Western Digital Ultrastar DC HC550 18 TB Hard Drive - 3.5" Internal - SATA

Introducing the Western Digital Ultrastar DC HC550 18 TB, a purpose-built hard drive crafted for data centers, cloud services, and demanding enterprise workloads. This 3.5-inch internal SATA drive blends enormous capacity with robust reliability, designed to support continuous operation, large-scale archival, and high-demand data processing. With 18 terabytes of usable storage, it provides a scalable foundation for expanding datasets, backups, media libraries, and analytics workloads, while its enterprise-grade engineering helps you optimize your storage infrastructure for efficiency, resilience, and cost effectiveness. Built for 24/7 operation and heavy workloads, the Ultrastar DC HC550 is engineered to minimize downtime, maximize throughput, and extend the life of your data-center storage ecosystems.

• Massive 18 TB capacity to consolidate large datasets, long-term archives, backups, and media libraries in a single drive, reducing the need for frequent shelf expansion and tiered storage.
• Enterprise-class reliability and endurance designed for 24/7 workloads, with vibration tolerance and robust data protection features that help keep critical data accessible under demanding conditions.
• SATA 6 Gb/s interface for broad compatibility with mainstream servers, storage arrays, and data-center appliances, enabling seamless integration into existing infrastructures without requiring specialized interfaces.
• HelioSeal helium-sealed construction reduces internal turbulence and power usage while increasing areal density, contributing to higher capacity in a compact 3.5-inch form factor and lower operating temperatures.
• Optimized for mixed workloads—from sequential large-file transfers to random read/write activity—delivering consistent throughput, efficient caching, and predictable performance in archive, backup, and content-delivery scenarios.

Technical Details of Western Digital Ultrastar DC HC550 18 TB Hard Drive

• Capacity: 18 TB of storage for high-density data deployment in data centers, cloud storage, and enterprise environments.
• Form Factor: 3.5-inch internal drive designed for standard enterprise drive bays and storage enclosures.
• Interface: SATA 6 Gb/s, providing broad compatibility with a wide range of servers, storage controllers, and RAID configurations.
• Spindle Speed: 7200 RPM performance suitable for mixed workloads, offering a balance between throughput and power efficiency.
• Cache: High-capacity cache to accelerate data access, improve burst performance, and sustain steady throughput under heavy workloads.
• Technology: HelioSeal helium-sealed design to reduce roadway friction and improve areal density, helping to maximize capacity in a reliable enterprise build.
• Reliability and Durability: Engineered for continuous operation in data-center environments with features to protect data integrity and withstand typical enterprise deployment conditions.
• Security and Data Integrity: Built with enterprise-grade error detection and correction mechanisms to support reliable operation in large-scale storage deployments.

How to install Western Digital Ultrastar DC HC550 18 TB

Installing the Ultrastar DC HC550 is straightforward in standard 3.5-inch server bays and storage enclosures. Follow these general steps to integrate the drive into your storage environment, ensuring proper alignment, cabling, and post-install configuration for optimal operation.

• Power down the server or storage array and unplug all power sources before handling the drive to prevent electrostatic discharge and hardware damage.
• Remove the drive cage or tray from the chassis, ensuring you have access to the 3.5-inch slot and the backplane interface for SATA connections.
• Gently insert the Ultrastar DC HC550 into the drive bay, aligning the connectors with the backplane and securing the drive with the mounting screws or latch as required by your chassis.
• Connect the SATA data and power cables to the drive and the corresponding backplane or controller, making sure cables are firmly seated and routed to avoid interference with fans or other components.
• Power on the system and enter the server or storage controller’s management interface. Initialize the new drive if required, assign it to an existing pool or array, and configure any desired RAID or storage tier settings.
• Run a quick surface scan and SMART checks to verify drive health and integrity. Monitor the drive during initial operation to confirm stable performance and appropriate temperature levels.
• Label and document the drive in your asset-management system, including serial number, firmware version, and its role within the storage architecture for future maintenance and replacements.
• Update firmware if a newer version is available from Western Digital, following the manufacturer’s instructions to ensure compatibility with your controller and optimal performance.
• Plan for ongoing monitoring: establish alerts for temperature, workload, and error rates, and integrate the drive into your data-protection strategy with regular backups and health checks.

Frequently asked questions

• What workloads is the Ultrastar DC HC550 best suited for? It is designed for data-center primary storage, backups, archiving, and content libraries where large capacity, reliability, and steady throughput are essential. It can handle mixed workloads typical of cloud storage, media repositories, and analytics pipelines.
• What makes the DC HC550 different from consumer drives? The Ultrastar DC HC550 is built for enterprise use with enhanced reliability, vibration tolerance, and continuous operation under 24/7 workloads. It includes features and firmware optimized for data-center environments and RAID configurations, rather than consumer-focused performance or power-saving features.
• Is HelioSeal technology important for this drive? Yes. HelioSeal helium-sealed designs reduce internal air resistance, lower drive operating temperatures, and enable higher areal density. This helps achieve larger capacities in a 3.5-inch form factor while maintaining energy efficiency and reliability critical for data-center deployments.
• What interfaces does this drive support? The Ultrastar DC HC550 uses a SATA 6 Gb/s interface, which is compatible with a wide range of servers, storage controllers, and RAID systems, making it a versatile option for existing data-center infrastructures.
• How should I configure this drive in a storage system? Configure it in the appropriate RAID or storage pool based on your workload. For hot and cold data, consider tiered storage strategies and ensure you have monitoring enabled for SMART metrics, drive health, and temperature. Regular firmware updates and drivetrain maintenance are recommended to maximize reliability.
• What warranty and support does Western Digital provide for this drive? Enterprise drives typically come with a warranty that aligns with business or data-center deployment. For exact terms, coverage windows, and support options, refer to the official product listing or your authorized WD distributor.