WD Ultrastar DC HC520 12TB Enterprise HDD WD-HC520-12TB
Brand: Western Digital | Category: Enterprise HDDs
SKU: WD-HC520-12TB | Part #: WD-HC520-12TB | MPN: WD-HC520-12TB
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About the WD Ultrastar DC HC520 12TB Enterprise HDD WD-HC520-12TB
SATA 6Gb/s, 3.5-inch form factor, 2.5M-hour MTBF: The Western Digital Ultrastar DC HC520 12TB enterprise HDD (WD-HC520-12TB) delivers reliable, high-capacity storage for data centre environments demanding long-term availability. Built on HelioSeal helium-sealed technology, this drive combines 12TB formatted capacity with robust mechanical engineering, making it ideal for storage architects and IT procurement teams building cost-effective bulk storage infrastructure.
The DC HC520 operates at 7200 RPM with a 512MB cache and supports workloads up to 550TB annually, translating to reliable performance in mixed-use data centre deployments. Its rotational vibration compensation (RV sensors) and rated shock tolerance (70G read, 40G write) ensure stability in dense server environments. Thermal operating range spans 0–60°C, accommodating typical climate-controlled facilities across the UAE and Gulf region. With active power consumption around 7.2W and aggressive sleep modes (0.6W), the Ultrastar DC HC520 optimises operational costs without sacrificing performance. Western Digital's enterprise heritage underpins this platform, offering proven longevity in 24/7 operations.
Typical Deployment Scenarios
- NAS and SAN backup repositories requiring 8–16 drive enclosures with predictable capacity planning
- Archival and cold-storage tiers in hybrid cloud environments spanning on-premises and hybrid infrastructure
- Video surveillance and media asset libraries demanding sequential throughput and sustained 550TB/year workload tolerance
- General-purpose data centre storage where drive density and cost per terabyte drive procurement decisions favour larger capacities
- Hyperscale storage clusters using commodity 3.5-inch SATA platters for distributed file systems
For enterprise procurement of the WD-HC520-12TB across UAE and GCC regions, contact Omnixon Global to request a formal quotation tailored to your deployment scale and timeline.
Technical Specifications
| Brand | Western Digital |
| Category | Enterprise HDDs |
| SKU | WD-HC520-12TB |
| Part Number | WD-HC520-12TB |
| Condition | New |
| Capacity | 12TB |
| Form Factor | 3.5" |
| Interface | SATA 6Gb/s |
| Speed | 7,200 RPM |
| Model Family | DC HC520 |
| Manufacturer Part Number | WD-HC520-12TB |
| Formatted Capacity | 12TB (12,000GB) |
| Form Factor | 3.5-inch |
| Interface | SATA 6Gb/s |
| Spindle Speed | 7200 RPM |
| Cache (Buffer) | 512MB |
| Areal Density Technology | HelioSeal helium-sealed platform |
| Sector Format | 512e / 4Kn |
| Annualized Workload Rating (AWR) | 550TB/year |
| MTBF | 2,500,000 hours |
| Operating Temperature | 0°C to 60°C |
| Rotational Vibration Compensation | Yes (RV sensors) |
| Operating Shock | 70G (2ms, read); 40G (2ms, write) |
| Non-Operating Shock | 250G (2ms) |
| Power Mode – Active (Typical) | ~7.2W |
| Power Mode – Standby / Sleep | ~4.6W / ~0.6W |
| Dimensions (H x W x D) | 26.1mm x 101.6mm x 147mm |
| Weight | 700g (approximate) |
Frequently Asked Questions about WD Ultrastar DC HC520 12TB Enterprise HDD WD-HC520-12TB
What does the WD Ultrastar DC HC520 12TB Enterprise HDD do?
the WD Ultrastar DC HC520 12TB Enterprise HDD suits enterprise data-center storage tiers — all-flash arrays, hyperconverged storage pools (vSAN, Ceph), database backends, and high-throughput backup repositories. It is supported by major server platforms.
What are the headline specs of the WD Ultrastar DC HC520 12TB Enterprise HDD?
Key specifications for the WD Ultrastar DC HC520 12TB Enterprise HDD: new condition; capacity 12TB; interface SATA 6Gb/s; form factor 3.5 inch; rpm 7200; cache 512MB; workload rating 550TB/year. Manufacturer part number WD-HC520-12TB. For the full datasheet with electrical, environmental, and compliance details, contact our pre-sales engineering team.