ST6000NM021B Seagate Exos 7E10 6TB SATA 256 MB 3.5" Server HDD

Product line:

Exos

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Happyware Article Number:

SH0H8802-371665

Manufacturer Number:

ST6000NM021B

Brand:

Seagate

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Description Technical details Warranty & Technical Support Reviews Bulk Deals

ST6000NM021B

High-Performance 3.5in Enterprise SATA HDD featuring capacity-optimised CMR storage with the ST6000NM021B

The ST6000NM021B is a 6TB, 7,200 RPM 3.5in enterprise HDD engineered for SATA server and NAS tiers where predictable latency, sustained throughput, and deterministic write behaviour are required. As a CMR drive, it maintains stable performance in RAID groups and storage pools, supporting 512e and 4Kn sector formats to align with modern OS and hypervisor storage stacks.

Designed for systems built around contemporary multi-core CPU platforms and high-memory footprints, the ST6000NM021B complements PCIe-based flash tiers by providing cost-efficient capacity behind HBA or integrated SATA controllers. Its 256MB cache supports burst handling for mixed read/write streams, while PowerChoice/PowerBalance features help manage rack-level power envelopes in dense chassis. The ST6000NM021B is suited to scale-out storage nodes where expansion is driven by bay density rather than PCIe lanes.

Why Choose the ST6000NM021B?

The ST6000NM021B delivers a balanced density-to-performance profile for enterprise arrays that need 24x7 operation, consistent CMR behaviour, and security-managed media handling. With 2.0M hours MTBF and Seagate Secure SED capabilities, it fits deployments that prioritise lifecycle reliability, controlled decommissioning, and straightforward scaling via standard SATA backplanes and JBOD shelves.

Seagate’s Exos engineering approach emphasises datacentre-grade reliability, workload suitability in multi-drive environments, and operational efficiency controls that align with standard rack thermals and power governance. The ST6000NM021B integrates hardware encryption with Instant Secure Erase to support policy-driven data handling without adding CPU overhead.

Key Applications:

Capacity-oriented server and NAS storage tiers
Backup and archive repositories
Dense SATA RAID arrays and JBOD expansion
Security-managed storage with secure erase requirements
Virtualisation secondary datastores

At Happyware - Server Hardware you benefit from non-binding offers tailored to your storage architecture and rollout schedule, enabling efficient procurement for SATA array expansions using the ST6000NM021B. For larger deployments, bulk order discount options help standardise drive populations across racks and sites.

Technical details of ST6000NM021B

Capacity: 6TB

Form Factor: 3.5"

Interface: SATA

Rotations: 7200RPM

Cache: 256 MB

How long is the Warranty and how you can get technical support for ST6000NM021B

Warranty:	36 months (part)
RMA through customer:	yes
RMA Url:	https://www.seagate.com/support/warranty-and-replacements/
Description:	Items must be returned first for RMA. Advanced replacement is not available. No guaranteed delivery times specified. On-site service is not offered as standard. The warranty does not cover data loss. Regular data backups are recommended