Seagate IronWolf Pro 4TB NAS Hard Drive 7200 RPM 256MB Cache CMR SATA 6.0Gb/s 3.5 Internal HDD ST4000NE001

High Performance: All-CMR (conventional magnetic recording) portfolio enables consistent, industry-leading 247 performance allowing users to access data anytime, anywhere Class-Leading Dependability: Up to 300TB/year workload rating, 2.5M hours MTBF, and 5-year limited warranty for unparalleled total cost of ownership (TCO) Peace of Mind with Data Recovery: Complimentary 3 year Rescue Data Recovery Services for a hassle-free, zero-cost data recovery experience IronWolf Health Management: Helps protect data with prevention, intervention, and recovery recommendations to ensure peak system health Optimized for NAS: AgileArray with dual-plane balancing, time-limited error recovery (TLER), and rotational vibration (RV) sensors to deliver top RAID performance in multi-bay environments