P49911-001 HPE InfiniBand NDR 2x400Gb OSFP Multi-Mode 50m Switch-Side Transceiver

HPE P49911-001 InfiniBand NDR switch-side transceiver 

The HPE P49911-001 InfiniBand NDR 2x400Gb OSFP Multi-Mode 50m switch-side transceiver represents a highly specialized optical interface designed for next-generation high performance computing and advanced data center architectures. Positioned within the InfiniBand NDR ecosystem, this transceiver enables extremely high bandwidth connectivity between switches and other infrastructure components, supporting demanding workloads such as artificial intelligence training, large-scale simulations, real-time analytics, and complex scientific computing. By combining 2x400Gb capacity in an OSFP form factor with multi-mode fiber support up to 50 meters, it offers a balanced solution that delivers both performance and deployment flexibility in dense, performance-critical environments.

As part of the broader category of InfiniBand NDR optical transceivers, the HPE P49911-001 is engineered to meet the stringent latency, throughput, and reliability requirements that modern clusters and fabrics demand. InfiniBand NDR technology pushes data rates to new levels, and this switch-side transceiver is optimized to integrate seamlessly with HPE networking platforms and compatible InfiniBand switches. Its multi-mode design simplifies cabling in short-reach scenarios, while the OSFP interface ensures compatibility with high-density switch ports that are increasingly common in hyperscale and enterprise data centers. The result is a transceiver category that focuses on maximizing link efficiency, minimizing signal loss, and enabling scalable bandwidth growth.

InfiniBand NDR technology and performance characteristics

InfiniBand NDR represents one of the latest generations of InfiniBand technology, designed to deliver extremely high data rates with low latency and robust congestion management. In this category, transceivers such as the HPE P49911-001 are built to support the advanced signaling and encoding schemes required to achieve 400Gb per lane while maintaining signal integrity over multi-mode fiber. The NDR standard focuses on efficient use of bandwidth, improved link utilization, and enhanced reliability, making it ideal for environments where microseconds of latency and consistent throughput can significantly impact application performance.

The performance characteristics of InfiniBand NDR transceivers include support for advanced modulation techniques, optimized forward error correction, and precise clock recovery mechanisms. These features work together to ensure that high-speed data streams remain stable and error-free even in dense, high-interference environments. For the HPE P49911-001, this translates into predictable link behavior across its 2x400Gb configuration, enabling operators to design fabrics that scale horizontally and vertically without sacrificing reliability. The multi-mode 50m reach is particularly well suited for intra-rack and inter-rack connections in large clusters, where cable management and physical layout can be complex.

OSFP form factor and switch-side integration

The OSFP form factor is a key element of the HPE P49911-001 InfiniBand NDR 2x400Gb transceiver category. OSFP is designed to support very high data rates while maintaining manageable thermal and mechanical characteristics, making it ideal for dense switch configurations. In the context of switch-side transceivers, OSFP modules provide a compact yet powerful interface that can be deployed across multiple ports, enabling high port density and flexible fabric design. The HPE P49911-001 leverages this form factor to deliver 2x400Gb capacity in a single module, allowing operators to scale bandwidth without significantly increasing the physical footprint of their switches.

Switch-side integration is central to this category, as the transceiver is intended to reside in the core switching infrastructure rather than at the server or adapter side. This orientation allows the HPE P49911-001 to serve as a critical link between spine and leaf switches, aggregation layers, or specialized interconnect nodes. By using OSFP modules, HPE ensures that the transceiver can be easily inserted, removed, and replaced, supporting hot-swappable maintenance and upgrades. This is particularly important in environments where downtime must be minimized and where fabrics may need to be reconfigured to accommodate new workloads or expansion.

Multi-mode 50m connectivity and data center cabling

Multi-mode fiber connectivity up to 50 meters is a defining characteristic of the HPE P49911-001 InfiniBand NDR transceiver category. Multi-mode fiber is widely used in data centers for short-reach connections due to its cost effectiveness, ease of installation, and compatibility with existing cabling infrastructure. By supporting 50m multi-mode links, the transceiver enables flexible deployment across racks and rows, allowing operators to design fabrics that connect switches within the same row or across adjacent rows without requiring single-mode fiber or specialized long-reach optics.

The 50m reach is particularly well suited for high-density clusters where switches are located in close proximity but still require robust, high-bandwidth links. In such environments, multi-mode fiber simplifies cable management and reduces overall deployment costs. The HPE P49911-001 category takes advantage of these benefits by providing reliable NDR-level performance over multi-mode fiber, ensuring that each 2x400Gb link can operate at full capacity without signal degradation. This makes it an attractive option for organizations that want to upgrade their fabrics to NDR speeds while leveraging existing multi-mode cabling.

Use cases for HPE InfiniBand NDR 2x400Gb OSFP switch-side transceivers

The HPE P49911-001 InfiniBand NDR 2x400Gb OSFP Multi-Mode 50m switch-side transceiver category is tailored for a wide range of high performance and data-intensive use cases. One of the primary applications is in large-scale high performance computing clusters, where thousands of nodes must communicate efficiently to execute complex simulations, modeling tasks, and scientific workloads. In these environments, the transceiver enables high-bandwidth links between core switches, ensuring that data can move quickly and reliably across the fabric. This is essential for maintaining scalability and achieving the performance targets that HPC applications demand.

Another key use case is in artificial intelligence and machine learning training clusters, where GPUs and accelerators generate massive volumes of data that must be exchanged rapidly between nodes. InfiniBand NDR technology, combined with the 2x400Gb capacity of the HPE P49911-001, provides the bandwidth and low latency required to keep training pipelines fed with data and gradients. Switch-side transceivers in this category help build the backbone of AI fabrics, linking top-of-rack switches to spine switches and enabling efficient communication between accelerator pods. This contributes to faster training times, improved model convergence, and more efficient use of expensive compute resources.

High performance computing and scientific workloads

In the realm of high performance computing, the HPE P49911-001 InfiniBand NDR transceiver category is particularly valuable for building and expanding large clusters dedicated to scientific research, engineering simulations, and complex modeling tasks. These workloads often involve tightly coupled parallel applications that rely on fast, low-latency communication between nodes. InfiniBand NDR technology provides the necessary transport characteristics, and the 2x400Gb switch-side transceiver ensures that core switches can handle the aggregate bandwidth generated by thousands of compute nodes.

Scientific workloads such as climate modeling, computational fluid dynamics, molecular dynamics, and astrophysics simulations can benefit significantly from the high bandwidth and low latency offered by this transceiver category. By enabling efficient communication between nodes and across racks, the HPE P49911-001 helps reduce time-to-solution and improves overall cluster utilization. Researchers and engineers can run larger, more detailed simulations and explore more complex parameter spaces, knowing that the underlying fabric can support the required data movement.

AI, machine learning, and accelerator-based clusters

Artificial intelligence and machine learning workloads place unique demands on data center fabrics, particularly when large numbers of GPUs or specialized accelerators are involved. Training deep neural networks, running reinforcement learning experiments, and performing large-scale inference all require high-bandwidth, low-latency communication between nodes. The HPE P49911-001 InfiniBand NDR 2x400Gb OSFP Multi-Mode 50m switch-side transceiver category is designed to meet these demands by providing robust links between switches in AI clusters.

In accelerator-based clusters, data must be exchanged rapidly between GPUs, CPUs, and storage systems to keep training pipelines efficient. InfiniBand NDR technology offers the necessary transport characteristics, and the 2x400Gb transceiver ensures that each link can handle the aggregate bandwidth generated by multiple accelerators. Switch-side transceivers in this category are used to build the backbone of AI fabrics, connecting top-of-rack switches to spine switches and enabling efficient communication between accelerator pods. This helps reduce training times, improve resource utilization, and support larger, more complex models.

Data analytics, storage fabrics, and enterprise workloads

Beyond HPC and AI, the HPE P49911-001 InfiniBand NDR transceiver category is also relevant for large-scale data analytics platforms, storage fabrics, and enterprise workloads that require high-speed interconnects. Distributed analytics engines, data warehouses, and real-time processing systems often rely on fast communication between storage nodes, compute nodes, and application servers. InfiniBand NDR links can provide the necessary bandwidth and low latency to support these workloads, and the 2x400Gb switch-side transceiver plays a central role in building these fabrics.

Storage fabrics, in particular, can benefit from the high bandwidth offered by this transceiver category. As organizations deploy high-performance storage systems, including NVMe-based arrays and parallel file systems, the need for fast, reliable links between storage controllers and compute nodes becomes critical. The HPE P49911-001 transceiver enables these links, ensuring that data can be read and written quickly across the fabric. This contributes to improved application performance, reduced I/O bottlenecks, and more efficient use of storage resources.

Thermal management and power efficiency

Thermal management is a key aspect of high-speed transceiver design, especially in dense switch configurations where multiple modules are operating simultaneously. The HPE P49911-001 InfiniBand NDR transceiver category is engineered to manage heat effectively, using optimized mechanical design, efficient components, and appropriate cooling strategies. This ensures that the transceivers can operate at full capacity without overheating or causing thermal issues within the switch chassis.

Power efficiency is closely related to thermal management, as high power consumption can lead to increased heat generation and higher operating costs. The HPE P49911-001 category focuses on minimizing power draw while maintaining NDR-level performance. This is achieved through careful component selection, optimized signaling, and efficient modulation techniques. As a result, operators can deploy high-speed transceivers across multiple switches without significantly increasing power budgets or cooling requirements.

Deployment scenarios in modern data centers

In modern data centers, deployment scenarios for the HPE P49911-001 InfiniBand NDR transceiver category span a wide range of architectures and layouts. One common scenario involves using the transceivers to connect spine and leaf switches in a multi-tier fabric, providing high-bandwidth links that support large numbers of top-of-rack switches and connected nodes. In this configuration, the 2x400Gb capacity enables efficient aggregation of traffic from multiple racks, ensuring that the core of the fabric can handle the demands of HPC, AI, and analytics workloads.

Another deployment scenario involves using the transceivers to build dedicated interconnect fabrics for specialized clusters, such as GPU-based AI training environments or storage-focused infrastructures. In these cases, the switch-side transceivers provide the backbone links that connect different parts of the cluster, enabling efficient communication between accelerator pods, storage arrays, and compute nodes. The multi-mode 50m connectivity supports flexible physical layouts, allowing operators to design clusters that optimize both performance and space utilization.