AOC-MH25G-M2S2TM Supermicro SIOM 2-ports 25GbE Mezzanine Card

Supermicro AOC-MH25G-M2S2TM SIOM Mezzanine Card Overview

The Supermicro AOC-MH25G-M2S2TM SIOM Mezzanine Card represents an advanced, high-performance network interface solution tailored for modern enterprise data centers, high-density server environments, and cloud infrastructures. Integrating both 25GbE and 10GbE connectivity options into a single Super I/O Module (SIOM) form factor, this card is designed to deliver superior bandwidth, flexibility, and efficiency while ensuring compatibility with a wide range of Supermicro server platforms.

Key Features of Supermicro AOC-MH25G-M2S2TM

Dual 25GbE SFP28 and Dual 10GbE RJ45 Ports

This mezzanine card is equipped with two 25 Gigabit Ethernet (25GbE) SFP28 ports and two 10 Gigabit Ethernet (10GbE) RJ45 ports, offering exceptional flexibility to support mixed network environments. The 25GbE SFP28 interfaces support high-speed fiber or Direct Attach Copper (DAC) cabling, making them ideal for latency-sensitive, high-throughput applications, while the 10GbE RJ45 ports provide seamless integration with existing copper Ethernet infrastructures.

Intel X550 and Intel 700 Series Controller Technology

At the heart of the Supermicro AOC-MH25G-M2S2TM lies Intel’s proven X550 and Intel 700 series controller technology, ensuring reliable performance, advanced networking features, and hardware-based offloads that improve overall system efficiency. These controllers offer robust features such as SR-IOV (Single Root I/O Virtualization), VMDq (Virtual Machine Device Queues), and advanced offloads for TCP/IP, making them ideal for virtualized and high-performance computing (HPC) environments.

Supermicro Super I/O Module (SIOM) Form Factor

The SIOM form factor is a proprietary mezzanine interface designed by Supermicro to maximize networking and I/O flexibility while maintaining space efficiency. SIOM cards allow system integrators and IT managers to tailor server configurations with optimal networking options without consuming valuable PCIe slots, which can be preserved for other critical components such as storage controllers or GPUs.

Benefits of Deploying the AOC-MH25G-M2S2TM in Enterprise Environments

High Bandwidth and Low Latency Connectivity

With dual 25GbE and dual 10GbE ports, this SIOM card delivers an aggregate bandwidth of up to 70Gbps, ensuring high-speed data transfers for demanding workloads. This makes it particularly suitable for data center aggregation layers, software-defined networking (SDN) architectures, and storage area network (SAN) backbones where performance and reliability are paramount.

Energy Efficiency and Cost-Effective Deployment

Compared to deploying separate network adapters, the integrated design of the AOC-MH25G-M2S2TM reduces power consumption and hardware costs. By consolidating multiple networking interfaces into a single SIOM card, data centers can achieve a lower total cost of ownership (TCO) while enhancing performance.

Seamless Integration and Compatibility

The Supermicro AOC-MH25G-M2S2TM is designed for seamless integration with a wide array of Supermicro server platforms, including their Ultra, BigTwin, GrandTwin, and SuperBlade systems. Its plug-and-play functionality ensures straightforward deployment without extensive system reconfiguration.

Applications and Use Cases for the Supermicro AOC-MH25G-M2S2TM

Cloud and Virtualized Infrastructure

With hardware virtualization support through features like SR-IOV and VMDq, this SIOM card enables efficient network resource allocation for multiple virtual machines (VMs) on a single physical host, reducing overhead and improving throughput in cloud environments. Its high-speed connectivity options also facilitate east-west traffic within hyper-converged infrastructures (HCI).

High-Performance Computing (HPC)

In HPC clusters, where low latency and high bandwidth are essential, the dual 25GbE SFP28 ports provide a reliable interconnect solution for node-to-node communication and distributed computing applications, including scientific simulations, financial modeling, and AI workloads.

Data Center Aggregation and Core Networking

The Supermicro AOC-MH25G-M2S2TM can serve as an aggregation interface card, connecting top-of-rack (ToR) switches and core routers with high-speed 25GbE uplinks while maintaining backward compatibility with 10GbE infrastructure through its dual RJ45 ports. This flexibility simplifies network upgrades and hybrid deployment scenarios.

Technical Specifications

Connectivity

• 2x 25GbE SFP28 ports
• 2x 10GbE RJ45 ports

Controller

• Intel X550/Intel 700 series Ethernet Controller

Form Factor

• Supermicro Super I/O Module (SIOM)

Standards Compliance

• IEEE 802.3by 25Gb Ethernet
• IEEE 802.3ae 10 Gigabit Ethernet
• IEEE 802.3az Energy Efficient Ethernet
• IEEE 802.1Q VLAN tagging
• SR-IOV support

Supported Cables

• SFP28 DAC (Direct Attach Copper)
• Fiber optics with SFP28 transceivers
• Standard Cat6A/Cat7 Ethernet cables for 10GbE RJ45

Operating Environment

• Operating Temperature: 0°C to 55°C
• Storage Temperature: -40°C to 70°C
• Relative Humidity: 5% to 95% non-condensing

The Supermicro SIOM Mezzanine Cards

Enhanced Networking Flexibility

Supermicro’s proprietary SIOM mezzanine cards are engineered to provide optimal networking options in high-density environments where PCIe slot availability is limited. By integrating network adapters into a dedicated mezzanine module, SIOM cards free up valuable PCIe lanes for other system enhancements.

Modular Design for Future-Proofing

The modular nature of SIOM cards allows data centers to future-proof their infrastructure. As network demands evolve, existing Supermicro servers can be easily upgraded by swapping out SIOM cards, facilitating a gradual, cost-effective transition to higher network speeds without replacing entire server systems.

Reduced Infrastructure Footprint

By consolidating multiple network connections into a single, compact module, SIOM cards like the AOC-MH25G-M2S2TM contribute to space efficiency in server racks. This is particularly beneficial for cloud providers, financial services, and enterprise data centers that prioritize maximizing compute and storage density per rack unit (RU).

Compatible Supermicro Server Platforms

Ultra Series Servers

The Supermicro Ultra series, designed for mission-critical enterprise workloads, benefits from the high-performance and flexible connectivity provided by the AOC-MH25G-M2S2TM SIOM card. These servers are used extensively in virtualization, enterprise databases, and analytics applications.

BigTwin and GrandTwin Systems

High-density twin server architectures like the BigTwin and GrandTwin require efficient, high-bandwidth network options that minimize physical footprint. The AOC-MH25G-M2S2TM meets these needs by providing dual 25GbE and dual 10GbE ports in a single mezzanine card, supporting fast, reliable intra-node communication and external connectivity.

SuperBlade Solutions

SuperBlade enclosures equipped with SIOM slots can leverage the AOC-MH25G-M2S2TM to deliver high-speed networking to each blade server, enhancing distributed applications, VDI infrastructures, and private cloud environments with reduced latency and increased throughput.

Supermicro AOC-MH25G-M2S2TM in Storage and Virtual SAN Applications

NVMe over Fabrics (NVMe-oF)

The 25GbE SFP28 ports are ideal for supporting NVMe over Fabrics protocols, enabling low-latency, high-performance access to shared NVMe storage arrays. This capability allows businesses to build scalable, high-speed storage networks for transaction-heavy applications like online transaction processing (OLTP) databases and virtualized workloads.

vSAN and Hyper-Converged Infrastructure (HCI)

With high aggregate throughput and advanced virtualization features, the AOC-MH25G-M2S2TM is a strong fit for virtual SAN (vSAN) environments and hyper-converged infrastructure deployments. Its ability to handle mixed media connections and heavy east-west traffic simplifies network design and improves operational efficiency.