Worldwide external controller-based (ECB) disk storage revenue totaled $3,7-billion in the second quarter of 2007, a 3,3% increase over the same period in 2006, according to Gartner.

EMC maintained the Number 1 spot overall, finishing the quarter at 25,2% market share. IBM was in second place with 14,8% of the market, followed by Hewlett-Packard with 13,8%. Dell improved its market share to secure the Number 4 spot with 9,2% share, overtaking both Hitachi/HDS and NetApp.
Dell showed the strongest growth year-over-year among the top-tier vendors, with 25,1% revenue growth for the quarter.
Hitachi/HDS slipped one spot, ending the quarter in the Number 5 position with 8,2% of the market. NetApp slipped to Number 6 with a market share of 7,8%. Sun Microsystems rounded out the top vendors, remaining in the Number 7 spot with 4,8% market share. The "Others" vendors increased their share of the market by 8,2% year-over-year, accounting for 16,2% of worldwide revenue in the second quarter.
The Asia/Pacific region increased its revenue by 19 percent year-over-year.
"The Asia/Pacific region continues to show great growth opportunities for the disk array storage market," says Donna Taylor, principal analyst for Gartner's global Storage Quarterly Statistics program.
Yhe North American region, comprising  the US and Canada, grew its revenue by 4,5% year over year
"Even in an otherwise mature marketplace, rules and regulations in the financial service segments and healthcare have helped drive growth in the region," says Taylor.
External controller-based disk storage revenue in the Europe, Middle East and Africa (EMEA) region totaled $1,1-billion in the second quarter of 2007, a 1,6% increase over the same period in 2006.
"The revenue market in EMEA remained relatively flat due to a drop in high-end sales of disk arrays valued at $500 000.00 and above as buyers opted for midrange scalable systems," says Robin Burke, research vice-president at Gartner.
EMC maintained the Number 1 spot with a 23,2% share in the second quarter of 2007 but grew only 2% year-on-year.
Only three vendors showed year-on-year double-digit growth with Dell growing more than 50%. Strong performance in its CX Series and the combination of its
MD3000 storage units with its virtual server sales helped drive the company's result. IBM, which was the only vendor to show growth in the high-end, narrowed the gap with Hewlett-Packard and saw the company lose 2,2 percentage points market share.
Gartner external controller-based disk storage reports reflect hardware only revenue, as well as hardware revenue associated with financial leases and managed services. Optional storage software revenue and storage area network infrastructure components are excluded.