HUH721212AL520 – 12TB 7200 RPM SATA 6Gb/s 3.5-Inch Ultrastar Enterprise Hard Drive
The Western Digital Ultrastar HUH721212AL520 is a 12TB helium-sealed enterprise hard drive built for data-center and server storage deployments where sustained throughput and reliability matter. Aimed at system integrators, resellers, and infrastructure teams building bulk-capacity tiers, it fits workloads such as enterprise storage arrays, backup targets, and object storage. As a CMR-class 7200 RPM spinning drive, it serves the capacity tier that sits alongside SSDs rather than replacing them for latency-sensitive applications.
Key specifications (table)
| Parameter | Specification |
|---|---|
| Model | HUH721212AL520 |
| Series | Ultrastar (Western Digital enterprise line) |
| Capacity | 12 TB |
| Interface | SATA 6 Gb/s |
| Form Factor | 3.5-inch |
| Spindle Speed | 7200 RPM |
| Cache | 256 MB |
| MTBF | 2.5 million hours |
| Workload Rating | Up to 550 TB/year |
| Helium-Sealed Technology | Yes – enhances power efficiency and reduces heat |
| Power Consumption | Optimized for lower energy use in enterprise environments |
Good to know
- Confirm your chassis or server backplane supports 3.5-inch SATA drives and adequate airflow — helium-sealed drives have specific mounting and cooling guidance from the manufacturer.
- Within Western Digital’s portfolio, Ultrastar is the enterprise-class family, positioned above IronWolf (NAS) and SkyHawk (surveillance); the 550 TB/year workload rating reflects that heavier-duty design point.
- Verify the exact firmware and sector-format compatibility with your RAID controller or storage OS before ordering in volume, as enterprise SATA drives can behave differently from desktop models.
For tray and reel pricing, current stock by part number and date code, and volume discounts on bulk orders, request a bulk quotation.
The Western Digital Ultrastar HUH721212AL520 is a 12TB helium-sealed enterprise hard drive built for data-center and server storage deployments where sustained throughput and reliability matter. Aimed at system integrators, resellers, and infrastructure teams building bulk-capacity tiers, it fits workloads such as enterprise storage arrays, backup targets, and object storage. As a CMR-class 7200 RPM spinning drive, it serves the capacity tier that sits alongside SSDs rather than replacing them for latency-sensitive applications.
Key specifications (table)
| Parameter | Specification |
|---|---|
| Model | HUH721212AL520 |
| Series | Ultrastar (Western Digital enterprise line) |
| Capacity | 12 TB |
| Interface | SATA 6 Gb/s |
| Form Factor | 3.5-inch |
| Spindle Speed | 7200 RPM |
| Cache | 256 MB |
| MTBF | 2.5 million hours |
| Workload Rating | Up to 550 TB/year |
| Helium-Sealed Technology | Yes – enhances power efficiency and reduces heat |
| Power Consumption | Optimized for lower energy use in enterprise environments |
Good to know
- Confirm your chassis or server backplane supports 3.5-inch SATA drives and adequate airflow — helium-sealed drives have specific mounting and cooling guidance from the manufacturer.
- Within Western Digital’s portfolio, Ultrastar is the enterprise-class family, positioned above IronWolf (NAS) and SkyHawk (surveillance); the 550 TB/year workload rating reflects that heavier-duty design point.
- Verify the exact firmware and sector-format compatibility with your RAID controller or storage OS before ordering in volume, as enterprise SATA drives can behave differently from desktop models.
For tray and reel pricing, current stock by part number and date code, and volume discounts on bulk orders, request a bulk quotation.
