The Western Digital 18TB Ultrastar DC HC550 SATA HDD is an enterprise-class storage drive engineered for data centers, cloud infrastructure, and high-capacity servers that require exceptional reliability and performance. Powered by Energy-Assisted Magnetic Recording (EAMR) and HelioSeal® technology, it delivers industry-leading storage density, low power consumption, and long-term dependability for 24/7 operation.
With a high-speed 7200 RPM spindle and 512MB cache, the Ultrastar DC HC550 ensures exceptional sequential performance and data access speeds up to 269 MB/s. It supports massive workloads up to 550TB per year, making it ideal for large-scale applications including object storage, hyperscale environments, backup, and big data analytics.
Designed with enterprise-grade components, Rotational Vibration Safeguard (RVS), and Advanced Format (AF) technology, this drive ensures consistent reliability and efficiency in multi-drive racks. With a 2.5 million-hour MTBF and 5-year warranty, the Ultrastar DC HC550 stands as one of the most trusted solutions for mission-critical storage environments.
Main Features
- Massive 18TB Capacity: Ideal for hyperscale data centers and large storage arrays.
- EAMR Technology: Increases areal density for higher capacity and sustained reliability.
- HelioSeal® Technology: Reduces air resistance, vibration, and power usage for improved performance.
- High Performance: 7200 RPM speed with up to 269 MB/s sustained transfer rate.
- 512MB Cache: Provides faster data buffering and optimized throughput.
- Enterprise-Grade Reliability: Supports up to 550TB/year workload rate for continuous use.
- RVS & Advanced Format: Improves data integrity and operational stability in dense rack systems.
- Energy Efficient: Lower power consumption with HelioSeal® for cooler, quieter operation.
Specifications
- Model: Ultrastar DC HC550 (HUS726T18TALE6L4)
- Form Factor: 3.5 inch
- Interface: SATA 6Gb/s
- Capacity: 18TB
- Spindle Speed: 7200 RPM Class
- Cache: 512MB
- Recording Technology: EAMR (Energy-Assisted Magnetic Recording)
- Transfer Rate: Up to 269 MB/s
- Workload Rate: Up to 550TB per year
- Technology: HelioSeal® Design
- Sector Size: 512e / 4Kn Advanced Format
- MTBF: 2.5 million hours
- Vibration (Operating): 0.67G (5–500Hz)
- Vibration (Non-Operating): 1.04G (2–200Hz)
- Operating Temperature: 5°C to 60°C
- Non-Operating Temperature: -40°C to 70°C
- Power Consumption (Active): 6.0W typical
- Noise Level: 29 dBA (idle), 36 dBA (seek)
- Warranty: 5-year limited warranty
Package Includes
- 1 × Western Digital 18TB Ultrastar DC HC550 SATA Data Center Hard Drive
- 1 × Quick Installation Guide
- Warranty & Support Information
*Performance and reliability may vary depending on system configuration, workload, and environment. The Ultrastar DC HC550 is intended for enterprise and data center use and is not recommended for standard desktop applications.