MHQH29C-XTR Mellanox ConnectX-5 EN PCIe 2.0 x8 Network Adapter

Comprehensive Product Overview

The Mellanox MHQH29C-XTR ConnectX-5 EN Network Adapter is designed with a PCIe 2.0 x8 interface, offering enhanced connectivity for users. This interface provides a high-speed connection between the network adapter and the host system, enabling faster data transfer rates and improved overall performance.

General Information

• Manufacturer: Mellanox
• Part Number: MHQH29C-XTR
• Product Type: Dual-Port Network Adapter

Technical Highlights

• Designed as a plug-in card for seamless integration
• Bus Type: PCI Express 2.0 x8
• Technology: Wired
• Protocols Supported: 10 Gigabit Ethernet, InfiniBand, Fibre Channel over Ethernet (FCoE), Fibre Channel over InfiniBand (FCoIB)
• Data Throughput: 40 Gbps
• Table Capacity: 256 entries

Transport Protocols

• TCP/IP, UDP/IP, IPoIB, uDAPL

Advanced Features

• SR-IOV (Single Root I/O Virtualization)
• RDMA (Remote Direct Memory Access) support
• Core-Direct Technology for optimized performance

Networking Enhancements

• VLAN Tagging Support
• InfiniBand QDR Link Compatibility
• Virtual Protocol Interconnect (VPI)
• Quality of Service (QoS) prioritization
• Jumbo Frame Handling
• Link Aggregation Control Protocol (LACP)

Compliance Standards

• IEEE 802.1q, IEEE 802.1p
• IEEE 802.3ad (LACP), IEEE 802.3ae
• IBTA 1.2.1

Expansion & Connectivity

Slot Availability

• Total Expansion Slots: 2 QSFP
• Free Slots: 2 QSFP

Compatibility

• Supported Slot: PCI Express 2.0 x8

Mellanox MHQH29C-XTR ConnectX-5 PCIe Network Adapter

The Mellanox MHQH29C-XTR ConnectX-5 EN PCIe 2.0 x8 Network Adapter is a high-performance Ethernet connectivity solution engineered for enterprise servers, cloud infrastructure, virtualization environments, high-performance computing platforms, and modern data centers that require exceptional throughput, ultra-low latency, and advanced networking acceleration. Designed around the proven ConnectX-5 architecture, this dual-port SFP28 adapter delivers advanced Ethernet capabilities while providing the reliability and scalability required for demanding workloads.

As network traffic continues to increase across enterprise and cloud deployments, organizations require network interface cards capable of supporting high-bandwidth applications, virtualization technologies, storage traffic, and latency-sensitive services. The ConnectX-5 EN adapter addresses these requirements through a combination of advanced hardware acceleration technologies, intelligent packet processing capabilities, and support for modern Ethernet standards.

The dual-port design enables increased connectivity flexibility, network redundancy, bandwidth aggregation, and efficient traffic segmentation. By incorporating two SFP28 interfaces, the adapter can be deployed in various networking topologies while supporting high-speed Ethernet communication between servers, storage systems, switches, and clustered computing resources.

Advanced ConnectX-5 Architecture

The foundation of the Mellanox MHQH29C-XTR adapter is the ConnectX-5 Ethernet controller, a sophisticated networking processor developed to maximize data movement efficiency while minimizing CPU overhead. The architecture incorporates dedicated acceleration engines that offload networking functions from the host processor, allowing server resources to remain focused on application execution.

This hardware-based acceleration approach improves system efficiency by reducing the processing burden associated with packet handling, network protocol management, and data transfer operations. The result is enhanced overall server performance, improved responsiveness, and better utilization of computing resources.

Optimized

The adapter incorporates advanced packet processing technologies designed to handle high packet rates efficiently. Hardware-assisted processing mechanisms accelerate the movement of data between network interfaces and system memory, reducing latency and increasing throughput consistency across demanding workloads.

Intelligent packet classification, filtering, steering, and forwarding capabilities further enhance network efficiency by enabling precise traffic management and workload distribution. These capabilities are particularly valuable in virtualized infrastructures where multiple applications and virtual machines share networking resources.

Enhanced Throughput Efficiency

ConnectX-5 technology is engineered to maximize bandwidth utilization while maintaining low CPU utilization levels. Through advanced DMA operations, optimized memory access patterns, and efficient queue management mechanisms, the adapter supports high-speed communication without creating bottlenecks within the server platform.

Dual SFP28 Port 

Flexible Connectivity Options

The Mellanox MHQH29C-XTR features two SFP28 network ports, providing flexible deployment options for enterprise networking environments. The dual-port configuration allows administrators to implement redundant network paths, load balancing strategies, and bandwidth aggregation schemes that enhance both performance and availability.

SFP28 connectivity offers compatibility with a broad range of optical transceivers and direct-attach copper cables, enabling deployment across various network distances and infrastructure designs. This flexibility simplifies integration into existing environments while supporting future network expansion requirements.

Multi-Application Deployment

Dual-port adapters are frequently deployed in environments requiring separate traffic streams for management, storage, virtualization, and application communications. The availability of two independent network interfaces enables efficient network segmentation and improved security through dedicated traffic pathways.

Organizations can allocate individual ports to specific workloads, ensuring predictable network performance and reducing congestion caused by competing applications. This approach supports scalable infrastructure growth while maintaining operational efficiency.

Redundancy and Failover Support

Network availability is a critical requirement in enterprise computing environments. The dual-port architecture supports redundancy configurations that help maintain connectivity during link failures or maintenance activities. Failover mechanisms can automatically redirect traffic through alternate network paths, minimizing service disruptions and maintaining business continuity.

PCI Express Interface Integration

PCIe 2.0 x8 Connectivity

The adapter utilizes a PCI Express 2.0 x8 interface that provides substantial bandwidth between the network controller and host system. The multi-lane PCIe architecture ensures efficient communication between networking hardware and server memory, supporting high-throughput data transfers and low-latency operations.

The x8 lane configuration offers sufficient bandwidth capacity for demanding networking workloads while maintaining compatibility with a wide range of enterprise server platforms. This compatibility simplifies deployment across various hardware environments and infrastructure generations.

Host System Communication Efficiency

Efficient communication between the network adapter and host system is essential for achieving optimal networking performance. The PCIe interface facilitates rapid data movement, reduced transaction overhead, and effective utilization of available bandwidth resources.

Advanced bus mastering capabilities enable direct memory access operations that bypass unnecessary CPU involvement, contributing to improved server efficiency and reduced processing latency.

Scalable Server Integration

The PCIe-based design supports deployment across multiple server configurations, including rack servers, blade systems, storage appliances, virtualization hosts, and hyper-converged infrastructure platforms. This flexibility makes the adapter suitable for a broad range of enterprise networking applications.

Low-Latency Networking Performance

Latency Optimization Technologies

Modern applications frequently depend on low-latency communication for optimal operation. The ConnectX-5 architecture incorporates numerous latency reduction mechanisms designed to accelerate packet transmission and reception while minimizing processing delays.

Hardware acceleration technologies reduce software intervention requirements, enabling faster packet delivery and improved responsiveness for time-sensitive workloads. Applications benefiting from low-latency networking include financial trading systems, real-time analytics platforms, clustered databases, and distributed computing environments.

Accelerated Data Path Processing

The adapter employs optimized data path mechanisms that streamline communication between network interfaces and host memory. By reducing packet processing overhead and accelerating data movement operations, the adapter helps maintain consistent low-latency performance even under heavy traffic conditions.

Deterministic Network Behavior

Predictable network performance is essential for mission-critical applications. The advanced architecture of the MHQH29C-XTR supports deterministic packet handling, enabling applications to maintain consistent response times and service quality levels across varying workload conditions.

Virtualization Acceleration Features

Virtual Machine Networking Support

Virtualized environments place significant demands on networking infrastructure due to the presence of multiple virtual machines sharing physical resources. The ConnectX-5 adapter includes advanced virtualization acceleration technologies that improve virtual machine networking efficiency while reducing host CPU utilization.

Hardware-assisted virtualization capabilities enable virtual machines to achieve near-native networking performance, supporting demanding workloads without compromising scalability or resource utilization.

SR-IOV Technology

Single Root I/O Virtualization enables direct assignment of virtual functions to virtual machines, reducing hypervisor overhead and improving networking efficiency. This capability allows virtualized workloads to benefit from enhanced throughput, reduced latency, and improved scalability.

By providing virtual machines with direct access to hardware resources, SR-IOV helps eliminate bottlenecks commonly associated with software-based networking implementations.

Network Resource Isolation

The adapter supports advanced resource isolation mechanisms that enable administrators to allocate networking resources among virtual machines, containers, and applications. Resource allocation controls contribute to predictable performance and improved infrastructure management.

Containerized Workload Optimization

Containerized applications continue to play an increasingly important role in modern IT infrastructures. The ConnectX-5 architecture supports container networking acceleration technologies that improve communication efficiency within Kubernetes clusters, microservices architectures, and cloud-native deployments.

Data Center Networking Applications

Cloud Infrastructure Deployment

Cloud environments require networking solutions capable of supporting large-scale multi-tenant operations, dynamic workload migration, and high-density virtualization. The MHQH29C-XTR adapter provides the bandwidth, scalability, and reliability necessary for cloud infrastructure deployments.

Its advanced networking capabilities support efficient communication between compute nodes, storage resources, orchestration platforms, and management systems, contributing to overall cloud service performance.

Enterprise Server Networking

Enterprise servers frequently host mission-critical applications that depend on reliable and high-performance networking. The ConnectX-5 adapter delivers enterprise-class connectivity suitable for application servers, database servers, virtualization hosts, and storage systems.

By supporting advanced traffic management and acceleration technologies, the adapter helps organizations maintain service quality while accommodating growing data volumes and user demands.

High-Density Computing Environments

Modern data centers often deploy high-density server configurations designed to maximize computing capacity within limited physical space. The efficient design of the MHQH29C-XTR supports these environments by delivering high networking performance without requiring excessive power or cooling resources.

Storage Networking Capabilities

Storage Traffic Acceleration

Storage-intensive applications generate significant network traffic that can impact overall infrastructure performance. The ConnectX-5 adapter incorporates technologies that optimize storage communications, helping to accelerate data transfers between servers and storage systems.

Efficient storage networking contributes to faster backup operations, improved database responsiveness, enhanced virtualization performance, and reduced application wait times.

Networked Storage Infrastructure

The adapter is suitable for deployment within network-attached storage environments, software-defined storage platforms, distributed file systems, and enterprise storage clusters. Its advanced Ethernet capabilities enable efficient movement of large datasets across network infrastructures.

Data Movement Optimization

High-performance storage applications require rapid and reliable data movement. Advanced packet handling technologies and efficient memory access mechanisms help maximize transfer efficiency while minimizing latency and CPU consumption.

Security and Reliability Technologies

Enterprise-Class Reliability

The ConnectX-5 EN adapter is engineered for continuous operation within demanding enterprise environments. Robust hardware design, advanced error detection mechanisms, and comprehensive diagnostics contribute to dependable long-term operation.

Organizations deploying mission-critical applications benefit from reliable networking infrastructure capable of maintaining consistent performance under varying operational conditions.

Error Detection and Correction

Advanced error handling capabilities help maintain data integrity during transmission and reception processes. Built-in monitoring mechanisms identify potential communication issues and support corrective actions that preserve network reliability.

Operational Stability

Stable networking performance is essential for maintaining application availability and user satisfaction. The adapter's architecture supports consistent operation across a wide range of workloads, traffic patterns, and deployment scenarios.

Scalability

Growing Infrastructure Requirements

As organizations expand their digital operations, networking infrastructure must accommodate increasing traffic volumes and evolving application requirements. The Mellanox MHQH29C-XTR adapter provides scalable networking capabilities that support infrastructure growth while maintaining operational efficiency.

Its advanced architecture enables organizations to modernize networking environments without compromising compatibility or deployment flexibility.

Support for Modern Networking Standards

The ConnectX-5 platform incorporates support for contemporary Ethernet technologies, advanced networking protocols, virtualization frameworks, and cloud infrastructure requirements. These capabilities position the adapter as a versatile solution for evolving enterprise environments.

Infrastructure Modernization

Organizations undertaking data center modernization initiatives can leverage the adapter's advanced features to improve networking efficiency, reduce operational complexity, and support emerging technology deployments.