Western Digital Ultrastar DC HC550 18 TB SAS Internal Hard Drive

The Western Digital Ultrastar DC HC550 18 TB hard drive is purpose-built for data centers that demand maximum storage density, consistent performance, and enterprise-grade reliability. With a colossal 18 terabytes of capacity in a single 3.5-inch internal form factor, this SAS drive is designed to streamline scaling, reduce hardware footprint, and lower total cost of ownership for heavy workloads like backups, archiving, virtualization, media libraries, and analytics. Built for continuous operation in demanding data-center environments, the DC HC550 combines high-capacity storage with robust reliability features to help IT teams meet stringent service levels while keeping power and cooling under control. This drive is optimized for SAS 12 Gb/s backplanes and RAID configurations, making it an ideal upgrade or expansion for storage shelves, SAN arrays, and modern data centers focused on efficiency and resilience.

• High-capacity density for data centers: 18 TB in a single 3.5-inch drive dramatically increases usable storage per rack, reducing the number of spindles required for large-scale archives, backups, and virtualized storage pools while supporting scalable growth without expanding footprint.
• SAS 12 Gb/s interface for enterprise data workloads: The 12 Gb/s Serial Attached SCSI interface is designed to deliver solid sequential throughput and dependable performance for mixed workloads, backplanes, and RAID controllers common in modern data-center configurations.
• Enterprise-grade reliability and endurance: Built to run in demanding 24x7 environments, this Ultrastar drive emphasizes long-term reliability, data integrity, and consistent performance under sustained workloads typical of backup, archive, and large-scale virtualization projects.
• Optimized for data-center efficiency and cost of ownership: Designed with energy-conscious operation and thermal management in mind, the Ultrastar DC HC550 helps data centers lower power consumption per TB and manage cooling needs more effectively as capacity scales.
• Seamless integration with existing infrastructure: Compatible with standard enterprise backplanes, RAID controllers, and SAN solutions, enabling straightforward upgrades to expand capacity while preserving current data workflows, security policies, and management tools.

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

• Capacity: 18 TB
• Form Factor: 3.5-inch Internal Hard Drive
• Interface: SAS 12 Gb/s
• Drive Type: Enterprise-class hard disk drive (HDD)
• Warranty and support: Enterprise-grade options available; terms vary by region and reseller

How to install Western Digital Ultrastar DC HC550 18 TB SAS Internal Hard Drive

• Power down the server or storage system and locate an available 3.5-inch drive bay in the backplane or drive enclosure.
• Remove the drive tray or sled if required, then align the Ultrastar DC HC550 with the backplane connectors and slide it into the bay until it seats securely.
• Secure the drive with the appropriate screws or latching mechanism provided by the chassis, ensuring the drive is firmly mounted to prevent vibration during operation.
• Connect the SAS data cable and power connector from the backplane or RAID controller to the drive’s interface. Verify snug, proper connections for reliable data transfer.
• Power the system back on, enter the RAID controller or server management utility, and initialize the new drive as part of your storage pool or array. Follow your standard provisioning workflow to format, allocate, and assign drive health monitoring and SMART alerts as needed.
• Monitor the drive during the initial operation period for thermal behavior, performance metrics, and health indicators, updating firmware if required and aligning with your organization’s data protection and backup strategies.

Frequently asked questions

• What workloads is the Ultrastar DC HC550 best suited for?

The Ultrastar DC HC550 is engineered for enterprise-scale storage needs, including backups, long-term archival, virtualization storage, media libraries, and large-scale databases. It offers the capacity, reliability, and SAS connectivity that data centers rely on for sustained, high-volume data growth.

• Is this drive hot-swappable in typical data-center backplanes?

Yes, the Ultrastar DC HC550 is designed for use in enterprise environments with backplanes and RAID controllers that support 12 Gb/s SAS interfaces. In standard rack deployments, it supports hot-swappable configurations when the chassis and backplane are designed for hot replacement.

• What kind of reliability can I expect from this drive?

As an enterprise-class HDD, the Ultrastar DC HC550 emphasizes reliability and data integrity for continuous operation. It is built to handle heavy workloads with steady performance over time and works with management tools that monitor health, SMART data, and drive efficiency to help minimize risk of data loss.

• How does the 18 TB capacity impact total cost of ownership?

Higher capacity per drive reduces the number of disks needed to meet storage goals, which can lower space, power, and cooling demands in the data center. Although initial costs may be higher per drive, the overall storage density and reduced management overhead can contribute to a favorable total cost of ownership when deployed at scale.

• What systems are compatible with this drive?

The DC HC550 is compatible with standard 3.5-inch enterprise backplanes and SAS controllers that support 12 Gb/s SAS. It integrates into RAID arrays, SAN solutions, and other enterprise storage architectures commonly found in data centers and server rooms.

• Do I need special firmware to use this drive in my array?

Firmware requirements vary by RAID controller and system configuration. It is recommended to verify compatibility with your controller’s vendor guidance and update to the latest enterprise firmware provided by Western Digital or your system integrator to ensure optimal performance and reliability.