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Description & Specifications
The Western Digital Ultrastar® DC HA340 12TB is the highest-capacity model in the HA340 series, built for enterprise storage systems that require large volumes of data with consistent performance and durability. Leveraging CMR technology and a 7200 RPM spindle, it delivers both speed and capacity for mission-critical workloads.
Ideal for hyperscale deployments, data lakes, cloud storage, and backup/archive environments, this 12TB drive offers energy efficiency with high density and is engineered for 24x7 reliability. It delivers a 550TB/year workload rating and is backed by a 5-year limited warranty.
- 512MB cache and 267MB/s transfer rates for high-throughput data movement
- 2 million-hour MTBF for exceptional dependability
- Air-based architecture for improved efficiency
- Supports RAID and enterprise NAS environments
If your data center or backup system needs uncompromising capacity with trusted performance, the 12TB Ultrastar DC HA340 is the drive to count on.
Specifications – 12TB Ultrastar DC HA340
| Attribute | Specification |
|---|---|
| Model Number | WUS721212BLE604 / WUS721212BLE6L4 |
| Form Factor | 3.5-inch |
| Recording Technology | CMR (Conventional Magnetic Recording) |
| Drive Technology | Air |
| Interface | SATA 6 Gb/s |
| Sector Format | 512e |
| Areal Density | 1022 Gbits/in² |
| RoHS Compliant | Yes |
| Data Cache | 512 MB |
| Rotational Speed | 7200 RPM |
| Average Latency | 4.16 ms |
| Internal Transfer Rate | 6 Gb/s (max) |
| Sustained Transfer Rate | 267 MB/s (max) / 255 MiB/s |
| Random Read / Write IOPS | 150 / 465 (4K, QD16) |
| MTBF | 2,000,000 hours (projected) |
| Annualized Failure Rate (AFR) | 0.44% |
| Load/Unload Cycles | 600,000 |
| Non-Recoverable Error Rate | <1 in 1015 bits read |
| Availability | 24x7 |
| Workload Rating | Up to 550TB/year |
| Warranty | 5 years |
| Power - Operating (Typical) | 9.2 W |
| Power - Idle | 8.4 W |
| Power Efficiency at Idle | 0.70 W/TB |
| Shock - Operating | 70G (2ms) |
| Shock - Non-Operating | 250G (2ms) |
| Temperature - Operating | 5°C to 60°C |
| Temperature - Non-Operating | -40°C to 70°C |
| Vibration - Operating | 0.67G RMS (5–500 Hz) |
| Vibration - Non-Operating | 1.04G RMS (2–200 Hz) |
| Acoustic (Idle / Operating) | 3.4 / 3.9 Bels |
| Dimensions (H x L x W) | 1.028 in x 5.787 in x 4.0 in (26.1 mm x 147 mm x 101.6 mm) |
| Weight | 1.65 lb (750 g) |
| Country of Assembly | Thailand |
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