FRAMINGHAM, Mass. — (BUSINESS WIRE) — September 5, 2013 — Worldwide external disk storage systems factory revenues posted a year-over-year decline of -0.8%, totaling just over $5.9 billion, in the second quarter of 2013 (2Q13), according to the International Data Corporation ( IDC) Worldwide Quarterly Disk Storage Systems Tracker. For the quarter, the total (internal plus external) disk storage systems market generated $7.7 billion in revenue, representing a -5.0% decline from the prior year's second quarter and a slight sequential decline compared to the first quarter of 2013. Total disk storage systems capacity shipped reached 8.2 exabytes, growing 21.5% year over year.

"Once again, spending on disk systems varied considerably by region," said Eric Sheppard, Research Director, Storage. "Emerging markets experienced increases in demand while spending within mature markets, including the United States, Western Europe, Canada, and Japan, fell when compared to the same quarter a year ago. This reduced demand is creating a very competitive environment and a general deterioration in pricing, which seems to worsen market conditions."

2Q13 External Disk Storage Systems Results

EMC increased its lead in the external disk storage systems market with 31.3% revenue share during the quarter, followed by NetApp and IBM in a statistical tie* for the number two position with 13.3% and 12.6% market share, respectively. HP captured the third position with 10.0% market share while Dell and Hitachi finished in a statistical tie* for fourth with 7.6%, and 7.1% market share, respectively.

Open Networked Disk Storage Systems Highlights

The total open networked disk storage market (NAS Combined with non-mainframe SAN) grew 0.2% year over year during the quarter to about $5.2 billion in revenues. EMC continues to maintain its leadership in the total open networked storage market with 34.1% revenue share, followed by NetApp with 15.2% revenue share.

In the Open SAN market, which declined -0.6% year over year, EMC was the leading vendor with 29.7% revenue share, followed by IBM in second with 15% market share. HP and NetApp accounted for 13.0% and 9.5% of sales, respectively. The NAS market increased 2.5% year over year, led by EMC with 46.3% revenue share and followed by NetApp with a 30.8% share.