Supermicro's SC827 (2U Twin2) chassis is designed to optimize performance per watt and per dollar with four independent hot-pluggable DP computing nodes efficiently organized into a 2U form factor. Each node provides three 3.5" hard drives for RAID 5 data protection and is contained in a convenient module to facilitate easy system upgrade, installation and maintenance. Equipped with high-efficiency optional 1 + 1 Gold Level redundant power supply (93%+), power-efficient server board and optimized cooling subsystems. The 2U Twin2 is the best choice for HPC, datacenter and cost-effective blade applications.