ST4000NM006A Seagate Exos 7E8 4TB SATA 256 MB 3.5" Server HDD

High-Performance 3.5-inch Nearline Enterprise HDD featuring 24x7 CMR storage with the ST4000NM006A

The ST4000NM006A is a 4TB 3.5-inch internal enterprise HDD engineered for SATA-based rack servers and RAID storage shelves where predictable throughput, consistent latency, and sustained 24x7 duty cycles matter more than burst performance. In mixed CPU platforms—from virtualization hosts to storage controllers—the ST4000NM006A complements DRAM-cached write paths and NVMe/PCIe tiering by delivering cost-efficient capacity for warm datasets, backup repositories, and bulk storage pools.

Architecturally, the ST4000NM006A aligns with modern storage backplanes that consolidate capacity behind a host bus adapter or RAID controller, enabling scalable JBOD/RAID expansions without changing the compute layer. Its 7200RPM CMR recording supports stable rebuild behavior and predictable I/O in parity-protected arrays, while a 256MB cache helps smooth command queuing during concurrency spikes. The 512n sector format fits legacy-aligned environments and simplifies integration across heterogeneous fleets.

Why Choose the ST4000NM006A?

The ST4000NM006A provides an enterprise-ready balance of density and operational stability for nearline tiers, delivering a reliable capacity building block that scales cleanly across multi-bay chassis and storage enclosures. With 2.0M hours MTBF, PowerChoice power management, and humidity sensor support, it is designed for consistent service levels in dense data center deployments while keeping power behavior predictable at scale.

Seagate designs Exos-class drives with a focus on fleet manageability, sustained workload tolerance, and data center compatibility. The ST4000NM006A integrates security features expected in regulated environments, including Self-Encrypting Drive (SED) capability with Instant Secure Erase (ISE), enabling controlled decommissioning workflows without disrupting established storage architectures.

Key Applications:

• Data center bulk storage
• Nearline backup and archive tiers
• RAID arrays in rack servers
• SATA JBOD storage shelves
• Encrypted storage deployments

At Happyware - Server Hardware you benefit from Non-Binding Offers tailored to your capacity planning and rollout timelines for ST4000NM006A deployments, and you can extend the warranty up to 6 years to reduce lifecycle risk in always-on storage tiers.