This B&H Kit includes the Seagate STBN100 2-Bay NAS Enclosure and two 4 TB Internal Desktop Hard Drives. The Seagate NAS enclosure included in this kit features enhanced hardware components including a dual core 700 MHz processor, 512 MB of RAM, and 256 MB of flash memory. Combine the enhanced hardware components with two 4 TB hard drives and you can quickly and efficiently store and transfer data to the 8 TB of included storage. Each included drive can be easily inserted into either of the hot swappable bays ensuring the drives can be replaced or removed without shutting down your system. Additionally, the drives can be formatted to suit a variety of storage needs as this enclosure supports RAID 0, 1, and JBOD configuration modes.