Redefining the limits for high-performance storageBe ready for the future of mission critical workloads with the Western Digital Ultrastar DC SN861. The latest Western Digital SSD with a cutting-edge PCIe Gen5 enterprise-class speeds, the Ultrastar DC SN861 offers exceptional performance and multiple capacities up to 7.68TB1 options. With high random read speeds and low power consumption, the DC SN861 is optimized for compute-intensive AI and machine learning applications, ensuring superior read/write performance, extremely low latency, and maximize IOPs/Watt. The DC SN861 also provides a rich feature set including NVMe™ 2.02 and OCP 2.0 support, 1 & 3 DWPD2, and a 5-year limited warranty3, making it the ideal solution for hyperscale, cloud, and enterprise data centers.Ready for the Demands of AI WorkloadsDesigned to handle compute-intensive AI and machine learning applications which require high bandwidths and low latencies.Superior Performance and CapacityExperience future-ready PCIe Gen5 read/write speeds with capacities up to 7.68TB1.Designed for Power EfficiencyArchitected to provide heightened performance per watt, optimizing power efficiency and reducing operational costs.Outstanding Mixed Workload PerformanceHigh-speed random reads provide enhanced solutions at low cost for your enterprise.Optimized for Quality of Service (QoS)Reduce latency during mission-critical workloads, delivering consistent Quality of Service (QoS) for your applications, even under heavy workloads.Rich Enterprise FeaturesBenefit from enterprise-class features such as Power Loss Protection, End-to-End Data Path Protection, and TCG security and encryption, helping ensure data integrity and securityFuture-Ready Data InfrastructureDesigned to support NVMe™ 2.02, and NVMe™ MI 1.2c, along with Flexible Data Placement (FDP)4 and OCP 2.0 supportive, for enhanced scalability and efficiency.

Redefining the limits for high-performance storageBe ready for the future of mission critical workloads with the Western Digital Ultrastar DC SN861. The latest Western Digital SSD with a cutting-edge PCIe Gen5 enterprise-class speeds, the Ultrastar DC SN861 offers exceptional performance and multiple capacities up to 7.68TB1 options. With high random read speeds and low power consumption, the DC SN861 is optimized for compute-intensive AI and machine learning applications, ensuring superior read/write performance, extremely low latency, and maximize IOPs/Watt. The DC SN861 also provides a rich feature set including NVMe™ 2.02 and OCP 2.0 support, 1 & 3 DWPD2, and a 5-year limited warranty3, making it the ideal solution for hyperscale, cloud, and enterprise data centers.Ready for the Demands of AI WorkloadsDesigned to handle compute-intensive AI and machine learning applications which require high bandwidths and low latencies.Superior Performance and CapacityExperience future-ready PCIe Gen5 read/write speeds with capacities up to 7.68TB1.Designed for Power EfficiencyArchitected to provide heightened performance per watt, optimizing power efficiency and reducing operational costs.Outstanding Mixed Workload PerformanceHigh-speed random reads provide enhanced solutions at low cost for your enterprise.Optimized for Quality of Service (QoS)Reduce latency during mission-critical workloads, delivering consistent Quality of Service (QoS) for your applications, even under heavy workloads.Rich Enterprise FeaturesBenefit from enterprise-class features such as Power Loss Protection, End-to-End Data Path Protection, and TCG security and encryption, helping ensure data integrity and securityFuture-Ready Data InfrastructureDesigned to support NVMe™ 2.02, and NVMe™ MI 1.2c, along with Flexible Data Placement (FDP)4 and OCP 2.0 supportive, for enhanced scalability and efficiency.

Economical Capacities and Fast Data Access for the Data Center The Ultrastar® DC HA340 HDD in 4TB, 6TB, and 8TB delivers efficiency and performance for traditional and legacy systems based on proven CMR technology. Designed for a variety of applications including traditional storage arrays, rack-mounted storage enclosures and server-based storage systems, these drives are offered at 7,200 RPM with 6Gb/s SATA and Advanced Format 512e format.Technology innovation delivers efficiency and performance for legacy systemsAddress data center requirements by providing legacy capacities from 4TB to 8TB while implementing the latest in HDD storage technologies. Proven and cost-efficient designUltrastar DC HA340 drives are based on an air-based HDD platform with Conventional Magnetic Recording (CMR) technology in a 3.5-inch form factor.   Performance and protection These 4TB, 6TB, and 8TB HDD’s leverage a dual-stage microactuator to enhance head positioning accuracy for better drive performance.   Designed for data center workloadsThe Ultrastar DC HA340 is performance-optimized to handle heavy application workloads of up to 550TB2 per year. Built with reliability in mind This robust drive delivers dependability in intense data center environments with up to 2M hours MTBF3 (projected).  Quality and securityProvides additional peace of mind with a 5-year limited warranty. 

Data strategy, not just data storageUltrastar NVMe enterprise SSDs continue to be the ideal solution for cloud and server providers who need performant, high-capacity, cost-optimized, read-intensive performance for their data-intensive applications.Unlocking the Full Potential of Enterprise SSDsWith dual-port redundancy and failover capability, end-to-end data protection and additional enterprise features, Ultrastar DC SN655 NVMe SSDs help ensure your data is secure and available when needed. With high-capacity, low-latency performance reaching up to 1.1M IOPs, storage providers are efficiently able to increase capacity for modern applications processing large unstructured datasets and are reducing time-to-insights of big data and enabling efficient machine learning.Features Ultrastar DC SN655 NVMe SSDs includes the next generation Western Digital NVMe 1.4b controller with PCIe Generation 4.0 interface and Western Digital BiCS5 TLC 3D NAND to enable higher capacities and performance at scale for increasingly larger application workloads. Designed and built for the standard 2.5” SSD storage infrastructure, the SN655 includes support for U.2 and U.3 backplanes and features power loss protection and 2.5M MTBF (projected) and 1.0 DW/D with a 5 year limited warranty.Emerging WorkloadsUltrastar DC SN65x NVMe SSDs are optimized for cloud and scaleout workloads, providing high QoS consistency for the emerging workloads for big data, artificial intelligence, and machine learning that are increasing in size and complexity making them the ideal solution for scaling capacity and maximizing GB/watt.

Engineered to handle high-intensity workloads with proven technologyUltrastar Data Center HC555 hard drives are engineered to deliver the large capacity, strong performance and proven reliability needed to handle high-intensity workloads in 24×7 multi-user data center environments.Handle Data Center Workloads with Proven TechnologyThe combination of field-proven hardware with the latest innovative technologies delivers the performance, capacity and reliability needed to handle high-intensity workloads in 24×7 multi-user data center environments.Grow Capacity while Lowering CostsWestern Digital’s energy-assisted perpendicular magnetic recording (ePMR) technology enables customers to grow capacities while lowering TCO (total cost of ownership) including both $/TB and OpEx.Rapid qualification and integrationLeveraging hardware designs from generations of highly successful products ensures easy qualification, seamless integration and rapid adoption by existing customers.Reliability You Can TrustBuilt off the same platform that is deployed in thousands of data centers around the world, these drives deliver superior dependability and field-proven reliability for hassle free data storage.Increase Density with Low PowerWestern Digital’s Triple-Stage Actuator (TSA) increases tracks-per-inch (TPI) while providing greater control over the actuator arm, enabling the highest capacities with low power.Meet Eco Goals with HeliumThe stable internal environment created by our HelioSeal® technology enables this high-capacity helium drive to deliver one of the lowest power profiles in the industry.Protected Against Vibration & ShockDisturbances caused by increased vibration are anticipated and proactively counteracted by Rotation Vibration (RV) sensors and subtle shock events are automatically detected by multi-axis shock sensors and compensated for with dynamic fly height technology to maintain performance and protect data.Trusted Reliability, Quality and World-Class SupportAs an industry-leading hard drive manufacturer, Western Digital stands behind their Ultrastar hard drives with the assurance of a projected 2.5M-hour MTBF rating.

Engineered to handle high-intensity workloads with proven technologyUltrastar Data Center HC555 hard drives are engineered to deliver the large capacity, strong performance and proven reliability needed to handle high-intensity workloads in 24×7 multi-user data center environments.Handle Data Center Workloads with Proven TechnologyThe combination of field-proven hardware with the latest innovative technologies delivers the performance, capacity and reliability needed to handle high-intensity workloads in 24×7 multi-user data center environments.Grow Capacity while Lowering CostsWestern Digital’s energy-assisted perpendicular magnetic recording (ePMR) technology enables customers to grow capacities while lowering TCO (total cost of ownership) including both $/TB and OpEx.Rapid qualification and integrationLeveraging hardware designs from generations of highly successful products ensures easy qualification, seamless integration and rapid adoption by existing customers.Reliability You Can TrustBuilt off the same platform that is deployed in thousands of data centers around the world, these drives deliver superior dependability and field-proven reliability for hassle free data storage.Increase Density with Low PowerWestern Digital’s Triple-Stage Actuator (TSA) increases tracks-per-inch (TPI) while providing greater control over the actuator arm, enabling the highest capacities with low power.Meet Eco Goals with HeliumThe stable internal environment created by our HelioSeal® technology enables this high-capacity helium drive to deliver one of the lowest power profiles in the industry.Protected Against Vibration & ShockDisturbances caused by increased vibration are anticipated and proactively counteracted by Rotation Vibration (RV) sensors and subtle shock events are automatically detected by multi-axis shock sensors and compensated for with dynamic fly height technology to maintain performance and protect data.Trusted Reliability, Quality and World-Class SupportAs an industry-leading hard drive manufacturer, Western Digital stands behind their Ultrastar hard drives with the assurance of a projected 2.5M-hour MTBF rating.

Engineered to handle high-intensity workloads with proven technologyUltrastar Data Center HC555 hard drives are engineered to deliver the large capacity, strong performance and proven reliability needed to handle high-intensity workloads in 24×7 multi-user data center environments.Handle Data Center Workloads with Proven TechnologyThe combination of field-proven hardware with the latest innovative technologies delivers the performance, capacity and reliability needed to handle high-intensity workloads in 24×7 multi-user data center environments.Grow Capacity while Lowering CostsWestern Digital’s energy-assisted perpendicular magnetic recording (ePMR) technology enables customers to grow capacities while lowering TCO (total cost of ownership) including both $/TB and OpEx.Rapid qualification and integrationLeveraging hardware designs from generations of highly successful products ensures easy qualification, seamless integration and rapid adoption by existing customers.Reliability You Can TrustBuilt off the same platform that is deployed in thousands of data centers around the world, these drives deliver superior dependability and field-proven reliability for hassle free data storage.Increase Density with Low PowerWestern Digital’s Triple-Stage Actuator (TSA) increases tracks-per-inch (TPI) while providing greater control over the actuator arm, enabling the highest capacities with low power.Meet Eco Goals with HeliumThe stable internal environment created by our HelioSeal® technology enables this high-capacity helium drive to deliver one of the lowest power profiles in the industry.Protected Against Vibration & ShockDisturbances caused by increased vibration are anticipated and proactively counteracted by Rotation Vibration (RV) sensors and subtle shock events are automatically detected by multi-axis shock sensors and compensated for with dynamic fly height technology to maintain performance and protect data.Trusted Reliability, Quality and World-Class SupportAs an industry-leading hard drive manufacturer, Western Digital stands behind their Ultrastar hard drives with the assurance of a projected 2.5M-hour MTBF rating.

Future of More. Plus OneThe world’s first 11-disk CMR HDD platform delivers unbeaten capacity of up to 26TB1 to help quench customer’s insatiable demand for increased storage density in the existing storage footprint.Rapid Qualification and Rock Solid ReliabilityLeveraging field-proven hardware and firmware designs from generations of highly successful products ensures easy qualification, seamless integration and rapid adoption while maintaining superior dependability and reliability.Maximum Rack-Space EfficiencyThe higher storage density provided by 11 disks combined with our energy-assisted Perpendicular Magnetic Recording (ePMR) technologies, which increase tracks-per-inch (TPI), allow data centers to maximize their storage efficiency.Protected Against Vibration & ShockOur exclusive Rotational Vibration Safeguard (RVS) uses dual sensors to anticipate and counteract disturbances, maintaining peak performance in high-vibration environments. Combined with Dynamic Fly Height technology, Western Digital offers exceptional drive reliability and protection from unexpected shock events.Engineered with Industry-Leading TechnologyWestern Digital’s proprietary OptiNAND™ technology leverages integrated iNAND® embedded flash to perform key housekeeping functions, freeing up more capacity and improving the overall drive performance.Powerful Performance and ResiliencyChoose ArmorCache™ write cache disabled (WCD) mode for increased random write performance or select write cache enable (WCE) mode to protect cached data in case of Emergency Power Off (EPO) or unexpected power loss scenarios.Meet Eco Goals with HeliumChoose ArmorCache™ write cache disabled (WCD) mode for increased random write performance or select write cache enable (WCE) mode to protect cached data in case of Emergency Power Off (EPO) or unexpected power loss scenarios.Trusted Reliability, Quality and World-Class SupportAs an industry-leading hard drive manufacturer, Western Digital stands behind their Ultrastar hard drives with the assurance of a projected 2.5M-hour MTBF2 rating, a 5-year limited warranty3 and world-class support services to help create environments for data to thrive.