Brand: Seagate | Category: Enterprise HDDs
SKU: SEA-ST12000NM000J | Part #: ST12000NM000J | MPN: ST12000NM000J
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With a 256MB cache buffer and sustained transfer rate of 261MB/s, the Seagate ST12000NM000J 12TB 3.5-inch SATA Enterprise HDD delivers the performance profile needed for backup, NAS, and archive deployments at scale. This Exos X18 series drive combines 12TB formatted capacity with SATA 6Gb/s connectivity, offering enterprise-grade reliability for storage architects and IT procurement teams evaluating large-capacity solutions.
The ST12000NM000J leverages Conventional Magnetic Recording (CMR) technology and operates at 7200 RPM spindle speed, achieving interface transfer rates up to 600MB/s. Seagate engineered this drive for demanding continuous workload environments, supporting an annualized workload rate of 550TB/year with an MTBF of 2,500,000 hours and annualized failure rate of 0.35%. Operational temperature range spans 5°C to 60°C, while active power consumption during read/write remains efficient at 7.8W. Rotational vibration compensation and robust shock handling—70Gs operating and 250Gs non-operating—protect against physical stress in multi-drive array configurations.
| Brand | Seagate |
| Category | Enterprise HDDs |
| SKU | SEA-ST12000NM000J |
| Part Number | ST12000NM000J |
| Condition | New |
| Capacity | 12TB |
| Form Factor | 3.5" |
| Interface | SATA 6Gb/s |
| Speed | 7,200 RPM |
| Manufacturer Part Number | ST12000NM000J |
| Series | Exos X18 |
| Formatted Capacity | 12TB |
| Form Factor | 3.5-inch |
| Interface | SATA 6Gb/s |
| Recording Technology | Conventional Magnetic Recording (CMR) |
| Cache Buffer | 256MB |
| Spindle Speed | 7200 RPM |
| Sustained Transfer Rate (OD) | 261MB/s |
| Interface Transfer Rate | Up to 600MB/s |
| MTBF | 2,500,000 hours |
| Annualized Failure Rate (AFR) | 0.35% |
| Workload Rate (Annualized) | 550TB/year |
| Power Consumption (Active, Read/Write) | 7.8W |
| Power Consumption (Idle A) | 5.0W |
| Operating Temperature | 5°C to 60°C |
| Rotational Vibration Compensation | Yes |
| Shock (Operating) | 70Gs (2ms) |
| Shock (Non-Operating) | 250Gs (2ms) |
| Sector Size | 512e / 4Kn (user selectable) |
| Weight | 730g (nominal) |
At 12TB, the Seagate ST12000NM000J 12TB 3.5-inch SATA Enterprise HDD suits enterprise data-center storage tiers — all-flash arrays, hyperconverged storage pools (vSAN, Ceph), database backends, and high-throughput backup repositories. The SATA 6Gb/s interface is supported by major server platforms.
Key specifications for the Seagate ST12000NM000J 12TB 3.5-inch SATA Enterprise HDD: capacity 12TB; form factor 3.5-inch; interface SATA 6Gb/s; new condition; capacity 12TB; form factor 3.5-inch; interface SATA 6Gb/s; drive class Enterprise HDD; typical spindle speed 7200 RPM; use case Servers, NAS, JBOD, and storage arrays. Manufacturer part number ST12000NM000J. For the full datasheet with electrical, environmental, and compliance details, contact our pre-sales engineering team.
The Seagate ST12000NM000J 12TB 3.5-inch SATA Enterprise HDD uses a SATA 6Gb/s interface in a 3.5-inch form factor. It's compatible with server platforms that expose this interface — typical deployments include Dell PowerEdge, HPE ProLiant, Lenovo ThinkSystem, and Supermicro SuperServer chassis. For specific vendor part-number compatibility, our team validates against the manufacturer support matrix.
