WD Ultrastar SN630 WUS3BA138C7P3E3 / 0TS1755 / 0TS1619 PCIe U.2 NVMe Solid State Drive

Western Digital Part #/MPN: WUS3BA138C7P3E3

DiscTech Item #: WDC-WUS3BA138C7P3E3-C9-OE

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Enterprise Grade

Capacity: 3.84TB

Speed: Solid State Memory

Interface Types: NVMe U.2, PCIe

Form Factor: 2.5inx7mm Fits All laptops

Sector Size: 512 / 512e

Sustained Throughput: 2510/1880

Average Seek Time: 243 μs

Electrical Interface: PCIe - v3.1 -16GBps


SSD Endurance DWPD: Enterprise Read Intensive

Western Digital / WD/ HGST Ultrastar SN630 0TS1755 / 0TS1619 / WUS3BA138C7P3E3 3.84TB U.2 2.5-Inch 3D TLC NAND ISE PCIe 3.1 NVMe 1.3 SSD - Certified 95

Western Digital / WD/ HGST Ultrastar SN630 0TS1755 / 0TS1619 / WUS3BA138C7P3E3 3.84TB / 3840GB U.2 2.5" 64-Layer BiCS3 3D TLC / Triple Level Cell NAND ISE / Instant Secure Erase PCIe / PCI Express 3.1 NVMe / NVM Express 1.3 SSD / Solid State Drive - Certified 95

Ultrastar DC SN630

Economies of Scale Propel Cloud Storage
Next generation cloud data centers are now deploying NVMe SSD storage as a core component, replacing the slower legacy SATA interface. The Ultastar DC SN630 NVMe SSD is built on Hitachi’s in-house controller and firmware technology and utilizes our own 64-layer BiCS3 3D NAND, which allows Hitachi to tightly control all design aspects and consistently deliver low latency and high performance. This essential NVMe offering provides twice the maximum capacity per slot and more capacity choices than our prior generation, up to 7.68TB.

Cloud services are revolutionizing how companies think about data storage by transitioning from fixed-cost UT infrastructure to variable cost models. As more business services move to the cloud to reap the benefits of the “pay-as-you-go” model, the demands on cloud service providers to scale increase exponentially. Finding ways to maximize and streamline storage by running concurrent workloads across the storage infrastructure has become essential. Furthermore, cloud storage services must offer high availability and consistent I/O performance to be delivered 24/7, 365 days a year. Ultrastar DC SN630 NVMe SSDs help customers meet these rigorous requirements at a viable $/GB.

Ultrastar DC SN630 SSDs Increase Productivity and Lower TCO
SATA SSDs have long been used in data centers and cloud storage. But as capacity needs grow, along wit the necessity to access data with minimal latency, the adequacy of the interface bandwidth between the host and the drive comes under scrutiny. The SATA (6Gb/s) interface constrains performance of most SSDs and introduces latency compared to NVMe SSDs. Utilizing higher capacity points with fast, low latency NVMe allows data center architects to reduce the number of servers deployed while still handling more users and providing more services per server. Server reduction, in turn, reduces the number of “per-core” software licensing fees required resulting in even lower TCO.

Highly Reliable Storage Innovation
Utilizing the industry standard NVMe command protocol that lowers latency and improves bandwidth, Ultrastar DC SN630 SSDs enable a cost-effective transition to next-generation storage platforms.

Available in the 2.5-inch U.2 small form factor with a slim 7mm profile, typical power consumption under 10.75W, and hot-swap capability, Ultrastar DC SN630 NVMe SSDs simplify large-scale deployment in the data center. This results in efficient workload utilization, a lower thermal profile compared to 25W PCIe SSDs, and improved TCO.

Ultrastar DC SN630 SSDs protect your data by providing data protection, proprietary wear levelling algorithms, and power loss protection required in a demanding enterprise environment. By leveraging Hitachi’s history of providing world class enterprise storage solutions, manufacturing excellence, and commitment to reliability leadership, Ultrastar DC SN630 SSDs enable data center customers to innovate with minimal risk, backed with a 5-year limited warranty.

Options to Simplify Data Security
Compliance and privacy requirements drive the need for increased data security. Ultrastar DC SN630 models with Instant Secure Erase (ISE) provide peace of mind by using behind-the-scenes encryption keys to expedite drive redeployment and retirement.

Secure Firmware downloads with RSA authentication ensure that the drive runs authentic Hitachi firmware only.

Features & Benefits

  • PCIe Gen 3.1, x4 interface and NVMe 1.3 compliant with in-box driver support
  • Industry-standard 2.5-inch U.2 small form factor for high serviceability in a slim 7mm package
  • Capacities up to 7.68TB
  • Optimized for read-Intensive & mixed-use workloads
  • Up to 170K IOPS (70/30 random mixed workload
  • 65% less power consumption compared to 25W PCIe SSD solutions
  • Hot Swap/Hot Plug support with data-loss protection
  • NVMe MI 1.0 Management Interface Support
  • MTBF rating of 2 million hours
  • Instant Secure Erase (ISE) with AES-256 encryption


Specialized for the Following Applications

  • Cloud and hyperscale storage
  • Software Defined Storage
  • File, Block and Object Storage applications
  • Direct-attached Storage (DAS)
  • Hyper-converged infrastructure
  • NoSQL databases
  • Content Delivery Network (CDN)
  • Virtualization
  • OLAP
  • File/Web servers
  • Media streaming & VoD



This drive is compatible with desktop or servers and arrays that accept 2.5” 7mm U.2 PCIe NVMe drives. Easily installed in any PCIe slot using a U.2 to PCIe adapter for U.2 NVMe SSDs

Ultrastar DC SN630
Part Numbers0TS1755 & 0TS1619
Model NumberWUS3BA138C7P3E3
Capacity3.84TB / 3840GB
FeatureInstant Secure Erase (ISE)
InterfacePCIe Gen 3.1 x4 (Compliant to NVMe 1.3)
Form FactorU.2 2.5-inch drive
Endurance (Drive writes per day, DW/D)0.8
Flash Memory TechnolgoyWDC BiCS3 3D TLC NAND
Performance (Specified at 10.75W Average)
Sequential Read (max MB/s, 128KiB, QD128)2,510
Sequential Write (max MB/s, 128KiB, QD128)1,180
Random Read (max IOPS, 4KiB BS, QD128)332,420
Random Write (max IOPS, 4KiB BS, QD128)55,000
Random Mix R70/W30 (max IOPS, 4KiB BS, QD128)163,350
Latency Distribution (Specified at 10.75W Average)
Random Read Latency (4KiB BS, QD1, 99.99%)(μs)243
Uncorrectable Bit Error Rate (UBER)<1 in 1017
EOL Data Retention3 months at 40°C
MTBF2M hours
Annual failure rate (AFR)0.44%
Requirement (DC +/- 10%)12V
Operating Power States (W, typical)10.75 & 8.75
Idle (W, average)5.80
Operating Temperature0°C to 78°C
Non-Operating Temperature-40°C to 85°C
Physical Measurements
Width (mm)69.85 +/- 0.25
Length (mm, max)100.45
Weight (g, max)95
z-height (mm)7.00 + 0.2 / - 0.5 (including lables)
Environmental (non-operating)
Temperature0°C to 70°C (Case)
Airflow (LFM)N/A

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ROHS Compliant

Alternate MPNs: 0TS1755 0TS1619

Weight: 1 lb

Warranty: 1 Year DiscTech

Certified 95

Condition Levels Explained

These products can not qualify as new, however, we have tested and evaluated their health, performance and usage statistics and determined that they have at least 95% of their designed service life remaining. e.g. in SSDs they are guaranteed to have at least 95% endurance remaining.

1 Year DiscTech Warranty

Product Warranties Explained

The product has a DiscTech warranty for the time period specified. View our limited warranty