WD Ultrastar DC SN640 Enterprise SSD - 7.68TB

Brand: Western Digital | Category: Enterprise SSDs

SKU: WDS768T1B0C | Part #: WDS768T1B0C | MPN: WDS768T1B0C

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The WD Ultrastar DC SN640 (part number WDS768T1B0C) at 7.68TB capacity delivers 14,016 TBW endurance—enough for write-intensive enterprise workloads that demand sustained performance without premature drive failure. This U.2 form factor NVMe drive is purpose-built for data centres and hyperscale environments where endurance specifications directly influence five-year total cost of ownership and procurement cycles.

Western Digital engineered the Ultrastar DC SN640 around NVMe 1.3 over PCIe Gen 3.1 x4, which has become the standard interface for high-performance storage tiering in modern server architectures. The drive reads sequentially up to 3,100 MB/s and writes up to 2,000 MB/s, characteristics that matter less for latency-sensitive operations than they do for bulk data movement, backup streams, and batch analytics workloads common in AI labs and research facilities. Where this drive truly separates itself is in random I/O: the WDS768T1B0C sustains 770,000 IOPS on random reads and 200,000 IOPS on random writes at 4K block size. Those figures place it in the mid-to-upper performance tier for enterprise SSDs, suitable for both transactional databases and distributed storage backends that expect sustained queue depths.

Endurance is where the Ultrastar brand has consistently earned credibility with storage architects and infrastructure teams. At 1 DWPD (drive writes per day), this 7.68TB unit can absorb roughly 7.68TB of write traffic daily for five years before reaching the 14,016 TBW limit. In practice, many enterprise deployments never reach that ceiling; the specification serves as a safety margin and a guarantee that WD stands behind long-term reliability. The drive includes 256-bit AES encryption with TCG Opal 2.01 compliance, power-loss protection to prevent corruption during unexpected shutdowns, and end-to-end data protection through T10 PI (Protection Information). These features are non-negotiable for regulated industries and multi-tenant cloud environments. The 2,000,000-hour MTBF rating and support for operating temperatures from 0°C to 70°C indicate the drive was designed for controlled data centre conditions, not edge or mobile deployments.

The 15mm form factor and U.2 connector (SFF-8639) are standard in modern NVMe storage arrays and high-density server platforms from major OEMs. If your infrastructure already supports U.2 drives in storage appliances or all-flash arrays, the WDS768T1B0C integrates without re-architecting. Active power consumption peaks at 14W, which is reasonable for a drive of this capacity and performance tier; that figure informs thermal and PSU planning for large-scale rollouts. The Ultrastar DC SN640 line has seen broad adoption in customer-deployed databases, video transcoding pipelines, and machine learning training clusters where performance consistency matters more than peak throughput alone. Whether you are a system integrator qualifying storage for a new data centre refresh or an enterprise storage team evaluating mid-tier capacity points, this part number offers a proven balance between performance, endurance, and cost per terabyte that has proven reliable across thousands of deployments.

Omnixon Global carries the WD Ultrastar DC SN640 and the full portfolio of Western Digital enterprise storage solutions for distribution across the GCC, South Asia, and Europe. We work with data centre operators, systems integrators, and enterprise procurement teams who need reliable supply chains and technical support. If you are building or expanding storage capacity and want to discuss volume pricing, compatibility with your current infrastructure, or lead times for the WDS768T1B0C, submit an RFQ through our platform or contact our enterprise sales team directly.

Performance Specifications & Endurance Profile

• 14,016 TBW endurance with 1 DWPD rating—designed for sustained write workloads over five-year deployment cycles
• Sequential read/write performance of 3,100 MB/s and 2,000 MB/s supports bulk data movement and streaming analytics
• Random I/O: 770,000 IOPS read, 200,000 IOPS write at 4K block size for transactional and distributed database workloads
• NVMe 1.3 interface over PCIe Gen 3.1 x4 with power-loss protection and 256-bit AES encryption (TCG Opal 2.01)
• U.2 15mm form factor (SFF-8639) for compatibility with modern storage arrays and all-flash appliances
• 2,000,000-hour MTBF with operating range 0°C to 70°C; peak active power draw of 14W
• End-to-end data protection via T10 PI and support for enterprise security and compliance frameworks