ST4000VX015 Seagate SkyHawk 4TB SATA 256 MB 3.5" Server HDD

High-Capacity 3.5-inch SATA Surveillance HDD featuring CMR continuous-write recording with the ST4000VX015

The ST4000VX015 is a 3.5-inch internal SATA HDD engineered for DVR/NVR platforms where storage performance is defined by sustained sequential writes, predictable latency, and 24/7 duty cycles rather than CPU or GPU acceleration. In typical edge appliances, the host SoC or low-power CPU handles ingest and stream management, while the ST4000VX015 provides stable write behavior that protects recording continuity under multi-camera workloads.

Architecturally, the ST4000VX015 uses CMR recording to keep write amplification low and maintain consistent throughput during long retention windows. The 4Kn/512e sector formatting supports modern file systems while preserving compatibility with established surveillance software stacks. With a 5900 RPM design and 256MB cache, the drive aligns to SATA backplanes in SMB chassis, enabling straightforward scale-out by adding bays instead of replatforming to PCIe storage.

Why Choose the ST4000VX015?

The ST4000VX015 is positioned for density-efficient video retention in standard 3.5-inch SATA bays, enabling predictable capacity planning per recorder without introducing complex flash tiering. For integrators, the ST4000VX015 supports enterprise-style deployment logic: consistent recording behavior, suitability for continuous write workloads, and an MTBF profile aligned to always-on surveillance environments where maintenance windows are limited.

Seagate designs SkyHawk-class drives with an engineering focus on workload fit, sustained operation, and compatibility across common DVR/NVR and edge gateway architectures. This approach emphasizes reliability targets, pragmatic power characteristics for dense enclosures, and adherence to data centre and remote-site operational expectations.

Key Applications:

• DVR and NVR continuous recording
• SMB surveillance edge appliances
• Video retention and archive tiers
• Bulk SATA capacity expansion

At Happyware - Server Hardware you benefit from non-binding offers tailored to your recorder or gateway bill of materials and bulk order discount options for multi-site rollouts using the ST4000VX015.