P18670-B21 HPE Dual Port SFP28 NIC 10/25GB Smart Network Interface Card

Overview of the HPE P18670-B21 2 Ports Network Adapter

The HPE P18670-B21 delivers robust, enterprise‑grade connectivity engineered for modern data center environments. This dual‑port SFP28 adapter supports accelerated throughput, optimized latency, and dependable performance across demanding workloads.

General Specifications

• Manufacturer: HPE
• Part Number: P18670-B21
• Product Type: Dual‑port Network Adapter

Technical Specifications

• Gen4 PCIe bus for elevated throughput and reduced latency
• Stable electrical design supporting sustained performance under heavy I/O loads
• Up to 25 Gb/s per port for high‑speed data transmission
• 100 Gb/s total bi‑directional theoretical bandwidth
• Efficient link utilization for storage, compute, and clustered environments

Offload Capabilities

• Advanced tunneling offloads for VXLAN and NVGRE
• Stateless TCP/UDP/IP acceleration
• Optimized packet processing for virtualized infrastructures

Infrastructure Integration

• Ideal for rack servers, modular systems, and storage appliances
• Supports scalable network architectures and multi‑tenant cloud designs
• Reliable performance under continuous, high‑volume workloads

Highlights at a Glance

• High‑speed transfers up to 25Gb per port
• Dual‑port versatility for redundant or aggregated configurations
• Improved throughput and minimized downtime
• SmartNIC acceleration for optimized CPU utilization

Ideal Use Cases

• Virtualized server clusters
• High‑performance storage networks
• Cloud infrastructure and multi‑tenant environments
• Latency‑sensitive enterprise applications

HPE P18670-B21 Dual Port SFP28 Network Adapter

The HPE P18670-B21 Dual Port SFP28 Smart 10/25GB Network Adapter is an advanced enterprise networking solution designed to deliver high-speed connectivity, efficient data transfer, and flexible network deployment capabilities for modern server infrastructures. This Smart Network Adapter belongs to the next generation of Ethernet connectivity solutions engineered for demanding data center environments, cloud platforms, virtualization systems, and high-performance computing applications. Designed to support both 10 Gigabit Ethernet and 25 Gigabit Ethernet speeds, this adapter provides organizations with a scalable networking foundation that can adapt to increasing bandwidth requirements.

Built with dual-port SFP28 connectivity, the HPE P18670-B21 adapter enables high-performance communication between servers, storage systems, and network devices while maintaining excellent flexibility through optical and direct attach cable compatibility. The adapter is optimized for HPE server platforms and provides advanced networking features that improve workload efficiency, reduce latency, and enhance overall infrastructure performance. By combining multi-speed Ethernet capability with intelligent network management features, this adapter helps businesses create reliable and future-ready data center environments.

Enterprise-Class 10GbE and 25GbE Networking Performance

The HPE P18670-B21 Dual Port SFP28 Smart Network Adapter delivers a powerful combination of 10Gb Ethernet and 25Gb Ethernet connectivity, allowing enterprises to select the appropriate network speed based on application requirements. The transition from traditional 10GbE environments to higher-performance 25GbE infrastructures is simplified through the adapter’s multi-speed functionality, enabling organizations to increase bandwidth without replacing their entire network architecture.

25Gb Ethernet technology provides significant improvements over previous-generation networking standards by increasing throughput while maintaining efficient power consumption and network scalability. The HPE P18670-B21 is designed to support bandwidth-intensive workloads such as virtualization, cloud computing, database applications, software-defined networking, and enterprise storage traffic. Its high-speed architecture enables faster communication between servers and network resources, helping improve application responsiveness and operational efficiency.

Dual Port SFP28 Interface

The dual-port SFP28 interface configuration of the HPE P18670-B21 provides two independent high-speed Ethernet connections through compact SFP28 ports. This design enables flexible network configurations, including dedicated connections for different applications, redundant network paths, and improved traffic management. The SFP28 form factor supports modern cabling technologies and allows administrators to choose between fiber optic modules and direct attach copper solutions depending on deployment requirements.

SFP28 connectivity offers compatibility with a wide range of networking environments while providing the performance needed for enterprise-scale operations. The compact design also helps optimize server expansion space, making it suitable for dense rack server installations where efficient component placement is essential.

Flexible Deployment with SFP28 Transceiver

The HPE P18670-B21 adapter supports SFP28 transceiver technology, providing administrators with multiple connectivity options for different network distances and infrastructure designs. Optical transceivers can be used for longer-distance connections within large data centers, while direct attach cables provide cost-effective short-range connections between servers and switches.

This flexibility makes the adapter suitable for various environments, including enterprise server rooms, large-scale data centers, private cloud infrastructures, and high-performance computing clusters. The ability to select appropriate cabling options helps organizations design efficient and customized network architectures.

Advanced Smart Network Adapter Technology

The HPE P18670-B21 is part of HPE’s Smart Network Adapter family, which incorporates intelligent networking capabilities designed to improve server connectivity and simplify infrastructure management. Smart Network Adapters provide enhanced control, optimization features, and improved network efficiency compared with standard network interface solutions.

By integrating intelligent networking functionality directly into the adapter, the HPE P18670-B21 helps reduce processing overhead on server CPUs. This allows system resources to remain available for critical applications while networking operations are handled more efficiently. These capabilities are especially beneficial in virtualized environments where multiple workloads share the same physical server resources.

Optimized Performance for Virtualized Data Centers

Modern enterprises rely heavily on virtualization technologies to improve resource utilization and simplify IT management. The HPE P18670-B21 Dual Port SFP28 Smart 10/25GB Network Adapter is designed to support virtualization environments by providing high bandwidth, efficient packet processing, and advanced traffic management capabilities.

Virtualized infrastructures require reliable network performance because multiple virtual machines often compete for network resources simultaneously. This adapter helps maintain consistent connectivity by supporting features that improve traffic distribution, workload isolation, and network efficiency. Its dual-port design also enables administrators to configure separate network channels for management traffic, application traffic, storage communication, or virtual machine connectivity.

Enhanced Server Connectivity for Modern Applications

The increasing demand for data-driven applications requires network adapters that can handle continuous high-volume communication. The HPE P18670-B21 provides the bandwidth and reliability required for applications such as enterprise databases, analytics platforms, artificial intelligence workloads, virtualization clusters, and cloud-based services.

With support for high-speed Ethernet connectivity, this adapter helps eliminate network bottlenecks and enables servers to communicate more efficiently with storage systems and external network resources. Improved network performance contributes to faster application processing, reduced response times, and better user experiences.

Designed for High-Density Server Environments

The compact and efficient design of the HPE P18670-B21 makes it well suited for high-density server environments where performance and space optimization are equally important. Data centers often require powerful networking solutions that can deliver increased bandwidth without consuming excessive expansion space or power resources.

This adapter supports the requirements of modern rack servers by providing enterprise networking capabilities in a streamlined PCI Express adapter format. Its efficient architecture allows organizations to increase network performance while maintaining optimized server configurations.

HPE Network Adapter Compatibility and Integration

The HPE P18670-B21 Dual Port SFP28 Smart Network Adapter is engineered for compatibility with selected HPE server platforms, providing seamless integration with HPE infrastructure solutions. Designed according to HPE quality standards, the adapter supports reliable operation within enterprise server environments and helps simplify deployment processes.

Integration with HPE server hardware allows administrators to take advantage of consistent management tools, firmware updates, and enterprise support resources. 

Reliable Hardware Architecture for Enterprise Operations

Enterprise networking equipment must provide consistent performance under continuous workloads. The HPE P18670-B21 features a durable hardware design developed to support demanding operational conditions found in professional data centers. Its reliable construction helps maintain stable connectivity during high-volume data transfers and mission-critical application usage.

The adapter is designed to operate efficiently in environments where uptime and network availability are essential. Whether deployed in enterprise servers, virtualization hosts, or cloud infrastructure, the adapter provides dependable connectivity required for business-critical applications.

Efficient Data Transfer and Reduced Network Bottlenecks

High-speed Ethernet adapters play an important role in reducing performance limitations caused by insufficient network bandwidth. The HPE P18670-B21 helps improve data movement between computing resources, storage platforms, and network switches by providing fast and efficient Ethernet communication.

The increased bandwidth available through 25GbE connectivity allows organizations to support larger data volumes and more demanding workloads. This makes the adapter an ideal choice for environments experiencing growing data requirements and increasing application complexity.

Supporting Scalable Infrastructure Growth

Infrastructure scalability is a major consideration for modern businesses. The HPE P18670-B21 supports future expansion by providing networking technology that can accommodate increasing performance demands. Organizations can deploy this adapter as part of a gradual transition toward higher-speed Ethernet environments without requiring immediate replacement of existing infrastructure.

Its ability to support multiple Ethernet speeds provides investment protection by allowing businesses to upgrade network performance as their requirements evolve. This scalability makes the adapter suitable for long-term enterprise infrastructure planning.

Applications of HPE P18670-B21 Smart Ethernet Adapter

The HPE P18670-B21 Dual Port SFP28 Smart 10/25GB Network Adapter is designed for a wide range of enterprise applications that require fast, reliable, and flexible network connectivity. It supports environments where efficient data communication is essential for maintaining operational performance.

Cloud Computing and Data Center Workloads

Cloud computing environments require networking components capable of handling large-scale data exchange between servers, storage systems, and users. The HPE P18670-B21 provides the bandwidth required for cloud platforms by supporting high-speed Ethernet communication and efficient resource utilization.

The adapter helps cloud service providers and enterprise IT departments create responsive infrastructure capable of supporting numerous applications and workloads. Its performance characteristics make it suitable for private cloud deployments, hybrid environments, and large-scale virtualization platforms.

Storage Networking and Data Intensive Applications

Data-intensive applications require fast communication between servers and storage resources. The HPE P18670-B21 enables efficient network connectivity for storage-related workloads, helping improve data access speeds and overall system responsiveness.

Organizations using advanced storage solutions can benefit from the adapter’s high bandwidth capabilities, particularly in environments where large files, databases, analytics workloads, and enterprise applications generate significant network traffic.

Enterprise Database and Analytics Support

Database platforms and analytics applications depend on fast network communication to process and exchange information efficiently. The HPE P18670-B21 provides the connectivity performance required for these environments, helping servers transfer large amounts of data quickly and reliably.

By supporting higher network speeds, the adapter contributes to improved application efficiency and enables organizations to handle increasingly complex workloads with greater confidence.

Operational Advantages

The HPE P18670-B21 Smart Network Adapter provides operational advantages through intelligent networking features, flexible configuration options, and enterprise-focused design. These capabilities help administrators manage network resources more effectively while maintaining high levels of performance and reliability.

Improved Network Efficiency and Resource Utilization

Efficient network resource utilization is essential for maximizing infrastructure performance. The HPE P18670-B21 helps optimize communication between connected systems by supporting advanced Ethernet functionality and intelligent traffic handling.

Improved efficiency reduces unnecessary network congestion and allows servers to deliver better performance across demanding applications. This makes the adapter a valuable component for organizations seeking to enhance their existing data center networking capabilities.

Future-Ready Ethernet Connectivity

The HPE P18670-B21 represents a future-ready networking solution designed to meet the evolving needs of enterprise IT environments. With support for both 10GbE and 25GbE speeds, the adapter provides the flexibility required for gradual infrastructure upgrades and changing workload demands.

As organizations continue adopting cloud services, virtualization, and data-intensive technologies, high-performance network adapters become increasingly important. The HPE P18670-B21 delivers the connectivity foundation required for modern and scalable computing environments.