Optimized for enterprise-level high-capacity storage applications, Supermicro's SC847 chassis features multiple 3.5" hot-swap HDD bays in a 4U space. The SC847 design offers extra high-density of HDD per space ratio in a 4U form factor, high power efficiency, optimized HDD signal trace routing and improved HDD tray design to dampen HDD vibrations and maximize performance. Equipped with 1400W (Gold Level) high-efficiency redundant power supplies and 7 hot-plug redundant cooling fans. SC847 is a reliable and hassle-free maintenance storage system.