Western Digital Ultrastar DC SN861 3840GB U.2 PCIe 5.0 x4 NVMe SSD

The Western Digital Ultrastar DC SN861 is a high-capacity solid-state drive engineered specifically for demanding enterprise and data center workloads. Utilizing the U.2 form factor and the PCIe Gen5 x4 interface, this drive facilitates a substantial increase in data throughput compared to previous generations. Sequential reading operations peak at 13,700 MB/s, while sequential write speeds achieve 7,200 MB/s. This performance profile is necessary for high-frequency data analytics, virtualization, and large-scale AI/ML processing environments.

This 3.84 TB unit maintains data integrity through specialized features required in critical environments. It incorporates End-to-End Data Protection and enhanced power loss protection technology to safeguard stored data during unexpected power disruptions. Reliability is quantified by an endurance rating of 1 Drive Write Per Day (DWPD) and a Mean Time Between Failures (MTBF) of 2.5 million hours. The device also supports robust data security management capabilities, including AES hardware encryption and TCG OPAL 2.01.

• Storage capacity: 3840 GB
• Interface type: PCIe Gen5 x4 NVMe 2.0
• Form factor: U.2
• Sequential read speed: 13700 MB/s
• Sequential write speed: 7200 MB/s
• Random read performance (100% span): 3,300,000 IOPS
• Endurance rating: 1 DWPD
• Mean time between failures (MTBF): 2,500,000 hours
• Hardware encryption support: TCG OPAL 2.01 and AES
• Includes enhanced power loss data protection