The worldwide storage software market grew 14.9% YTY to $2.1 bln in Q1 2005, marking the 6th consecutive quarter of double-digit YTY growth, according to IDC. The storage replication software market also enjoyed strong results in Q1 2005< with 19.7% year-over-year growth. The file systems software market grew 25.4% year over year. EMC led the overall market with 30.0% revenue share in Q1 2005. VERITAS maintained its second position with 21.4% revenue share, growing 11.4% YTY. IBM finished in the third position with 8.6% revenue share. Network Appliance and HP rounded out the top 5 in a statistical tie with 6.7% and 6.6% revenue share, respectively. Network Appliance and EMC posted the strongest results among the top 5 vendors, with 61.1% and 17.9% YTY growth, respectively.