The total network storage market (NAS combined with Open and iSCSI SAN) posted 16.1% YTY growth in Q2 2005 to nearly $2.5 bln. EMC continues to maintain its leadership in the total network storage market with 27.9% revenue share, followed by HP with 21.3%. Dell and IBM posted the strongest YTY revenue growth for Q2 2005 among the top 5 vendors, with 33.2% and 22.9% growth, respectively. The Open/iSCSI SAN market grew 17.8% YTY, surpassing $2.0 bln in revenues for the first time. Unlike Q1 2005, there was no clear leader: EMC and HP were in a statistical tie for the first place position. EMC had 25.0% revenue share and HP had 24.8% revenue share for Q2 2005. Dell and IBM posted the strongest revenue share gain among the top 5 vendors, with 1.6 and 0.6 YTY share point gain, respectively. In the NAS market, which grew 9.5% YTY, EMC led with 40.2% revenue share, followed by Network Appliance with 35.2% share. The iSCSI SAN market posted nearly 140% revenue growth YTY. Network Appliance continues to lead the market with 41.6% share, followed by EMC with 26.0% share, according to IDC.