Western Digital Ultrastar DC SN861 6.4 TB Enterprise SSD, U.2, PCIe 5.0 NVMe

The Western Digital Ultrastar DC SN861 6.4 TB Enterprise SSD is a high-performance storage solution engineered for demanding server and workstation environments. Utilizing the advanced PCIe 5.0 NVMe interface, this drive delivers exceptional data throughput with read speeds up to 13700 MB/s and write speeds up to 7500 MB/s. Designed for mission-critical applications, it provides the reliability, low latency, and high IOPS required for modern data centers and intensive computing tasks.

Advantages

This enterprise-grade SSD offers significant benefits for data-heavy operations by maximizing performance per watt, which helps reduce overall operational costs. Its architecture is specifically optimized for AI and machine learning workloads, providing the high bandwidth and low latency necessary for rapid data processing. The drive supports modern standards including NVMe 2.0 and OCP 2.0, ensuring compatibility with future-ready data infrastructures. Furthermore, it incorporates robust enterprise features such as hardware encryption, power loss protection, and end-to-end data path protection to maintain data integrity and security under heavy, mixed-workload conditions.

Suitable for

• AI and machine learning model training
• Hyperscale and cloud data center storage
• High-performance computing workstations
• Mission-critical enterprise database management
• Real-time data analytics and processing

This drive may not be suitable for standard consumer desktop computers or laptops, as it requires a U.2 interface and PCIe 5.0 support, which are typically found only in professional server-grade hardware. Additionally, it is not intended for general-purpose home storage where the high cost and specialized power requirements of enterprise-grade equipment are not justified.

Key specifications

• Capacity: 6.4 TB
• Form factor: U.2
• Interface: PCIe 5.0 NVMe
• Read speed: Up to 13700 MB/s
• Write speed: Up to 7500 MB/s
• Support: NVMe 2.0 and OCP 2.0
• Security: Hardware encryption

To use the Western Digital Ultrastar DC SN861, ensure your server or workstation motherboard supports the U.2 form factor and the PCIe 5.0 NVMe protocol. The drive should be installed into a compatible drive bay with adequate airflow to maintain optimal operating temperatures. Once physically installed, the operating system or RAID controller will recognize the drive, allowing for initialization and formatting according to your specific storage configuration requirements.

What to consider before purchase

• Verify that your server hardware supports U.2 connections and PCIe 5.0 lanes.
• Ensure your system's power supply and cooling capacity meet the requirements for enterprise-grade NVMe drives.
• Check for compatibility with your existing storage management software and NVMe drivers.

For optimal performance and longevity, ensure that your system firmware is updated to the latest version and that the drive is utilized within a well-ventilated server chassis to maintain consistent thermal performance during intensive data operations.