EMC improved its share in the external disk storage systems market from 30.0% (3Q12) to 30.7% of total 3Q13 revenue. NetApp was the second largest supplier in the market and increased its share from 11.9% to 13.0% during the same period. IBM accounted for 11.4% of external revenue followed by HP which accounted for 9.5%. Hitachi rounded out the top 5 vendors with an 8.3% share of revenue during the quarter. Open Networked Disk Storage Systems Highlights The total open networked disk storage market (NAS Combined with non-mainframe SAN) declined by -3.4% year over year during the quarter to slightly less than $5 billion in revenue. EMC maintained its leadership in the total open networked storage market with 33.7% revenue share, followed by NetApp-s 15.0% revenue share. The Open SAN market declined by -6.1% year over year during the quarter. EMC lost share but was the leading vendor with 29.0% revenue share, followed by IBM in second with 14.4% market share.