WL 4TB 7200RPM 64MB Cache SATA 6.0Gb/s (Enterprise Grade) 3.5" Hard Drive (For Server, RAID, NAS, DVR, Desktop PC) w/1 Year Warranty Industry's highest capacity nearline drive - SATA III (6.0Gbs) Enterprise hard drives are available in capacities 4TB to suit even the most demanding storage needs Highest performance for business-critical applications - delivers 6 Gb/s transfer rates, sustained sequential data rates of 171 MB/s and high random I/O rates Designed for quality and reliability - With a field-tested 1.2 million hour MTBF, this high performance drive delivers the highest level of reliability for 24x7 operation in up to 100% duty cycle applications Dual processor - Twice the processing power to maximize performance Vibration Protection - Enhanced RAFF technology includes sophisticated electronics to monitor the drive and correct both linear and rotational vibration in real time. 1 Year Warranty from Reseller