Seagate ST2000VX015, Interface SATA 6.0Gb/s, Capacity 2TB, Cache 256MB, Form Factor 3.5", Storage Capacity 2TB, Interface SATA 6 Gb/s, RPM Class 5900 RPM, Cache Buffer 256MB, Maximum Data Transfer Rate 180 MB/s, Recording Technology: SMR, MTBF 1,000,000 hours, 03 Years Limited Warranty 24×7 workloads can leverage up to 2 TB with this drive designed for DVR and NVR systems. SkyHawk surveillance drives are equipped with enhanced ImagePerfect™ and SkyHawk Health Management.