The Mellanox 100GbE Dual Port QSFP28 network card MCX516A CCAT is a high performance network interface card (NIC) designed for use in servers and high speed networking applications. Here's an overview of its key features:

1. Introduction:

The Mellanox MCX516A CCAT is part of the ConnectX 5 series, which is known for its advanced features and high performance. It is designed to support data center applications, high performance computing (HPC), and cloud environments where high throughput and low latency are critical.

2. Speed:

The card provides 100 Gigabit Ethernet (100GbE) connectivity, which translates to a data transfer rate of 100 billion bits per second. This high speed is achieved through the use of two 50Gb/s lanes, effectively doubling the bandwidth compared to single port 100GbE solutions.

3. Interface Type:

The card uses the Quad Small Form factor Pluggable Double Density (QSFP28) interface, which is a compact, hot pluggable optical transceiver. QSFP28 supports various cable types, including direct attach copper cables (DAC), active optical cables (AOC), and single mode or multi mode fiber optic cables.

4. Hardware Interface:

The MCX516A CCAT supports a range of physical layer interfaces, including 100GbE over 4x25Gb/s electrical interfaces and 100GbE over 2x50Gb/s optical interfaces. This flexibility allows the card to be used in a variety of network configurations.

5. Chip Type System:

The card is based on Mellanox's BlueField 2 SoC (System on Chip), which integrates a high performance network interface with an Arm based processor. This allows for advanced offloading capabilities, such as RDMA (Remote Direct Memory Access), NVMe over Fabrics, and in network computing, which can significantly reduce the CPU load and improve overall system performance.

6. Additional Features:

  RDMA Support: The card supports RDMA over Converged Ethernet (RoCE) and InfiniBand, which enables low latency, high throughput communication between servers.

  Virtualization: It supports advanced virtualization features, such as SR IOV (Single Root I/O Virtualization) and VMDq (Virtual Machine Device Queues), which allow for efficient sharing of the NIC across multiple virtual machines.

  Energy Efficiency: The ConnectX 5 series is designed with energy efficiency in mind, offering features like power management and low power modes to reduce power consumption.

  Security: The card includes hardware based security features, such as secure key storage and encryption offloading, to protect data in transit.

The Mellanox MCX516A CCAT is a versatile and powerful network card that can significantly enhance the performance and capabilities of servers and networking equipment in demanding environments.

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