ST4000NM0025 Seagate Exos 4TB SAS 128 MB 3.5" Server HDD

High-Performance 3.5-inch Enterprise SAS HDD featuring 24x7 CMR throughput with the ST4000NM0025

The ST4000NM0025 is a 4TB, 3.5-inch internal Seagate Exos enterprise HDD engineered for SAS 12Gb/s backplanes in modern rack servers and storage arrays, where predictable latency and continuous duty cycles are mandatory. Designed for tiered architectures, the ST4000NM0025 supports capacity-focused pools that complement CPU and memory-intensive application tiers by keeping archival, log, and repository data on cost-efficient rotational media without sacrificing enterprise control-plane features.

Within SAS-based platforms, the ST4000NM0025 integrates cleanly into RAID shelves and OEM enterprise systems, leveraging 12Gb/s SAS connectivity for consistent link behavior across multipath-capable fabrics while maintaining straightforward single-port deployment. Its 7200 RPM spindle and 128MB cache sustain steady sequential performance for backup and ingest pipelines, while CMR recording and 512n formatting simplify interoperability with operating systems, controllers, and software-defined storage stacks that require deterministic sector handling.

Why Choose the ST4000NM0025?

The ST4000NM0025 delivers an efficient density-to-bay ratio for capacity tiers where scaling is achieved by adding spindles, not accelerators. For enterprise reliability, the ST4000NM0025 includes T10 DIF and Super Parity data integrity capabilities and a dual-processor controller to strengthen end-to-end protection in SAS RAID environments. With 2.0M hours MTBF and 24x7 rating, the ST4000NM0025 is suited to standardized fleet deployment across backup repositories, nearline pools, and shared storage arrays.

Seagate designs the Exos family around controlled thermal behavior, predictable error recovery, and sustained operation in multi-drive enclosures. This engineering approach aligns the platform to data centre standards for serviceability and long-life operation, supporting consistent performance under vibration and high utilization profiles common to dense storage nodes.

Key Applications:

• SAS RAID shelves and JBOD expansion
• Tiered capacity storage in server clusters
• Backup repositories and archive targets
• Log retention and compliance storage

At Happyware - Server Hardware you benefit from non-binding offers tailored to your rollout and RAID shelf requirements, helping you standardize on ST4000NM0025 across projects with predictable procurement. For larger deployments, bulk order discount options support cost-controlled scaling of ST4000NM0025 in multi-bay arrays and fleet refresh cycles.