtor:2006       Samsung:2011     LaCie:2012
   |                     |
  MiniScribe : 1990     Quantum :2000
     |             |
     Plus:1992     DEC:1994
Western Digital
|             |        
Tandon:1988   Hitachi:2012 (2.5″, SSD & part of 3.5" facilities)
|             |
Fujitsu:2009  Hitachi:2012 (part of 3.5″ facilities)

See also[edit]


  1. ^ The Bulgarian manufacturer ISOT manufactured a 10 MB harddisk drive CM 5508 in 1989. It seems to have been used in the Iskra-1030 personal computer built in 1989 as well. The CM 5508 drive was also available under the ИЗОТ name.


  1. ^ a b c d e f g h i j k l m n o p q r s t u v w x y z aa ab ac ad ae af ag ah ai aj ak al am an ao ap aq ar as at au av aw ax ay az ba bb bc bd be bf bg bh bi bj bk bl bm bn bo McKendrick, David (November 1997). "Sustaining Competitive Advantage in Global Industries: Technological Change and Foreign Assembly in the Hard Disk Drive Industry". Archived from the original on 2014-02-09. Retrieved 2011-08-03. 
  2. ^
  3. ^ "Merger fallout puts Memorex across Atlantic". Computerworld. November 10, 1986. Retrieved 2011-08-03. 
  4. ^ Storage Search on Cornice
  5. ^
  6. ^
  7. ^ Smith, Ryan (2012-03-06), Western Digital To Sell Hitachi's 3.5" Hard Drive Business To Toshiba, Complete Hitachi Buyout, retrieved 2012-12-30, Western Digital will be allowed to acquire Hitachi’s 2.5” and SSD businesses, but not the 3.5” business. Instead Western Digital will be selling that business to Toshiba – factories and all – along with granting licenses for the necessary patents, which would allow Toshiba to effectively continue in the 3.5” market from where Hitachi left off. This would firmly establish Seagate, Western Digital, and Toshiba as the 3 major players in the hard drive business across all product segments. 
  8. ^
  9. ^
  10. ^
  11. ^ Information Technology Industry TimeLine, see 1971 entry
  12. ^
  13. ^ "Seagate Completes Acquisition of Samsung's Hard Disk Drive Business" (Press release). 2011-12-19. Retrieved 2015-08-19. 

External links[edit]