538113-B21 HPE 10GB Sfp+ Ethernet 10 Gigabit Network Expansion Module

HPE 538113-B21 10 Gigabit Ethernet Expansion Module

Designed specifically for HPE BladeSystem C-Class enclosures, this expansion module enables seamless integration of high-speed 10 Gigabit Ethernet (10GbE) links using SFP+ transceivers, ensuring scalable and efficient data center networking performance.

This pass-thru module architecture eliminates the complexity of internal switching by providing a direct one-to-one physical connection between blade server interconnects and external switches. With support for up to 16 SFP+ ports, the module is optimized for environments that require predictable latency, simplified management, and maximum throughput consistency across blade-based infrastructures.

Enterprise-Grade BladeSystem

Direct Attach Pass-Through Design Philosophy

The HPE 538113-B21 module is built around a pass-through architecture that avoids embedded switching logic. Instead of processing and switching traffic internally, it enables direct external switch connectivity. This design reduces overhead, minimizes latency, and enhances deterministic network performance for mission-critical applications.

By removing internal switching layers, the pass-thru module allows data packets to flow directly from blade servers to external top-of-rack or end-of-row switches. This architecture is especially beneficial in environments where network engineers prefer centralized switching management rather than distributed switching within blade enclosures.

BladeSystem C-Class Integration

Engineered for seamless compatibility with HPE BladeSystem C-Class enclosures, the module integrates into the interconnect bays of supported chassis. Once installed, it provides a structured mapping between blade server NICs and external 10GbE SFP+ ports, ensuring consistent connectivity across all installed blades.

The module aligns with the BladeSystem infrastructure design principles, supporting hot-plug installation and efficient cable management while maintaining high-density server deployment capabilities within enterprise data centers.

10Gb Ethernet Performance and Scalability

High-Speed Data Transmission Capabilities

The HPE 538113-B21 pass-thru module supports 10 Gigabit Ethernet speeds per port, enabling high-throughput communication for modern workloads such as virtualization, cloud computing, database clusters, and high-performance computing (HPC). Each SFP+ port is designed to maintain stable signal integrity and low error rates under sustained traffic conditions.

With 16 dedicated SFP+ interfaces, the module offers substantial bandwidth aggregation potential, allowing multiple blade servers to operate simultaneously without network congestion. This makes it ideal for scalable enterprise environments where workload density continues to increase.

Low Latency Network Path Optimization

Latency reduction is a critical advantage of pass-through networking modules. The HPE 538113-B21 minimizes packet processing delays by eliminating intermediate switching logic. This direct connectivity ensures that network traffic experiences near wire-speed performance from server to external switch.

Such low-latency characteristics are essential for applications such as financial trading systems, real-time analytics platforms, and distributed computing frameworks where microsecond-level delays can impact performance outcomes.

SFP+ Port Architecture and Connectivity Options

16-Port SFP+ Interface

The module is equipped with 16 SFP+ ports, providing high-density connectivity for blade server environments. Each port supports modular SFP+ transceivers, allowing administrators to choose from a variety of optical and copper connectivity options based on distance, bandwidth, and infrastructure requirements.

This flexible port design ensures compatibility with short-range multimode fiber, long-range single-mode fiber, and direct attach copper (DAC) cables, making it adaptable to diverse network topologies.

Transceiver Flexibility and Compatibility

The use of SFP+ cages enables extensive interoperability with industry-standard transceivers. Data center administrators can deploy 10GbE SR, LR, or DAC modules depending on their deployment scenario. This flexibility allows organizations to optimize cost efficiency while maintaining high performance.

Compatibility with multiple transceiver types ensures that the module can be integrated into both legacy and modern network infrastructures without requiring extensive redesign of existing cabling systems.

Data Center Integration and Deployment Scenarios

Virtualized Infrastructure Environments

The HPE 538113-B21 pass-thru module is widely used in virtualized environments where multiple virtual machines share underlying physical blade resources. Its high-bandwidth capability ensures that hypervisors such as VMware ESXi, Microsoft Hyper-V, and KVM-based systems can maintain consistent network performance across virtual workloads.

By providing direct 10GbE connections, the module reduces bottlenecks commonly associated with traditional 1GbE infrastructure, thereby improving VM mobility and workload balancing efficiency.

Cloud Computing and Private Cloud Deployments

In private cloud environments, predictable network performance is essential for service reliability. The pass-thru module supports cloud architectures by delivering direct external switching access, allowing cloud orchestration systems to manage network traffic efficiently across distributed compute nodes.

Its high port density also supports multi-tenant environments where segmentation and isolation of workloads are required without compromising throughput or latency.

High-Performance Computing (HPC) Applications

HPC workloads require extremely fast and consistent network communication between compute nodes. The HPE 538113-B21 module ensures that blade servers can communicate with external high-speed fabrics without internal switching delays.

This architecture is particularly beneficial for scientific simulations, engineering computations, and large-scale data modeling applications where inter-node communication speed directly impacts computational efficiency.

Reliability

Enterprise-Grade Build Quality

The module is built to meet enterprise data center standards, ensuring long-term reliability under continuous operation. Its robust hardware design supports high thermal efficiency and stable electrical performance, even in densely populated blade enclosures.

Designed for mission-critical deployments, the module undergoes rigorous testing to ensure consistent operation under varying environmental conditions, including temperature fluctuations and sustained traffic loads.

Airflow Efficiency

Efficient thermal management is essential in blade system environments. The HPE 538113-B21 is engineered to maintain optimal airflow within the enclosure, preventing overheating and ensuring stable network performance.

Its low power consumption design contributes to reduced heat output, allowing data centers to maintain energy-efficient cooling strategies without compromising performance.

Network Architecture Benefits

Centralized Switching Strategy

By utilizing a pass-thru module, organizations can centralize switching operations at the network core or top-of-rack level. This approach simplifies network architecture and reduces complexity within blade enclosures.

Reduced Network Overhead

The elimination of embedded switching logic reduces processing overhead within the blade chassis. As a result, more compute resources are dedicated to application workloads rather than network processing tasks.

This architecture improves overall system efficiency and allows for more predictable performance scaling as additional blades are added to the system.

Scalability

Expandable Network Capacity

The 16-port SFP+ configuration provides ample room for infrastructure expansion. As organizations grow their compute environments, additional blade servers can be integrated without redesigning the entire network fabric.

This scalability makes the module suitable for growing enterprises, cloud service providers, and research institutions that require flexible infrastructure expansion capabilities.

Compatibility with Evolving Network Standards

While designed primarily for 10GbE environments, the module’s SFP+ interface ensures compatibility with a wide range of evolving transceiver technologies. This allows data centers to upgrade optical components without replacing the underlying pass-thru infrastructure.

Use Cases

Enterprise Data Centers

Large-scale enterprise data centers benefit from the predictable performance and simplified architecture of the HPE 538113-B21 module. Its ability to integrate with existing BladeSystem environments makes it a preferred choice for IT modernization initiatives.

Financial and Transaction Systems

In financial environments where transaction speed and reliability are critical, the low-latency design of the pass-thru module ensures rapid data exchange between trading systems and external networks.

Content Delivery and Media Processing

Media streaming platforms and content delivery networks rely on high-bandwidth connectivity to distribute large volumes of data. The module’s 10GbE capacity supports these workloads efficiently, ensuring smooth content delivery.

Integration with Network Ecosystem Components

Compatibility with External Switch Infrastructure

The module is designed to connect seamlessly with external 10GbE switches, enabling flexible architecture designs that separate compute and network layers for improved scalability.

Interoperability with Storage and Compute Networks

Beyond traditional Ethernet workloads, the module can also support storage networking environments where high-speed connectivity is essential for SAN and NAS systems.