Which interface and form factor does the Ultrastar DC SN840 0TS2055 use?

This drive is listed in the U.2 PCIe NVMe SSD category and described as a 3.84TB Enterprise 2.5 inch 1 DWPD model. That means it uses a U.2 PCIe NVMe interface and fits the standard 2.5 inch form factor, aligning with common NVMe backplanes in modern servers and storage arrays.

What endurance class does this 3.84TB Ultrastar DC SN840 belong to?

The drive is explicitly categorized as a 3.84TB Enterprise 2.5 inch 1 DWPD SSD. The 1 DWPD designation indicates it is intended for enterprise and data center workloads where the daily write volume is compatible with this endurance level, such as many read intensive or mixed application profiles.

Is the Ultrastar DC SN840 WUS4BA138DSP3X4 considered an enterprise product?

Yes, the product level is identified as Enterprise, and it appears under the Solid State Drive, U.2 PCIe NVMe SSD, 3.84TB Enterprise 2.5 inch 1 DWPD category. This positioning indicates it is designed for use in professional IT and data center environments rather than consumer systems.

How can procurement teams uniquely identify this specific Ultrastar DC SN840 drive?

Procurement and asset management teams can rely on several identifiers: the brand Western Digital, the model Ultrastar DC SN840 WUS4BA138DSP3X4, and the SKU 0TS2055. Combined with the 3.84TB Enterprise 2.5 inch 1 DWPD category, these details clearly distinguish this drive from other capacities or variants.

0TS2055 - Western Digital 0TS2055 3.84TB U.2 NVMe SSD

Name: Western Digital 0TS2055 3.84TB U.2 NVMe SSD
Brand: Western Digital
SKU: 0TS2055

0TS2055 - Western Digital 0TS2055 3.84TB U.2 NVMe SSD | US IT Hardware

Product overview

The Western Digital Ultrastar DC SN840 WUS4BA138DSP3X4 is an enterprise solid state drive designed for data center and professional IT environments. This model delivers 3.84TB of storage capacity in a U.2 PCIe NVMe 2.5 inch form factor, suitable for systems that support this interface. Classified at the 1 DWPD level, it is positioned for read intensive and general enterprise workloads where predictable endurance is required. As part of Western Digital’s Ultrastar DC SN840 family, this drive aligns with enterprise standards for reliability and consistency. The SKU 0TS2055 allows clear identification within asset management and procurement systems. With its NVMe connectivity and 2.5 inch U.2 design, the drive fits modern server and storage architectures that are built around NVMe-based flash storage.

3.84TB enterprise capacity for data center workloads
U.2 PCIe NVMe interface for modern servers
2.5 inch form factor for standard drive bays
1 DWPD endurance class for enterprise use
Ultrastar DC SN840 WUS4BA138DSP3X4 model
SKU 0TS2055 for precise asset tracking

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Purchase orders accepted from qualified institutions.
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 Line
Manufacturer part #	0TS2055
Brand	Western Digital
Condition	New
Model	WUS4BA138DSP3X4
Series	Ultrastar DC SN840
Capacity	3.84TB
Use Case	Enterprise; Data center
Case Type	2.5-inch U.2 NVMe SSD
Encryption	TCG Ruby
Form Factor	2.5 inch
Drive Height	15 mm

Compatible systems

No specific system or OS compatibility data was stated for 0TS2055 beyond general NVMe usage.

Best for

Enterprise servers
Suitable for enterprise servers requiring a 3.84TB U.2 PCIe NVMe 2.5 inch SSD with 1 DWPD endurance for read intensive or mixed enterprise workloads.
Data center storage arrays
Fits data center storage arrays designed around U.2 PCIe NVMe SSDs, using the 3.84TB capacity and 1 DWPD classification for predictable endurance planning.
NVMe infrastructure upgrades
Appropriate for refreshing existing infrastructure to U.2 PCIe NVMe SSDs, leveraging the 3.84TB Ultrastar DC SN840 form factor and enterprise product level.

Frequently asked questions

What is the storage capacity of the Western Digital 0TS2055 SSD?

Details

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NVMe Enterprise & Data Center SSDs 3.84TB Enterprise SSDs 2.5-inch Enterprise SSDs Enterprise SSDs

Product Type	Internal solid state drive

Power Mode Support	Enterprise NVMe SSD power modes (active and idle states, drive-managed)

Annualized Failure Rate	0.35 percent

Drive Form Factor Detail	U.2 15mm

Uncorrectable Bit Error Rate	1 in 10^17 bits read

Flash Memory Technology Detail	Western Digital 96‑Layer 3D TLC NAND

Performance

MTBF	2.5 million hours (projected)
NAND Flash Type	3D TLC
Endurance Rating	1 DWPD
Interface Bandwidth	4 GB/s (PCIe Gen 3.1 x4)
Sequential Read Speed	3470 MB/s
Random Read IOPS (4KB)	780,000 IOPS
Sequential Write Speed	3250 MB/s
Random Write IOPS (4KB)	257,000 IOPS
Mixed Random 70/30 Read/Write IOPS	503,000 IOPS
Maximum Petabytes Written for 3.84TB 1 DWPD	7.008 PBW

Networking Ports & Interfaces

Interface	PCIe Gen 3.1 x4
NVMe Version	NVMe 1.3c compliant controller
Drive Port Type	U.2 (SFF-8639) connector
Dual Port Support	Dual-port PCIe
Host Interface Detail	Western Digital NVMe 1.3c controller over PCIe Gen 3.1
PCIe Lane Configuration	PCIe Gen 3.1 1x4 or 2x2
Drive Interface Standard	NVMe

Western Digital 0TS2055 3.84TB U.2 NVMe SSD