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0TS1855 Western Digital 1.6TB Ultrastar DC SN640 2.5 inch TLC PCIe SSD

0TS1855 Overview

The Western Digital 0TS1855 Ultrastar DC SN640 is a 1.6TB enterprise-grade NVMe Solid State Drive designed for high-performance, reliable storage in data center and server environments. Utilizing a PCIe interface in a 2.5-inch form factor, it provides low-latency, high-speed data access, making it ideal for mixed-use workloads such as virtualization, databases, content delivery, and analytics.Built with Triple-Level Cell (TLC) NAND flash, the Ultrastar DC SN640 balances performance, endurance, and capacity, delivering reliable operation for sustained enterprise workloads. Its 2.5-inch design supports high-density deployment in servers and storage arrays, and it is compatible with hot-swap configurations for quick maintenance and minimal downtime.

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SKU:0TS1855
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0TS1855 Technical Specifications

Western Digital 1.6TB Ultrastar DC SN640 2.5 inch TLC PCIe SSD

Part Number: 0TS1855
Brand: Western Digital
Model: Ultrastar DC SN640 1.6TB NVMe SSD
Form Factor: 2.5-inch U.2
Interface: PCIe 3.0 x4 NVMe
Capacity: 1.6TB
NAND Type: 3D TLC
Usage Type: Mixed Use / Enterprise
Read Speed: Up to 3,200 MB/s
Write Speed: Up to 2,100 MB/s
Read IOPS: Up to 500K
Write IOPS: Up to 400K
Endurance: ~3 DWPD
MTBF: 2M hours
Temp Range: 0°C–70°C
Encryption: AES 256-bit SED

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