Western Digital WD Red Pro 8TB 3.5' NAS HDD SATA3 7200RPM 512MB Cache 24x7 300TBW 5yrs wty * Compatibility: Unlike desktop drives, these drives are specifically tested for compatibility with NAS systems for optimum performance. * Reliability: The always-on environment of a NAS or RAID is a hot one, and desktop drives aren’t typically designed and tested under those conditions like WD Red™ Pro drives are. * Error Recovery Controls: WD Red™ Pro NAS hard drives are specifically designed with RAID error recovery control to help reduce failures within the NAS system. * Noise and Vibration Protection: Designed to operate solo, desktop drives typically offer little or no protection from the noise and vibration present in a multi-drive system. WD Red™ Pro drives are designed to thrive in multi-bay NAS system environments. Full Specifications Features - Ideal for creative pros, medium to large businesses, and commercial/enterprise NAS systems - For RAID-optimized NAS systems with an unlimited number of bays - Rated for 550TB/year workloads1 and up to 2.5M hours MTBF Capacity 8TB Form Factor 3.5-Inch Connector SATA Compatibility RAID-optimized NAS systems with unlimited # of bays Interface SATA Transfer Rate up to 235MB/s Disk Speed (RPM) 7200 RPM Recording Technology CMR Cache Size 512MB Warranty 5-Year Limited Warranty Dimensions (L x W x H) 147mm x 101.6mm x 26.1mm Operating Temperature 0°C to 65°C Non-Operating Temperature -40°C to 70°C Certifications BSMI, ICES-003/NMB-003, CE, FCC, KC, Maghreb, RCM, UKCA, VCCI, CB-Scheme, TUV, UL