WD Red Pro 4TB 3.5' NAS Hard Drive 7200RPM 512MB Cache 24x7 5yrs wty Enterprise-class hard drives engineered to deliver high performance and reliability to commercial and enterprise NAS environments. WD Red® Pro drives are engineered to handle high-intensity workloads in 24×7 multi-user commercial and enterprise NAS environments. WD Red Pro drives deliver the performance, scalability and dependability businesses require to store, share and collaborate on large amounts of data in multi-bay RAID-optimized NAS systems. Optimized for NAS with NASware™ Western Digital’s exclusive NASware™ technology fine tunes drive parameters to match NAS system workloads, which helps increase performance and reliability. Designed for Continuous Operation WD Red Pro hard drives are designed to handle the rigorous demands of high-intensity 24x7 multi-user NAS environments and increase system durability. Engineered with Industry-Leading Technology WD Red Pro 22TB and 24TB hard drives feature Western Digital’s proprietary OptiNAND™ technology which leverages integrated iNAND embedded flash to perform key housekeeping functions, freeing up more capacity and improving the overall drive performance. 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 4TB Form Factor 3.5-Inch Connector SATA Compatibility RAID-optimized NAS systems with unlimited # of bays Interface SATA Transfer Rate up to 217MB/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 Weight Model Number WD4005FFBX 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

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