Seagate Constellation ST9500530NS 500GB 7200 RPM 32MB Cache SATA 3.0Gb/s 2.5″ Internal Enterprise-class Hard Drive Bare Drive

Best-in-class rotational vibration tolerance ensures unrivalled performance in high spindle-density applications, and multi-drive firmware maximizes system availability, Industry’s highest-reliability in a 7200-RPM drive with a 1.2M-hour mean-time-between-failure (MTBF) rating that’s designed for 24×7 operation, Industry’s leading 2.5-inch, mainstream capacity, 15mm enterprise-class nearline drive for dense, space-constrained data centers, Lowest operating power at less than 4 watts and up to 54 percent additional idle power savings with host-selectable, on-demand PowerChoice feature