ST4000NT001 Seagate IronWolf Pro NAS HDD +Rescue 4TB SATA 256 MB 3.5" Server HDD

High-Density 3.5in SATA Enterprise NAS HDD featuring CMR RAID behaviour with the ST4000NT001

The ST4000NT001 is a 3.5in internal enterprise HDD engineered for multi-bay NAS and server storage tiers where predictable latency and sustained throughput matter more than burst performance. As a SATA 6Gb/s device, it integrates cleanly into standard HBA and backplane designs, enabling cost-efficient capacity expansion without changing the existing PCIe topology or storage software stack.

With CMR recording, 7200RPM spindle speed, and a 256MB cache, the ST4000NT001 supports consistent write characteristics that align well with RAID rebuild windows and long retention workloads. The 512e sector format maintains broad OS and controller compatibility, while 4Kn emulation paths simplify modernization planning. In mixed SMB file services, backup targets, and workstation archives, the ST4000NT001 provides a stable capacity layer for sequential data flows and large-file access patterns, optimized for 24/7 duty cycles in dense enclosures.

Why Choose the ST4000NT001?

The ST4000NT001 is designed to deliver an efficient density-to-reliability profile for multi-drive arrays, combining NAS-aware firmware behaviour with mechanical controls that protect RAID availability. TLER helps avoid unnecessary drive dropouts under error recovery, while rotational vibration sensing and dual-plane balance support stable operation across populated bays, improving scalability as chassis counts and spindle density increase.

Seagate designs IronWolf Pro NAS-class drives with a focus on predictable enterprise operation, qualification for continuous service, and alignment with modern NAS and server backplanes. Reliability engineering is reinforced by a 2.0M-hour MTBF target and attention to vibration management and sustained operating envelopes suitable for data centre and edge deployments.

Key Applications:

• SMB NAS file services
• RAID arrays and rebuild-sensitive tiers
• Edge and branch backup repositories
• Workstation bulk datasets and local archives
• On-prem retention and capacity tiers

At Happyware - Server Hardware you benefit from non-binding offers tailored to your storage architecture and deployment volume, helping you standardize on the ST4000NT001 for consistent fleet behaviour. For rollout and refresh projects, bulk order discount options support efficient procurement across multi-bay NAS and server environments.