Redefining the limits for high-performance storage
Be ready for the future of mission critical workloads with the Western Digital Ultrastar DC SN861. The latest Western Digital SSD with a cutting-edge PCIe Gen5 enterprise-class speeds, the Ultrastar DC SN861 offers exceptional performance and multiple capacities up to 7.68TB1 options. With high random read speeds and low power consumption, the DC SN861 is optimized for compute-intensive AI and machine learning applications, ensuring superior read/write performance, extremely low latency, and maximize IOPs/Watt. The DC SN861 also provides a rich feature set including NVMe™ 2.02 and OCP 2.0 support, 1 & 3 DWPD2, and a 5-year limited warranty3, making it the ideal solution for hyperscale, cloud, and enterprise data centers.
Ready for the Demands of AI Workloads
Designed to handle compute-intensive AI and machine learning applications which require high bandwidths and low latencies.
Superior Performance and Capacity
Experience future-ready PCIe Gen5 read/write speeds with capacities up to 7.68TB1.
Designed for Power Efficiency
Architected to provide heightened performance per watt, optimizing power efficiency and reducing operational costs.
Outstanding Mixed Workload Performance
High-speed random reads provide enhanced solutions at low cost for your enterprise.
Optimized for Quality of Service (QoS)
Reduce latency during mission-critical workloads, delivering consistent Quality of Service (QoS) for your applications, even under heavy workloads.
Rich Enterprise Features
Benefit from enterprise-class features such as Power Loss Protection, End-to-End Data Path Protection, and TCG security and encryption, helping ensure data integrity and security
Future-Ready Data Infrastructure
Designed to support NVMe™ 2.02, and NVMe™ MI 1.2c, along with Flexible Data Placement (FDP)4 and OCP 2.0 supportive, for enhanced scalability and efficiency.
Specifications
| Features |
| Drive writes per day (DWPD) |
1 |
| Mean time between failures (MTBF) |
2500000 h |
| Uncorrectable Bit Error Rate (UBER) |
< 1 per 10^17 bits read |
| Write latency |
8 µs |
| Read latency |
65 µs |
| Random write (4KB) |
165000 IOPS |
| Random read (4KB) |
2100000 IOPS |
| Write speed |
3600 MB/s |
| Read speed |
13700 MB/s |
| Hardware encryption |
Yes |
| Component for |
Server/workstation |
| NVMe version |
2.0 |
| NVMe |
Yes |
| Interface |
PCI Express 5.0 |
| SSD form factor |
U.2 |
| SSD capacity |
1.92 TB |
| Power |
| Power consumption (idle) |
-5 W |
| Weight & dimensions |
| Height |
0.591" (15 mm) |
| Depth |
3.95" (100.4 mm) |
| Width |
2.75" (69.8 mm) |
| Operational conditions |
| Storage temperature (T-T) |
-40 - 85 °C |
| Operating temperature (T-T) |
0 - 70 °C |
| Other features |
| Operating temperature (T-T) |
0 - 70 °C |
| Warranty period |
5 year(s) |
