Buffalo's TeraStation™ 5200DN is a high performance two drive network storage solution ideal for businesses and demanding users requiring a reliable RAID-based network storage solution for larger networks and business critical applications. Increased reliability is achieved with the Terastation™ 5200DN being populated with hard drives built specifically for always on NAS devices. With the powerful Intel® Atom™ D2550 processor, TeraStation™ 5200DN provides exceptional performance during file transfers and everyday NAS functions. TeraStation™ 5200DN runs many services simultaneously and the dynamic combination of the dual core 1.86 GHz processor and 2 GB DDR3 RAM enables the acute ability to focus on concurrent tasks with minimal performance degradation. TeraStation™ 5200DN is packed with business class features such as Active Directory support, disk quota support, share level replication, failover support, dual gigabit Ethernet ports, hot-swap hard drives, iSCSI targeting and USB 3.0 accessory support.