Western Digital · MPN: 0TS2526
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Overview

  • Engineered for minimal power consumption, optimizing efficiency and reducing operational costs without compromising performance
  • Achieve optimized solutions at low cost for your enterprise's mixed workloads with high-speed random read performance

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

SSD capacity3.84 TB
SSD form factorU.2
InterfacePCI Express 5.0
NVMeYes
NVMe version2.0
Component forServer/workstation
Hardware encryptionYes
Read speed13700 MB/s
Write speed7200 MB/s
Random read (4KB)3300000 IOPS
Random write (4KB)330000 IOPS
Read latency65 µs
Write latency8 µs
Uncorrectable Bit Error Rate (UBER)< 1 per 10^17 bits read
Drive writes per day (DWPD)1
Mean time between failures (MTBF)2500000 h

Power

Power consumption (idle)-5 W
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Weight & dimensions

Width69.8 mm
Depth100.4 mm
Height15 mm

General

Product familyUltrastar

Operational conditions

Operating temperature (T-T)0 - 70 °C
Storage temperature (T-T)-40 - 85 °C

Other features

Warranty period5 year(s)

Manuals & downloads

Delivery & returns

Delivery

  • FREE standard delivery on orders over £50, otherwise £4.95 (3–5 working days).
  • Express delivery £9.99 (1–3 working days) on selected products, UK mainland.
  • PlayStation and Arozzi products use a 5–7 working-day service.
  • Orders are processed within 24 hours, Monday to Friday excluding bank holidays. All deliveries must be signed for.

Returns

  • Changed your mind? Tell us within 14 days of receiving your item, then return it within a further 14 days, unused and in its original packaging. A minimum £9.99 collection fee applies.
  • Faulty or damaged on arrival? Contact us within 48 hours of delivery.
  • Custom-built PCs can only be returned if faulty. Opened headphones, earphones and AirPods can't be returned for hygiene reasons.

Full delivery information · Full returns policy