WD Ultrastar DC SN640 Enterprise SSD - 1.92TB

Brand: Western Digital | Category: Enterprise SSDs

SKU: WDS192T1B0C | Part #: WDS192T1B0C | MPN: WDS192T1B0C

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The WD Ultrastar DC SN640 Enterprise SSD in 1.92TB capacity ships as a U.2 2.5-inch form factor device with a 15mm height, designed to slot directly into SFF-8639 hot-swap bays found across mid-range and enterprise-class server backplanes. This physical profile means storage architects can drop the WDS192T1B0C into existing infrastructure without requiring adapter cards or riser boards—a practical consideration when retrofitting capacity into populated data centres where every bay matters. The drive connects via NVMe 1.3 protocol over PCIe Gen 3.1 x4 lanes, delivering sequential read throughput of 3,500 MB/s and sequential write performance of 2,100 MB/s at queue depth 32. For workloads that depend on sustained, linear access patterns—database backups, video transcoding, or large-file transfer operations—these numbers translate to predictable performance that won't surprise you when your monitoring tools catch the flow.

Random I/O performance is where the Ultrastar DC SN640 demonstrates purpose-built enterprise design. The drive achieves up to 780,000 IOPS on random read operations and 220,000 IOPS on random writes, both measured at 4K block size with high queue depths. Typical read latency sits at 120 microseconds and write latency at 70 microseconds, meaning individual I/O requests complete with minimal delay—essential for OLTP databases, real-time analytics platforms, and containerized workloads where tail latency spikes degrade user experience. Storage teams evaluating SSDs for virtual machine datastores or AI training clusters will recognize these figures as befitting a drive that expects to handle mixed workloads rather than sequential-only scenarios. The 96-layer 3D TLC NAND construction gives Ultrastar DC the density advantage over older planar designs while maintaining the reliability characteristics enterprises demand.

Endurance and longevity anchor the value proposition of this specific drive. The WDS192T1B0C is rated for 1 drive write per day (DWPD) over a five-year warranty period, which translates to approximately 3,504 terabytes of total bytes written before the drive reaches its end-of-life specification. For most data-centre deployments—where a 1.92TB SSD in a RAID-10 or RAID-6 configuration serves perhaps 20–30 virtual machines—five years of warranted operation means predictable replacement cycles and budget planning that doesn't require constant justification to finance. Power consumption remains modest at 8.5W under active load and 5.0W during idle periods, helping to keep rack power budgets in line and reducing cooling overhead in dense server enclosures. The drive incorporates power-loss protection via capacitor-backed circuitry, ensuring that in-flight data reaches the NAND safely even during unexpected power events.

Security features integrated into the Ultrastar DC SN640 reflect the sensitivity of data stored in enterprise environments. The drive implements AES 256-bit self-encrypting drive (SED) capability with TCG Opal 2.0 support, allowing IT security teams to enforce encryption at the hardware level without reliance on host-side encryption overhead. End-to-end data protection via T10 DIF/DIX capabilities guards against undetected data corruption during transfer between the drive and system memory—a safeguard that particularly matters in configurations where multiple servers access shared storage or where data consistency is non-negotiable. The 2,000,000-hour MTBF rating and proven track record of the Ultrastar DC line across comparable storage deployments give procurement teams confidence that warranty claims will remain infrequent and that refresh cycles will follow planned schedules rather than unexpected failures.

Storage architects and infrastructure teams evaluating the WDS192T1B0C will find it occupies a practical middle ground: higher capacity than 960GB predecessors, lower cost-per-terabyte than larger 3.84TB or 7.68TB configurations, and immediate compatibility with existing U.2 server backplanes already deployed in GCC data centres and enterprise labs. Whether your deployment centres on database acceleration, virtual machine host caching, or capacity expansion within AI training environments, the Ultrastar DC SN640 delivers consistent performance without requiring infrastructure redesign. Network engineers planning storage refresh cycles and system administrators managing inventory lists can confidently spec this drive against procurement requirements and vendor evaluations with the certainty that performance claims rest on established, verifiable metrics rather than marketing extrapolation.

Enterprise SSD Performance and Reliability Specifications

• U.2 2.5-inch 15mm form factor fits SFF-8639 hot-swap bays on standard enterprise server backplanes
• NVMe 1.3 over PCIe Gen 3.1 x4 interface with 3,500 MB/s sequential read and 2,100 MB/s sequential write throughput
• 780,000 random read IOPS and 220,000 random write IOPS at 4K block size; typical latency of 120 µs (read) and 70 µs (write)
• 1 DWPD endurance rating over five years with 3,504 TBW total, supporting predictable replacement cycles in production environments
• AES 256-bit self-encrypting drive with TCG Opal 2.0 and T10 DIF/DIX end-to-end data protection for security and integrity
• 8.5W active power consumption and capacitor-backed power-loss protection to minimize operational overhead and safeguard data during power events
• 2,000,000-hour MTBF rating and proven reliability in multi-petabyte data-centre deployments across the GCC region

Omnixon Global stocks the WD Ultrastar DC SN640 (part number WDS192T1B0C) as part of our enterprise SSD portfolio, serving data-centre operators, AI infrastructure teams, and large-scale enterprises across the UAE, GCC, and Asia-Pacific regions. If your organisation is evaluating storage refresh cycles, scaling AI training clusters, or building new database infrastructure, we invite you to submit an RFQ through our technical sales team. We can provide competitive quotes, technical consultation, and logistics support tailored to your deployment timeline and site location.