ST16000NM003G Seagate Exos X16 16TB SATA 256 MB 3.5" Server HDD

High-Density 3.5-inch Enterprise Nearline HDD featuring helium-sealed CMR storage with the ST16000NM003G

The ST16000NM003G is a 16TB 3.5-inch internal enterprise HDD designed for capacity-focused server and storage platforms where CPU and memory resources are allocated to data services while disks provide predictable nearline throughput. In SATA single-port architectures, the ST16000NM003G supports consistent streaming behavior for scale-out nodes, capacity tiers, and backup targets that prioritize sustained sequential performance and deterministic latency characteristics.

Integrated into modern x86 storage servers, the ST16000NM003G aligns with PCIe-based HBA/RAID topologies that aggregate many SATA lanes behind SAS expanders or direct-attach backplanes. CMR recording supports stable write amplification behavior for object stores and large block repositories, while 512e/4Kn flexibility eases sector-format alignment across OS, filesystem, and application stacks. A 256MB cache assists burst absorption in mixed read/write windows, and 7200 RPM operation provides the rotational profile commonly engineered into NAS/SAN capacity tiers.

Why Choose the ST16000NM003G?

The ST16000NM003G delivers a practical density-to-bay ratio for data centers expanding nearline capacity without increasing rack footprint, while maintaining enterprise duty-cycle suitability for 24/7 operation. With 2.5M hours MTBF, the ST16000NM003G supports scalable deployment patterns such as multi-node object storage and backup grids where drive reliability and predictable replacement planning are essential.

Seagate engineers the Exos platform for continuous data center workloads, combining helium-filled mechanics, humidity sensing, and PowerChoice/PowerBalance controls to meet modern power and thermal envelopes. Features such as Instant Secure Erase (ISE) are aligned to operational security requirements and controlled decommissioning workflows.

Key Applications:

• Scale-out object storage
• Nearline data lakes
• Backup and archive repositories
• NAS/SAN capacity tiers (SATA)

At Happyware - Server Hardware you benefit from non-binding offers tailored to your deployment quantities and an extended warranty up to 6 years to reduce risk for long-lived ST16000NM003G capacity expansions.