Western Digital 0TS2462 Ultrastar DC SN655 7.68TB PCIe Gen4 NVME 1.4B U.3 15mm SSD

Product Overview

The Western Digital Ultrastar DC SN655 7.68TB PCIe Gen4, NVMe 1.4b U.3 15mm ISE SSD delivers next-generation enterprise-grade solid-state storage designed to meet the demands of modern data-driven workloads. This high-capacity SSD is optimized for superior performance, durability, and scalability in large-scale environments.

General Information

• Manufacturer: Western Digital Corporation
• Part Number: 0TS2462
• Product Line: Ultrastar
• Series: Ultrastar DC SN655
• Model Name: Ultrastar DC SN655 7.68TB Enterprise SSD

Compatibility

This enterprise solid-state drive is fully compatible with multiple operating systems, ensuring smooth deployment across different IT infrastructures:

• Windows and Windows Server platforms
• Linux distributions for enterprise workloads

Applications & Environments

Optimized Use Cases

The Ultrastar DC SN655 SSD is engineered to support demanding business-critical applications and large-scale deployments, including:

• Cloud data centers and hosting platforms
• Scale-out storage or software-defined solutions
• Big Data workloads requiring reliable throughput
• NoSQL and distributed database infrastructures
• Artificial Intelligence and Machine Learning (AI/ML) deep learning models
• Data archiving and long-term retention storage

Product Information

Core Specifications

• Storage Capacity: 7.68TB
• Endurance: 1 Drive Write Per Day (DW/D)
• Maximum Petabytes Written: 14.0 PBW
• Interface: PCIe Gen4, NVMe 1.4b protocol
• Form Factor: U.3 15mm enterprise-grade
• Security: Integrated Self-Encrypting Drive (ISE)

Performance Highlights

Sequential and Random Performance

The Western Digital Ultrastar DC SN655 SSD offers lightning-fast read and write capabilities, ensuring ultra-low latency and dependable output:

• Sequential Read: Up to 6800 MB/s
• Sequential Write: Up to 2000 MB/s
• Random Read: Up to 980,000 IOPS
• Random Write: Up to 80,000 IOPS

Latency Metrics

• Read Latency: ~100 µs
• Write Latency: ~15 µs

Power Efficiency

Electrical Requirements

The SSD is optimized for energy efficiency while supporting high workloads in enterprise data centers:

• Input Requirement: +12V, 3.3V (DC, ±10%)
• Operating Power (Typical): 16W to 18W
• Idle Power Consumption: ~8W average

Energy-Conscious Design

With lower idle consumption and balanced operating wattage, the Ultrastar DC SN655 SSD is designed to reduce data center operating costs while maintaining peak performance output.

Western Digital 0TS2462 Ultrastar DC SN655 7.68TB PCIe Gen4 NVMe 1.4b U.3 SSD

The Western Digital 0TS2462 Ultrastar DC SN655 7.68TB PCIe Gen4 NVMe U.3 SSD is a next-generation enterprise-class solid-state drive engineered for mission-critical applications. Built to deliver exceptional performance, durability, and scalability, this SSD is designed to handle the demanding workloads of modern data centers. Its large 7.68TB storage capacity paired with PCIe Gen4 interface ensures fast data throughput, while NVMe 1.4b protocol compliance provides optimized efficiency for both read-intensive and mixed-use environments.

With a compact 15mm U.3 form factor, the Ultrastar DC SN655 offers compatibility with multiple server and storage configurations, making it a versatile solution for enterprises looking to expand their infrastructure. Whether used for cloud computing, high-frequency trading, artificial intelligence, or machine learning applications, this drive brings unmatched reliability and performance consistency.

Key Features and Specifications

High-Capacity Enterprise Storage

The 7.68TB storage capacity ensures that organizations can store massive volumes of structured and unstructured data without compromising performance. It is ideal for data-intensive industries such as telecommunications, research, healthcare, finance, and large-scale e-commerce platforms.

PCIe Gen4 Interface

The drive leverages PCIe Gen4 technology, offering twice the bandwidth compared to PCIe Gen3. This enables faster data transfer speeds and reduced latency, improving workload efficiency for applications that require rapid access to large datasets.

NVMe 1.4b Compliance

NVMe 1.4b protocol support ensures improved queuing, advanced error reporting, and optimized performance for storage systems. It allows the Ultrastar DC SN655 to handle multiple parallel workloads without bottlenecks, ensuring smooth performance under demanding conditions.

15mm U.3 Form Factor

The U.3 15mm design provides flexibility for modern server infrastructures. It supports backward compatibility with U.2 drives and enables hot-swapping, which simplifies maintenance and upgrades in data centers where downtime is not an option.

Enhanced Security and Data Protection

Western Digital integrates advanced security features, including encryption and secure erase functionality, ensuring sensitive enterprise data remains protected. These safeguards comply with data protection regulations and minimize risks associated with unauthorized access.

Performance Advantages

Optimized Read and Write Throughput

Designed for workloads that demand high-speed I/O operations, the Ultrastar DC SN655 offers outstanding read/write performance. Its architecture enables faster boot times, quicker application loading, and seamless data access for time-sensitive business operations.

Low Latency

The PCIe Gen4 interface and NVMe optimizations reduce latency significantly compared to legacy SATA SSDs. This low latency translates into near-instant responsiveness, which is critical for transactional databases, virtualization platforms, and real-time analytics.

Energy Efficiency

Energy consumption plays a crucial role in enterprise IT environments. The Ultrastar DC SN655 is engineered to deliver high performance per watt, reducing overall operational costs while maintaining consistent output across workloads. This efficiency is especially valuable in large-scale deployments.

Reliability Under Heavy Workloads

Built with enterprise-grade NAND flash technology, the SSD maintains performance consistency even under sustained heavy workloads. It is ideal for applications requiring uninterrupted uptime, such as online transaction processing (OLTP), cloud services, and virtual desktop infrastructures.

Applications and Use Cases

Cloud Computing

As businesses increasingly rely on cloud services, the Ultrastar DC SN655 ensures high availability and scalability for cloud infrastructure. Its capacity and speed make it suitable for multi-tenant cloud environments where performance isolation is critical.

Artificial Intelligence and Machine Learning

AI and ML workloads involve processing massive datasets in real time. The drive’s low latency and high throughput make it a perfect fit for training deep learning models, supporting high-speed data pipelines, and enabling real-time inferencing.

High-Frequency Trading and Finance

Financial services require immediate data access for high-frequency trading algorithms and risk analysis models. The Ultrastar DC SN655 ensures minimal latency and consistent throughput, empowering financial institutions to stay ahead of market movements.

Healthcare and Research

With healthcare systems relying on large-scale data processing for imaging, genomic research, and patient record management, this SSD ensures accuracy and speed in critical workloads. Its reliability is essential for environments where downtime could impact patient care.

Big Data Analytics

Data-driven organizations benefit from the SSD’s high-speed read and write capabilities. For analytics platforms and data warehouses, the Ultrastar DC SN655 provides the power needed to rapidly analyze massive datasets and generate actionable insights.

Enterprise-Grade Durability

High Endurance

With endurance ratings designed for enterprise workloads, the drive can withstand intensive write operations over its lifecycle. This durability ensures stable performance and reduces the need for frequent replacements, lowering long-term costs.

Advanced Error Correction

The SSD incorporates sophisticated error correction algorithms to safeguard data integrity. These mechanisms reduce risks of corruption during transfers, ensuring that critical workloads maintain accuracy even under heavy I/O conditions.

Thermal Management

Heat dissipation is crucial in dense server environments. The Ultrastar DC SN655 integrates thermal throttling and heat management technologies to maintain performance and reliability while operating under high loads.

Compatibility and Integration

Seamless Data Center Deployment

The U.3 15mm form factor allows seamless integration with existing server and storage arrays. Organizations can adopt the drive without requiring significant infrastructure changes, enabling faster deployment and reduced downtime.

Backward Compatibility

For enterprises with mixed environments, the Ultrastar DC SN655 ensures compatibility with U.2 infrastructures, protecting existing investments while enabling a transition to newer U.3 standards.

Advantages Over Competing Solutions

Compared to SATA SSDs

Unlike traditional SATA-based SSDs, the Ultrastar DC SN655 leverages PCIe Gen4 for exponential improvements in bandwidth and latency. It delivers enterprise-grade reliability with a performance profile suited to modern applications.

Compared to PCIe Gen3 NVMe Drives

With double the bandwidth of PCIe Gen3, this SSD provides higher throughput, enabling businesses to process larger volumes of data faster. This performance advantage is critical for AI, ML, and high-frequency data analytics.

Compared to HDDs

While hard disk drives remain relevant for archival storage, SSDs like the Ultrastar DC SN655 deliver unparalleled speed, energy efficiency, and resilience. For latency-sensitive workloads, HDDs cannot match the benefits of this SSD.

Future-Proof Data Center Investment

The Western Digital Ultrastar DC SN655 positions organizations for the future of data center infrastructure. With advancements in AI, cloud, and big data analytics, storage demands continue to grow. This SSD provides the scalability, reliability, and performance required to meet future business objectives without frequent upgrades.

Scalability for Expanding Workloads

As enterprises adopt more demanding workloads, scalability becomes essential. The 7.68TB capacity combined with NVMe architecture ensures this drive can handle growing demands effectively, reducing storage limitations and bottlenecks.

Compliance with Industry Standards

By adhering to NVMe 1.4b standards and supporting U.3 infrastructure, the Ultrastar DC SN655 aligns with industry best practices, ensuring compatibility with emerging technologies and next-generation data centers.