Learn more about Western Digital WD4006FFBXModelBrandWDSeriesRed 6.0Gb/sCapacity4TBRecording TechnologyCMRRPM7200 RPMCache256MBPower ConsumptionRead/Write: 5.98 WIdle: 3.6 WStandby/Sleep: 1.0 WFeaturesFeaturesPowering Smarter AI-Driven Content Management WD Red Pro HDDs provide increased storage capacity and durability for the enhanced feature sets of AI-driven NAS solutions, boosting your organization's productivity and data storage efficiency. Fueling AI NAS Performance from Data to InsightBuilt to support AI-powered NAS features and data-intensive workloads, WD Red Pro delivers the performance, scalability, and reliability required to unlock the full potential of your local AI NAS system environment.Durability for Heavy Workloads With a workload rating of up to 550TB/yr, WD Red Pro hard drives are designed to handle the rigorous demands of high-intensity 24x7 multi-user NAS environments. Enterprise-class Capacity and Reliability WD Red Pro drives are offered in a wide range of capacity points - from 2TB to 26TB - to scale with the needs of your organization, and are rated at up to 2.5 million hours mean time before failure (MTBF).Optimized for RAID WD Red Pro drives feature Time-Limited Error Recovery (TLER), which helps ensure uninterrupted operation in RAID-powered NAS and AI NAS systems.UsageEnterprise NAS Hard DrivesDimensionsForm Factor3.5"Height (maximum)26.10mmWidth (maximum)101.60mmLength (maximum)147.00mmAdditional InformationFirst Listed on NeweggOctober 13, 2026ShippingEnjoy fast and reliable shipping when you buy your products from Newegg. Our ordering and shipping services are among the best in the industry due to short processing times and a variety of shipping methods. Your orders are packaged at one of the many local warehouses across the country, minimizing delivery times and ensuring you get your purchases as soon as possible.PaymentsNewegg has partnered with PayPal to offer you the very best in payment services. PayPal allows you to buy with confidence, knowing your payments are processed quickly and securely with state-of-the-art encryption technology.ReturnReturns are subject to restocking fees of 15% - 30% of the purchase price and return shipping fees. For products that are eligible for return for replacement, the return shipping labels are free for returns for replacement of the same item within the applicable return policy period. Newegg does NOT charge for restocking fees or return shipping labels for returns of defective products, or if you received the wrong product, the product did not match what was shown on the Site, or we made some other shipping error, provided the item is returned within its return policy period, and in accordance with the Return Policy. For international buyers, items shipped internationally do not qualify for manufacturer warranties.