The ToughArmor M998SP-B boasts the ability to house an unprecedented 8 x 2.5" SATA drives with 7mm height into a single 5.25" drive bay, making it the ultimate solution for storage dense applications. Our unique hot-swappable 2.5" EZ Slide Nano trays let you painlessly and quickly swap out drives. Dual 40mm fans keep your drives nice and cool while ventilated openings located on the front and sides maximize airflow. The MB998SP-B features a heavy duty full metal housing which is commercially designed for Medical & Military systems, IPC, enterprise, and industrial settings.