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Western Digital Ultrastar DC SN861 1.6 TB U.2 NVMe SSD

Western Digital

Western Digital 0TS2534 1.6 TB U.2 NVMe internal SSD

SKU CH-E9ZR-QPPA3 MPN 0TS2534

A 1.6 TB U.2 NVMe drive built for enterprise mixed workloads with high random-read speed and low power draw

  • Form FactorU.2
  • Capacity1.6 TB
  • InterfacePCIe NVMe
  • Memory ComponentsTLC
  • ProtocolNVMe
  • FeaturesHigh-speed random read performance for enterprise mixed work
  • High-speed random reads accelerate mixed enterprise workloads
  • PCIe NVMe 5.0 x4 interface delivers low-latency data transfer
  • 28 % over-provisioning sustains consistent write endurance
  • TCG Opal encryption protects data at rest
  • 15 mm U.2 form factor fits dense server bays

Enterprise U.2 NVMe SSD

The Western Digital Ultrastar DC SN861 1.6 TB drive fits a U.2 bay and connects through a PCIe NVMe 5.0 x4 link. It uses TLC memory components and is built for mixed enterprise workloads that demand high random read speed. The 15 mm Z-height and 28 % over-provisioning support sustained performance in dense server chassis.

Suited for AI training and hyperscale clouds

This drive targets AI model training, inference, machine learning and deep learning clusters as well as hyperscale cloud and enterprise datacentres. It also fits compute-intensive, high-CPU, high-GPU and HPC tasks plus big-data analytics and predictive modelling. Workloads that are purely sequential or require extreme write endurance beyond the rated mixed-use profile should evaluate alternative models.

1.6 TB capacity with 28 % over-provisioning

The 1.6 TB usable space and 28 % reserved area give headroom for mixed read-write traffic typical of database and analytics jobs. Random read throughput stays consistent while the over-provisioning absorbs write amplification. When sustained write volume exceeds the mixed-use rating the drive will throttle to protect endurance.

Points forts

  • High-speed random reads accelerate mixed enterprise workloads
  • PCIe NVMe 5.0 x4 interface delivers low-latency data transfer
  • 28 % over-provisioning sustains consistent write endurance
  • TCG Opal encryption protects data at rest
  • 15 mm U.2 form factor fits dense server bays

Caractéristiques

Form FactorU.2
Capacity1.6 TB
InterfacePCIe NVMe
Memory ComponentsTLC
ProtocolNVMe
BrandWestern Digital
SeriesDC SN861
ModelDC SN861
Part Number0TS2534
FeaturesHigh-speed random read performance for enterprise mixed workloads; engineered for minimal power consumption
Poids d’expédition0.45 kg
Dimensions du colis25 × 25 × 25 mm

Questions sur cet article

Will this U.2 drive fit in my server's 15 mm bay?

The 15 mm height matches standard SFF U.2 bays, so it installs directly without an adapter.

Does the 28 % over-provisioning help with sustained mixed workloads?

Yes, the extra reserved space improves write consistency and endurance for mixed read or write patterns.

Is TCG Opal encryption active out of the box?

The drive supports TCG Opal; encryption must be enabled and managed through your host software or BIOS.

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