Description
HGST Ultrastar DC HC520 12TB SAS 12Gb/s Enterprise Hard Drive – HUH721212AL4200
12TB 3.5-Inch 7200RPM Helium-Filled Data Center HDD
The HGST Ultrastar DC HC520 (Model: HUH721212AL4200 / 0F29560) is a 12TB enterprise-class hard drive engineered for hyperscale data centers, cloud storage platforms, and mission-critical enterprise environments.
Featuring a SAS 12Gb/s interface, helium-sealed design, and a 2.5 million hour MTBF rating, this drive delivers exceptional reliability, storage density, and power efficiency for large-scale storage infrastructures.
Important Compatibility Notice
This is a SAS interface drive and is NOT compatible with standard desktop PCs.
It requires a SAS controller or SAS-compatible server backplane.
This specific model uses 4Kn (4K native) sector formatting, which may not be supported by legacy systems.
Key Features
12TB Storage Capacity
SAS 12Gb/s Interface
7200 RPM Spindle Speed
3.5-Inch Form Factor
Helium-Sealed Design
4Kn Native Sector Format
2.5 Million Hours MTBF
5-Year Limited Manufacturer Warranty
Enterprise-Grade Reliability
Designed for 24×7 operation, the HC520 provides high capacity per watt, reduced vibration, and lower operating temperatures thanks to its helium-filled architecture. It is optimized for environments where reliability and performance are critical.
Optimized for Hyperscale & Cloud Storage
Ideal for:
Cloud and hyperscale data centers
Massive scale-out (MSO) environments
Distributed file systems
Object storage platforms (Ceph, OpenStack Swift)
Hadoop and big data analytics
Centralized video surveillance systems
Enterprise backup and archival storage
Power Efficient & Cost Effective
The helium-weld design enables higher storage density while reducing power consumption, helping lower total cost of ownership (TCO) in large-scale deployments.
Technical Specifications
Brand
HGST (Western Digital Ultrastar Series)
Model
HUH721212AL4200
Capacity
12TB
Interface
SAS 12Gb/s
Form Factor
3.5-Inch
Rotational Speed
7200 RPM
Sector Format
4Kn (4K Native)
MTBF
2,500,000 Hours
Installation Type
Internal
USD 