Seagate IronWolf, Pro 4 TB, Enterprise Internal NAS HDDCMR 3.5 Inch, SATA 6 Gb/s, 7,200 RPM, 256 MB Cache for RAID NAS, Rescue Services-Frustration Free Packaging (ST4000NTZ01)

High Performance: All-CMR (conventional magnetic recording) portfolio enables consistent, industry-leading 24×7 performance allowing users to access data anytime, anywhere Class-Leading Dependability: Up to 550 TB/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 Optimised 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