0TS1874 | Ultrastar DC SN840

Model: 0TS1874
Capacity: 1.6TB
Interface: PCIe 3.1 x4 (dual-port, NVMe 1.3)
Sequential Read/Write: Up to 3470 MB/s / 3300 MB/s
Compatibility: HPC servers, external storage arrays, Linux, Windows Server, VMware
Dimensions: 15 x 69.85 x 100.45 mm
Weight: ~150 g (typical)

Description
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0TS1874 | Ultrastar DC SN840

High-Performance NVMe

The Western Digital Ultrastar DC SN840 (0TS1874) is a 1.6TB NVMe SSD with a PCIe 3.1 x4 (dual-port) interface, delivering sequential read/write speeds up to 3470/3300 MB/s and mixed random IOPS up to 503K (70/30 read/write). Powered by a Western Digital in-house controller and 96-layer 3D TLC NAND, it’s optimized for low-latency, high-performance workloads like AI, ML, and real-time analytics.

Enterprise-Grade Reliability

Designed for HPC servers and external storage arrays, the DC SN840 features a dual-port architecture for high availability, a 2.5M-hour MTBF, and a 0.35% AFR. It offers 3 DW/D endurance for mixed workloads and includes Secure Erase (SE), Instant Secure Erase (ISE), and TCG encryption with FIPS 140-2 validation (forthcoming).

Scalable Storage Solutions

The DC SN840 supports a U.2 15mm form factor, ideal for data centers, with capacities up to 15.36TB in the series. It’s suited for cloud computing, OLTP/OLAP databases, and virtualization, offering robust performance for mission-critical applications with a 5-year limited warranty.

Western Digital Ultrastar DC SN840 0TS1874: All Features

Capacity	1.6TB
Interface	PCIe 3.1 x4 (dual-port, NVMe 1.3)
Performance	Up to 3470 MB/s read, 3300 MB/s write, 503K IOPS (70/30 R/W)
Endurance	3 DW/D (8,760 TBW)
Reliability	2.5M hours MTBF, 0.35% AFR
Security	SE, ISE, TCG encryption, FIPS 140-2 (forthcoming)
Compatibility	HPC servers, external storage arrays, Linux, Windows Server, VMware

Western Digital Ultrastar DC SN840 0TS1874: All Specifications

Model	0TS1874
Capacity	1.6TB (series up to 15.36TB)
Interface	PCIe 3.1 x4 (dual-port, NVMe 1.3)
Form Factor	U.2 2.5" (15mm)
NAND Type	96-layer 3D TLC NAND
Sequential Read Performance	Up to 3470 MB/s (128KiB)
Sequential Write Performance	Up to 3300 MB/s (128KiB)
Random Read IOPS	Up to 780,000 (4KiB)
Random Write IOPS	Up to 257,000 (4KiB)
Mixed Random Read/Write IOPS	Up to 503,000 (70% read/30% write, 4KiB)
Read Latency	141 μs
Endurance	3 DW/D (8,760 TBW)
Reliability	Unrecoverable Bit Error Rate (UBER) 1 in 10^17, MTBF 2.5M hours, AFR 0.35%
Security	Secure Erase (SE), Instant Secure Erase (ISE), TCG encryption, FIPS 140-2 (forthcoming)
Power Consumption	18W (operating, max average), 6W (idle)
Power Requirement	3.3V (aux), 12V (DC, ±5%)
Operating Temperature	0°C to 70°C (case)
Non-Operating Temperature	-40°C to 85°C
Dimensions (HxWxD)	15 x 69.85 x 100.45 mm
Weight	Not specified (~150 g, typical for U.2 SSDs)
System Compatibility	HPC servers, external storage arrays, Linux, Windows Server, VMware, Hyper-V
Certifications	FCC, CE, BSMI, VCCI, RCM
Warranty	5-year limited
Package Contents	SSD, quick start guide