ST4000NM025B Seagate Exos 7E10 4TB SAS 256 MB 3.5" Server HDD

High-Performance 3.5in Enterprise SAS HDD featuring dual-port 12Gb/s connectivity with the ST4000NM025B

The ST4000NM025B is a Seagate Exos 7E10 3.5in enterprise HDD designed for predictable throughput and sustained 24x7 duty cycles in rack servers and shared storage. In CPU-dense platforms where PCIe lanes are prioritized for NICs, HBAs, and accelerators, the ST4000NM025B integrates cleanly behind a 12Gb/s SAS fabric, enabling consistent bandwidth scaling without consuming valuable PCIe slots for additional NVMe.

For memory-centric virtualization hosts and storage nodes, the ST4000NM025B supports bulk-capacity tiers with CMR recording and 7200RPM rotational performance, reducing rebuild variability in RAID groups. Dual-port SAS provides multipath resiliency for high-availability controllers, while Advanced Format flexibility (512e/4Kn) supports modern OS and array alignment strategies. T10 DIF/Protection Information strengthens end-to-end integrity across HBAs, backplanes, and controllers where silent data corruption risk must be controlled.

Why Choose the ST4000NM025B?

The ST4000NM025B delivers an enterprise-appropriate density-to-reliability profile for capacity pools that must scale predictably across enclosures and shelves. With dual-port SAS for path redundancy and a 2.0M-hour MTBF design target, the ST4000NM025B aligns with operational models that emphasize serviceability, hot-swap maintenance, and controlled RAID expansion in SAN/NAS and server-attached storage deployments.

Seagate engineers the Exos portfolio for consistent behavior under mixed workloads, emphasizing vibration tolerance, sustained operation within standard data centre thermal envelopes, and compatibility with common 12Gb/s SAS backplanes and RAID/HBA ecosystems.

Key Applications:

• SAS SAN/NAS bulk capacity tiers
• RAID storage pools with integrity requirements
• Virtualization datastores
• Backup and archive repositories
• Log and telemetry retention

At Happyware - Server Hardware you benefit from non-binding offers tailored to your capacity and controller topology, helping you standardize ST4000NM025B deployments across shelves and spares. Bulk order discount options support efficient procurement for fleet refreshes and phased expansion cycles.