Which interface does the Ultrastar DC SN640 0TS1851 use?

: "The Ultrastar DC SN640 0TS1851 uses a PCIe 3.1 x4 interface and follows the NVMe protocol. It is listed under the U.2 NVMe PCIe 3.1 x4 2.5 inch category, indicating that it connects to NVMe capable backplanes or controllers that provide PCIe 3.1 x4 lane connectivity in enterprise servers and storage systems.

What form factor does the Ultrastar DC SN640 0TS1851 support?

This drive is a 2.5 inch U.2 NVMe SSD. The category description identifies it as part of the U.2 NVMe PCIe 3.1 x4 2.5 inch class, indicating it is intended for standard 2.5 inch enterprise drive bays that support U.2 NVMe connections, commonly found in modern data center and server platforms.

Is the Ultrastar DC SN640 0TS1851 suitable for enterprise environments?

Yes, the drive is explicitly classified under the product level Enterprise and as a 3.84 TB Enterprise SSD. This classification indicates it is intended for use in server, data center, and other business critical environments where enterprise grade NVMe storage is required, rather than for client or consumer systems.

How can I precisely identify this Ultrastar DC SN640 model when ordering?

You can identify this model by its SKU 0TS1851 and its full name Western Digital Ultrastar DC SN640 WUS4BB038D7P3Ez. The SKU 0TS1851, combined with the 3.84TB capacity and U.2 NVMe PCIe 3.1 x4 2.5 inch classification, helps ensure that procurement teams order and deploy the exact intended drive.

0TS1851 - Western Digital Ultrastar 3.84 TB U.2 (SFF-8639) NVMe 2.5 inch SSD

Name: 0TS1851 - Western Digital Ultrastar 3.84 TB U.2 (SFF-8639) NVMe 2.5 inch SSD
Brand: Western Digital
SKU: 0TS1851
Price: 1492 USD
Availability: InStock

0TS1851 - Western Digital Ultrastar 3.84 TB U.2 (SFF-8639) NVMe 2.5 inch SSD | US IT Hardware

Product overview

The Western Digital Ultrastar DC SN640 WUS4BB038D7P3Ez 0TS1851 is an enterprise solid state drive designed for data center and other demanding IT environments. As part of the Ultrastar DC SN640 family, it delivers 3.84 TB of storage capacity in a compact 2.5 inch U.2 form factor. The drive uses a PCIe 3.1 x4 interface, compliant with NVMe standards, to support modern server and storage platforms within enterprise infrastructures. Positioned within the U.2 NVMe PCIe 3.1 x4 2.5 inch, 3.84 TB Enterprise SSD category, it aligns with deployments that require consistent flash storage for primary data, virtualized workloads, or other business critical applications. The combination of U.2 connectivity and NVMe protocol simplifies integration into existing backplanes and chassis that support this interface. This model offers IT procurement teams a clearly defined enterprise level NVMe SSD option for standardized configurations and fleet deployments.

3.84TB enterprise solid state drive capacity
U.2 NVMe PCIe 3.1 x4 interface
2.5 inch form factor for enterprise bays
Western Digital Ultrastar DC SN640 series
Enterprise level SSD classification
Specific SKU identification as 0TS1851

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Refunds within 14 days and replacements within 30 days of delivery with an RMA (25% restocking fee on customer-initiated returns), and every part carries our Standard 30-Day Warranty - see our return policy or contact US IT Hardware.

Featuring

Product Type
Manufacturer part #	0TS1851
Brand	Western Digital
Condition	New
Model	WUS4BB038D7P3Ez
Bus Type	PCIe Gen 3.1 x4
Capacity	3.84 TB
Swappable	Yes
Drive Class	Enterprise mixed-use SSD
Drive Width	2.5 inch
Form Factor	2.5 inch
Product Line	Ultrastar

Best for

Data center servers
Suitable for data center servers that require 3.84TB of enterprise solid state storage using a U.2 NVMe PCIe 3.1 x4 2.5 inch form factor.
Virtualized hosts
Fits virtualized hosts that benefit from a 3.84TB enterprise SSD with U.2 NVMe PCIe 3.1 x4 connectivity for consistent flash based storage.
Enterprise storage arrays
Appropriate for enterprise storage arrays that are built around 2.5 inch U.2 NVMe PCIe 3.1 x4 SSD bays and require 3.84TB capacity per drive.
Standardized fleet builds
Useful for standardized fleet configurations where a 3.84TB, 2.5 inch, U.2 NVMe PCIe 3.1 x4 enterprise SSD is specified as the common storage option.
Primary application storage
Can be used for primary application storage when 3.84TB capacity and U.2 NVMe PCIe 3.1 x4 2.5 inch integration are required in enterprise systems.

Frequently asked questions

What is the storage capacity of the Western Digital Ultrastar DC SN640 0TS1851?

Details

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NVMe Enterprise & Data Center SSDs WD Ultrastar Enterprise Hard Drives 3.84TB Enterprise SSDs 2.5-inch Enterprise SSDs

Interface	U.2 (SFF-8639) NVMe PCI Express NVMe 3.1 x4
Connector Type	U.2 SFF-8639
Interface Standard	U.2 (SFF-8639) NVMe

Western Digital Ultrastar 3.84 TB U.2 (SFF-8639) NVMe 2.5 inch SSD