WD AV-25 WD2500BUCT - hard drive - 250 GB - SATA 3Gb/s

WD AV-25 2.5-inch SATA hard drives are specially engineered to offer cool quiet operation while providing maximum reliability in 24 x 7 always-on environments. With support for up to five simultaneous HD video streams, these drives are perfect for DVRs, digital video surveillance and other demanding multimedia applications.