3.5" HDD Western Digital Ultrastar DC HC555 16 TB SATA III 7200 RPM 512 MB cache

Western Digital Ultrastar DC HC555 is a 3.5" enterprise-class hard drive with 16 TB capacity, SATA III interface, 7200 RPM spindle speed and 512 MB cache. Built for continuous 24/7 operation, the drive provides an average latency of 4.16 ms and is rated to operate in ambient temperatures from 5 to 60 °C. It is intended for use in servers, NAS systems and large-scale storage environments that require high capacity and reliable sustained performance.

Advantages

The Ultrastar DC HC555 combines high storage density with a 7200 RPM spindle and a 512 MB buffer to deliver stable throughput for heavy workloads. Enterprise-grade design supports round‑the‑clock operation and a wide operating temperature range. The SATA III interface ensures broad compatibility with existing server and NAS platforms.

Suitable for

• Enterprise servers and data centers
• Network-attached storage (NAS) for multi-bay systems
• Backup and archival storage with high capacity needs
• Applications requiring continuous 24/7 availability

Key specifications

• Form factor: 3.5 inch
• Capacity: 16 TB
• Interface: Serial ATA III (SATA 6 Gb/s)
• Spindle speed: 7200 RPM
• Cache: 512 MB
• Average latency: 4.16 ms
• Designed for continuous 24/7 operation
• Operating temperature range: 5–60 °C
• Weight: 679 g

How to use

Install the 3.5" Ultrastar DC HC555 into a compatible bay on a server or NAS that supports SATA III connections. Secure the drive according to the chassis or tray instructions, connect power and SATA cables, then initialize and format the drive in the operating system or RAID controller as required. Monitor drive health via the system management tools or SMART monitoring utilities to ensure continued reliability.

Usage recommendations

Use this drive in systems with adequate cooling and power delivery, maintain regular backups for critical data, and monitor SMART attributes for early detection of potential failures. For best results in multi-drive arrays, follow manufacturer guidelines for RAID configuration and drive population.