HDD industry will grow to over $33 bln by 2011. Over 2.5 bln HDDs will ship in the next five years to numerous applications and devices, TrendFocus says. Seagate Technology, with a market share of more than 30%, leads the HDD market, followed by Western Digital, Hitachi GST, Samsung, Fujitsu, and Toshiba are competing across a range of markets.