Future-Proof Speed: IronWolf 525 boosts NAS caching and tiered storage solutions to the next level with PCIe Gen 4 speeds up to 5000MB/s, while maintaining backward compatibility with PCIe Gen 3 systems. Always On, Always Accessible: Designed to deliver performance in demanding 24x7 low latency, multi-user environments, enabling fast access to data any time, anywhere. Built Tough: Endurance rating of 0.7 DWPD ensures robust performance in NAS and other intensive client workloads. Class-Leading Reliability and Dependability: Rated for 1.8M hours MTBF best-in-class total cost of ownership (TCO). Purpose-Built Capacities: Choose from 500GB, 1TB and 2TB, ideal for primary storage or fast caching. IronWolf Health Management (IHM): Actively monitor and protect your NAS data with error Prevention, Intervention and Recovery recommendations.