Supermicro SC745 BTQ-R1K28B-SQ - tower - 4U - enhanced extended ATX

Optimized for enterprise-level heavy-capacity storage applications, Supermicro's SC418 chassis supports 4-way server boards that demand high volume I/O or computational usage and features 48 hot-swap 2.5" SAS/SATA hard drive trays and 2 fixed internal 3.5" hard drive bays in a 4U space. The SC418 design offers maximum HDD per space ratio in a 4U form factor, high power efficiency with redundant power supplies, optimized HDD signal trace routing and improved HDD tray design to dampen HDD vibrations and maximize performance.