Western Digital Red Pro internal hard drive 4 TB 7200 RPM 256 MB 3.5" Serial ATA III

Enterprise-class storage ideal to power AI NAS at every scale.
Powering Smarter Content Management​
WD Red Pro HDDs deliver the capacity and durability AI-driven NAS solutions depend on, supporting advanced data management and content aggregation. As AI NAS stores more structured and unstructured data, WD Red Pro scales to keep pace — boosting productivity and storage efficiency.

Durability for Heavy Workloads
With a workload rating of up to 550TB/yr3, WD Red Pro hard drives are designed to handle the rigorous demands of high-intensity, 24×7 multi-user NAS environments. Continuous operation is exactly what these drives are built for — so your AI NAS runs hard without slowing down.

Enterprise-Class Capacity and Reliability
WD Red Pro drives are offered across a wide range of capacity points — from 2TB to 26TB1— to scale with the needs of your organization. Rated at up to 2.5 million hours mean time before failure (MTBF)2, they deliver the enterprise-class reliability that always-on AI NAS environments depend on.

Optimized for RAID
WD Red Pro drives feature Time-Limited Error Recovery (TLER), helping ensure uninterrupted operation in RAID-powered NAS and AI NAS systems. Proven in tower and rack-mount systems with any number of bays, WD Red Pro is the right drive for AI NAS at every scale — backed by a 5-year limited warranty4.