Who's number two in disk arrays?

—According to estimates released this week by Gartner Inc., EMC held on to its number-one position in the external controller-based disk array market in the second quarter of this year—by a long shot. EMC had a 23.8% market share based on revenues, according to Gartner, and increased its revenues by 4.3% versus the second quarter of 2005. (In Gartner's calculations, EMC's revenues do not include revenues from its major resellers, Dell and Fujitsu Siemens.)

The number-two spot was a virtual tie between IBM and Hewlett-Packard, both of which posted a 14.6% market share on Q2 revenues of $526.7 million. IBM got there by increasing revenues by 4% year-over-year, while HP's revenues increased by only 1.5% to land the company in the tie for second place.

Hitachi maintained its number-four position with an 8.3% market share and increased its revenues by 5.8% over the previous year. (Gartner's estimates of Hitachi's revenues exclude revenues from its primary resellers, HP and Sun.)

Sun edged out Dell (7.5% market share) and Network Appliance (also at 7.5%) in the number-five spot with a 7.6% market share, although Network Appliance posted the strongest growth among the top-tier vendors with 22.2% revenue growth.

Sun posted 13.8% revenue growth vs. the previous year, although Donna Taylor, a principal analyst with Gartner, notes that Sun's revenue growth was attributable primarily to its acquisition of StorageTek last year.

The top-seven vendors accounted for 84.1% of the overall market for external disk arrays, while revenues for the "other" vendors declined 4.9% in the second quarter.

The overall market for external controller-based disk arrays totaled $3.6 billion in the second quarter—a 4.3% increase over the same period a year ago.

Gartner analysts will present detailed analysis of the storage industry at two upcoming conferences: The Gartner Symposium/ITxpo in Orlando, October 9–13, and the 25th Annual Data Center Conference in Las Vegas, November 28–December 1. For more information, go to www.gartner.com.

This article was originally published on September 08, 2006