PowerEdge VRTX Tower Chassis, PowerEdge VRTX Tower Configuration for 3.5 inch Hard Drives (max 12), 3 x 1TB 7.2K RPM NLSAS 512n 3.5in Hot-plug Hard Drive, 1 x DVD+/-RW SATA Internal, PowerEdge VRTX Redundant Power Supply, 4 x 1100W, (3+1), 3Yr ProSupport and Mission Critical: (7x24) 4-hour Onsite Service