Western Digital DC SN861 2TB E1.S PCIe 5.0 x4 NVMe SSD

The Western Digital Ultrastar DC SN861 is an enterprise solid-state drive engineered for data center and hyperscale applications, utilizing the E1.S form factor. This internal SSD leverages the PCIe Gen5 x4 interface, enabling sequential read speeds up to 12100 MB/s and sequential write speeds of 3400 MB/s. This substantial throughput capacity supports demanding, I/O-intensive workloads, including large-scale cloud deployments and AI/Machine Learning processes.

Reliability is maintained through an operational MTBF rating of 2.5 million hours and a drive endurance rating of 1 DWPD (Drive Write Per Day). The design incorporates crucial data integrity features, including End-to-End Data Path Protection and Enhanced Power Loss Data Protection technology. Furthermore, system responsiveness is managed with low operational latencies, specifically 70 µs for read operations and 10 µs for write operations.

Security protocols include TCG Opal 2.0 hardware encryption, ensuring data is secured at the hardware level during storage. The drive operates within a 12W maximum power envelope and is physically compact, adhering to the standard E1.S dimensions suitable for dense server environments.

• Storage capacity of 1920 GB
• Interface utilizes PCIe Gen5 x4 lanes
• Form factor designed for enterprise E1.S slots
• Sequential reading speed up to 12100 MB/s
• Random reading performance reaches 1,550,000 IOPS
• Hardware encryption via TCG Opal 2.0
• MTBF rating of 2,500,000 hours
• Enhanced power loss data protection included