Manufacturers and Sales
See also: History of hard disk drives and List of defunct hard disk manufacturersMore than 200 companies have manufactured HDDs over time. But recent consolidations have concentrated production into just three manufacturers: Western Digital, Seagate, and Toshiba.
Worldwide revenues for HDDs shipments are expected to reach $38 billion in 2012, up about 19% from $32 billion in 2011. This corresponds to a 2012 unit shipment forecast of 673 million units compared to 624 million units in 2011 and 654 million units in 2010 (the drop in 2011 was due to the impact of Thailand flooding on HDD production capacity in late 2011). The estimated 2012 market shares are about 40% each for Seagate and Western Digital and 15-20% for Toshiba.
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