The G-Technology G-RAID 8TB Dual-Drive Storage System is a high-speed dual drive storage system capable of storing a large amount of HD quality video as well as pictures, music and documents. The 3Gbit eSATA port provides data transfer speeds up to 200MB/second giving you the speed necessary for transfer large files quickly and efficiently. You can also take advantage of two FireWire ports as well as a USB 2.0 port for added connection options. Each individual disk drive comes equipped with 32 MB cache and 7200 RPM drive speed ensuring you can read/write your data to and from the drive with no lag. The thermo-regulated smart fan cools the drive quietly and efficiently.