Seagate IronWolf ST4000VN008 4TB 5900 RPM 64MB SATA 6.0Gb/s 3.5" internal hard drive

4 TB NAS Drive for Multi-Bay RAID

The Seagate IronWolf ST4000VN008 is a 4 TB hard drive built for network-attached storage enclosures. It uses CMR recording technology and a 5900 RPM spindle speed to deliver consistent throughput in always-on environments. The drive targets home and small-business users who need reliable capacity for shared files, backups and media libraries. Its SATA 6.0 Gb/s interface fits standard NAS bays and RAID controllers.

Thermals Noise and Power in Normal Use

AgileArray firmware provides dual-plane balancing and advanced power management to reduce vibration and heat in multi-bay chassis. Rotational Vibration sensors monitor and compensate for vibration from adjacent drives, helping maintain steady performance. The 180 TB per year workload rating and 1 million hour MTBF reflect design targets for continuous 24x7 operation. IronWolf Health Management adds preventative monitoring for early issue detection.

CMR Recording Technology Determines Fit

This drive uses conventional magnetic recording (CMR), which sustains write performance during heavy RAID rebuilds and random I/O workloads. Shingled magnetic recording drives, by contrast, can throttle under sustained writes and are not suited for parity-based arrays. Buyers who need a non-CMR drive for archival-only storage or who require a 2.5 inch form factor for laptop bays should choose a different model.