Bays and Bays! The YY-4624 is the ultimate storage server chassis aiming to provide the most rooms for the storage device. With the 12Gbs SAS expander interface, The frontal 24 HDD bays can be easily configured from the control side and it can efficiently reduce the establishing time and cost. The 3 12cm cooling fans help introduce the fresh air to lessen the risk from the heat shock. With the flexible backboard options, our client can build the system freely for different task and application. It is the best rackmount nas case choice for IT specialists. .