ST4000NM002A Seagate Exos 7E8 4TB SATA 256 MB 3.5" Server HDD

High-Density 3.5in Enterprise SATA HDD for 24x7 Arrays with the ST4000NM002A

The ST4000NM002A is a 3.5in internal enterprise HDD engineered for predictable throughput and sustained I/O in SATA JBOD and RAID architectures. In modern server platforms where CPU cores, memory channels, and PCIe lanes are reserved for compute and networking, the ST4000NM002A provides capacity-heavy storage tiers that keep host resources focused on application execution while maintaining consistent read performance for shared datasets and backups.

Designed around CMR recording and Advanced Format support (4Kn/512e), the ST4000NM002A integrates cleanly into mixed fleets and controller stacks, reducing rebuild and parity-verification risk compared to write-variable media. Its 7200RPM design, large cache, and SATA interface alignment make it suitable behind HBA-connected expansion shelves, scale-out object nodes, or general-purpose server storage where sequential bandwidth and operational stability are the primary architectural goals.

Why Choose the ST4000NM002A?

The ST4000NM002A targets dependable capacity density for always-on environments, balancing enclosure count, power budget, and serviceability in shared storage pools. With an enterprise duty-cycle profile and strong reliability characteristics, the ST4000NM002A supports scalable deployment patterns from small RAID sets to multi-shelf JBOD domains, enabling consistent operational behavior across growth phases and maintenance windows.

Seagate designs the Exos enterprise family with an engineering focus on sustained workload operation, environmental robustness, and predictable lifecycle behavior in data centre racks. The ST4000NM002A reflects this approach through platform-validated firmware behavior and reliability metrics aligned to 24x7 service expectations and standard SATA infrastructure.

Key Applications:

• Bulk storage tiers in rack servers
• Backup and archive repositories
• General-purpose server storage pools
• SATA JBOD/RAID arrays
• Scale-out object storage nodes

At Happyware - Server Hardware you benefit from non-binding offers tailored to your capacity planning and array topology requirements, and can secure bulk order discount options when standardising on the ST4000NM002A across multiple nodes or expansion shelves.