Which interface does the Ultrastar DC SN640 0TS2391 use?

: "This Ultrastar DC SN640 7.68TB SSD is categorized as a U.2 NVMe PCIe Gen 3.1 x4 device. It is designed to connect to U.2 NVMe backplanes using a PCIe Gen 3.1 x4 electrical interface, making it appropriate for servers and storage systems that support U.2 NVMe PCIe Gen 3.1 x4 SSDs in a 2.5 inch form factor.

What form factor is the Western Digital Ultrastar DC SN640 WUS4BB076D7P3E1?

The Ultrastar DC SN640 WUS4BB076D7P3E1 associated with SKU 0TS2391 is categorized as a 2.5 inch U.2 NVMe PCIe Gen 3.1 x4 enterprise SSD. This 2.5 inch form factor allows it to fit standard U.2 bays in compatible enterprise servers and storage arrays designed for U.2 NVMe SSDs.

What endurance class does this 7.68TB Ultrastar DC SN640 belong to?

The 7.68TB Ultrastar DC SN640 in this configuration is identified as a 0.8 DWPD enterprise SSD. The 0.8 DWPD classification indicates it is intended for enterprise environments with read intensive or moderately mixed workloads, where daily write volumes are balanced against capacity and lifecycle considerations.

Is the Western Digital 0TS2391 suitable for enterprise deployments?

Yes, the Western Digital 0TS2391 is categorized as an enterprise SSD, specifically a 7.68TB 2.5 inch 0.8 DWPD U.2 NVMe PCIe Gen 3.1 x4 drive under the Ultrastar DC SN640 line. Its form factor, interface, and endurance class are aligned with typical enterprise and data center deployment requirements for NVMe SSDs.

0TS2391 - Western Digital Ultrastar DC SN640 7.68 TB U.2 NVMe 2.5 inch U.2 SSD

Name: 0TS2391 - Western Digital Ultrastar DC SN640 7.68 TB U.2 NVMe 2.5 inch U.2 SSD
Brand: Western Digital
SKU: 0TS2391
Price: 2540 USD
Availability: InStock

0TS2391 - Western Digital Ultrastar DC SN640 7.68 TB U.2 NVMe 2.5 inch U.2 SSD | US IT Hardware

Product overview

The Western Digital Ultrastar DC SN640 WUS4BB076D7P3E1, SKU 0TS2391, is a 7.68TB enterprise solid state drive in a 2.5 inch U.2 form factor. It connects via a PCIe Gen 3.1 x4 interface and uses the NVMe protocol, aligning with U.2 NVMe PCIe Gen 3.1 x4 data center infrastructure. Classified as a 0.8 DWPD enterprise SSD, it is suited to read intensive and mixed workloads where endurance and capacity must be balanced. The 2.5 inch design supports conventional server and storage bay layouts, simplifying integration for IT teams standardizing on U.2 NVMe. With its 7.68TB capacity, this Ultrastar DC SN640 model offers substantial flash storage density per drive slot for consolidation of data sets. Organizations can align it with use cases that benefit from NVMe connectivity and enterprise focused design within existing PCIe Gen 3.1 environments.

7.68TB capacity in a 2.5 inch U.2 enterprise SSD
U.2 NVMe PCIe Gen 3.1 x4 interface for NVMe servers
0.8 DWPD endurance class for enterprise workloads
Western Digital Ultrastar DC SN640 data center SSD
Compatible with U.2 NVMe PCIe Gen 3.1 x4 backplanes
SKU 0TS2391, model WUS4BB076D7P3E1 for easy sourcing

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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

Technology
Manufacturer part #	0TS2391
Brand	Western Digital
Condition	New
Model	WUS4BB076D7P3E1
Series	Ultrastar DC SN640
Capacity	7.68 TB
SFF-8639	Supported
Max Power	12W
Encryption	AES-256 bit data encryption
Generation	NVMe 1.3c compliant
Idle Power	< 5W

Best for

Data center NVMe storage
Suitable for data centers standardizing on U.2 NVMe PCIe Gen 3.1 x4 SSDs, leveraging the 7.68TB capacity of the Ultrastar DC SN640 for dense flash storage in existing 2.5 inch infrastructures.
U.2 server and storage bays
Designed as a 2.5 inch U.2 NVMe PCIe Gen 3.1 x4 SSD, this 7.68TB drive aligns with servers and storage systems that accept U.2 NVMe devices for enterprise workloads.
Read intensive and mixed workloads
The 0.8 DWPD enterprise classification makes this 7.68TB Ultrastar DC SN640 suitable for read intensive and balanced mixed workloads where capacity and endurance must be optimized.
Enterprise SSD consolidation
With 7.68TB capacity in a single 2.5 inch U.2 NVMe PCIe Gen 3.1 x4 drive, this SSD supports consolidation of multiple data sets into fewer high capacity enterprise SSDs.
PCIe Gen 3.1 environments
Ideal for infrastructures built around PCIe Gen 3.1 x4 NVMe connectivity that require 7.68TB U.2 2.5 inch enterprise SSDs such as the Ultrastar DC SN640 WUS4BB076D7P3E1.

Frequently asked questions

What is the storage capacity of the Western Digital 0TS2391 SSD?

Details

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NVMe Enterprise & Data Center SSDs 7.68TB Enterprise SSDs 2.5-inch Enterprise SSDs Enterprise SSDs

Drive Width	2.5 inch

Form Factor	2.5 inch U.2

Product Line	Ultrastar DC SN640

Product Type	Solid State Drive

Namespace Count	128

Write Protection	Power-loss protection

Data Sanitization	Instant Secure Erase

Namespace Support	128 NVMe namespaces

Form Factor Height	7mm

Drive Classification	Enterprise SSD

Power Loss Protection	Supported

Variable Sector Sizes	Supported

Security Specification	TCG Ruby

Storage Capacity Class	7.68TB

Part Number Association	0TS2391 associated with WUS4BB076D7P3E1

Random Read Performance	Up to 480K IOPS

Random Write Performance	Up to 120K IOPS

Drive Form Factor Variant	2.5-inch U.2, 7mm

Uncorrectable Bit Error Rate	1 in 10^17 bits read

Random Mixed 70/30 Performance	Up to 240K IOPS

End-to-End Data Path Protection	Supported

Performance

DWPD	0.8 and 2.0 over 5 years
MTBF	2 million hours
Read Latency	Down to 78 us
NAND Technology	3D TLC
Endurance Rating	0.8 DWPD
Drive Endurance Class	0.8 DW/D
Sequential Read Speed	Up to 3.0 GiB/s
Sequential Write Speed	Up to 2.0 GiB/s
Maximum Interface Bandwidth	4 GB/s

Networking Ports & Interfaces

NVMe-MI	Version 1.1
Interface	PCIe Gen 3.1 x4
PCIe Version	PCIe Gen3.1 x4
U.2 Connector	Supported
Host Interface	PCIe Gen 3.1 x4 U.2 NVMe
Interface Standard	U.2 NVMe
Management Interface	NVMe-MI version 1.1

Western Digital Ultrastar DC SN640 7.68 TB U.2 NVMe 2.5 inch U.2 SSD