Worldwide external controller-based (ECB) disk storage revenue totalled $4,3-billion in the first quarter of 2008, a 10,2% increase over the same period in 2007. 

According to Gartner, EMC, Dell, NetApp and Fujitsu/Fujitsu Siemens all experienced strong double-digit growth year-on-year among the top-tier vendors.
EMC maintained the number one spot overall, finishing the quarter with 24,1% market share. IBM was in second place with 11,3% of the market, followed closely by HP with 11%. Hitachi/HDS was in the number four position with a market share of 10,1%.
Dell, after tying NetApp for the fifth spot in the first quarter of 2007, took over that position this quarter largely because of Dell's acquisition of EquaLogic last year.
Fujitsu/Fujitsu Siemens' revenue grew considerably year-on-year, mostly because of Fujitsu Siemens Computers introduction of new brands in Europe.
Other vendors increased their share of the market by 33,6% year-on-year, finishing the quarter with 16% of the market.
"A revenue growth of 10.2% worldwide year-on-year indicates that the storage market is still in strong demand. Capacity shipments grew 48,9% year-on-year to 1,1-million terabytes showing the continuing mounting need for additional storage," says Robin Burke, research vice-president for Gartner's global storage quarterly statistics programme.