0TS1854 | Ultrastar DC SN640

Model: WUS4CB080D7P3E4 (0TS1854)
Capacity: 800 GB (2 DW/D)
Interface: U.2/SFF-8639 (PCIe 3.1 x4), NVMe 1.3c
Sequential Read/Write: Up to 3310 MB/s / 1180 MB/s
Random Read/Write IOPS: 414K / 108K (4KB)
Dimensions: 100 x 70 x 7 mm
Weight: 95 g

Description
Reviews (1)

Ultrastar DC SN640

High-Performance NVMe Storage

Delivers up to 3310 MB/s sequential read and 108K 4K random write IOPS with PCIe NVMe 3.1 x4 interface, optimized for low-latency mixed workloads in virtualization, OLTP, NoSQL, and cloud applications.

Workload Flexibility

Available in 2 DW/D endurance class with 800GB capacity, featuring tunable endurance for seasonal burst workloads, ideal for boot, caching, or primary storage in data centers.

Enterprise Reliability

Built with 96-Layer BiCS4 3D TLC NAND, NVMe 1.3 controller, power-loss protection, TCG Ruby encryption, and a 5-year warranty, ensuring data integrity and security for critical applications.

Western Digital Ultrastar DC SN640: All Features

Capacity	800 GB (2 DW/D), 960 GB–7.68 TB (0.8 DW/D)
Interface	U.2/SFF-8639 (PCIe 3.1 x4), NVMe 1.3c
Performance	Up to 3310 MB/s read, 414K/108K 4K read/write IOPS
Endurance	2.92 PBW (2 DW/D), tunable for 0.8 DW/D SKUs
Data Protection	256-bit AES, TCG Ruby, power-loss protection

Western Digital Ultrastar DC SN640: All Specifications

Capacity	800 GB (2 DW/D), 960 GB–7.68 TB (0.8 DW/D)
Interface	U.2/SFF-8639 (PCIe 3.1 x4), NVMe 1.3c
Form Factor	2.5" (7 mm)
Sequential Read Performance	Up to 3310 MB/s
Sequential Write Performance	Up to 1180 MB/s
Random Read IOPS (4KB)	Up to 414K
Random Write IOPS (4KB)	Up to 108K
NAND Type	96-Layer BiCS4 3D TLC NAND (Kioxia)
Controller	Western Digital NVMe 1.3
Endurance (TBW)	2.92 PB (2 DW/D), varies by capacity for 0.8 DW/D
MTBF	2 million hours
Data Protection	256-bit AES, TCG Ruby, power-loss protection, end-to-end data path protection
Power Consumption	12 W (active), 5 W (idle)
Operating Temperature	0°C to 70°C
Non-Operating Temperature	-40°C to 85°C
Dimensions (LxWxH)	100 x 70 x 7 mm
Weight	95 g
Compatibility	Cloud, hyperscale, and enterprise storage systems
Certifications	RoHS
Warranty	5-year limited warranty
Package Contents	SSD, quick start guide