The new AccuRAID AR424I and AR424IR high-performance storage servers from Sans Digital are iSCSI RAID 24-bay machines that come with either a 4-channel single controller (upgradeable) or 8-channel redundant controller, as well as up to 900MB per second read and write performance over Gigabit Ethernet (performance charts after the jump). They support up to 192TB raw storage capacity in a single 4U machine and are positioned as economical and competitive alternatives to Fibre Channel SAN products.