Description
Overview of the Lenovo SN30L21989 Mellanox Ethernet Adapter
The Lenovo SN30L21989 Mellanox Connectx-3 Mezz 40gb 2-port Ethernet Adapter is an advanced network interface card (NIC) designed for ThinkSystem servers. It is a high-performance adapter that delivers exceptional throughput and low latency for demanding applications such as cloud computing, data analytics, and high-frequency trading.
In this article, we will delve into the features and benefits of the Lenovo SN30L21989 Mellanox Connectx-3 Mezz 40gb 2-port Ethernet Adapter, including its specifications, compatibility, and use cases.
Specifications
- The Lenovo SN30L21989 Mellanox Connectx-3 Mezz 40gb 2-port Ethernet Adapter is a dual-port NIC that supports 40 Gbps Ethernet. It is designed to fit into the mezzanine slot of ThinkSystem servers, providing a low-profile, high-bandwidth networking solution.
- The adapter is based on Mellanox ConnectX-3 technology, which provides advanced features such as RDMA (Remote Direct Memory Access), which allows data to be transferred directly between the adapter’s memory and the server’s memory, bypassing the CPU and reducing latency.
- The Lenovo SN30L21989 Mellanox Connectx-3 Mezz 40gb 2-port Ethernet Adapter also supports RoCE (RDMA over Converged Ethernet), which allows RDMA to be used over Ethernet networks. This enables applications to take advantage of the low latency and high bandwidth of RDMA without requiring specialized InfiniBand hardware.
Compatibility
The Lenovo SN30L21989 Mellanox Connectx-3 Mezz 40gb 2-port Ethernet Adapter is compatible with ThinkSystem servers that have a mezzanine slot, including the following models:
- ThinkSystem SD650
- ThinkSystem SN550
- ThinkSystem SN850
- ThinkSystem ST550
- ThinkSystem ST650
- ThinkSystem ST850
The adapter requires a minimum of 8 GB of RAM and a 64-bit operating system. It is compatible with major operating systems, including Windows, Linux, and VMware ESXi.
Benefits
The Lenovo SN30L21989 Mellanox Connectx-3 Mezz 40gb 2-port Ethernet Adapter provides several benefits for high-performance computing and networking applications.
- High throughput and low latency
The adapter delivers up to 40 Gbps of Ethernet bandwidth and supports RDMA, which reduces latency by bypassing the CPU and enabling direct memory-to-memory transfers. This makes the adapter ideal for demanding applications such as data analytics and cloud computing.
- Advanced networking features
The adapter supports advanced networking features such as RoCE, which allows RDMA to be used over Ethernet networks. This enables applications to take advantage of the low latency and high bandwidth of RDMA without requiring specialized InfiniBand hardware.
- Easy integration with ThinkSystem servers
The adapter is designed to fit into the mezzanine slot of ThinkSystem servers, providing a low-profile, high-bandwidth networking solution that is easy to install and configure.
- Increased scalability and flexibility
The adapter’s high throughput and low latency enable it to handle large amounts of data and support multiple virtual machines and workloads. This increases scalability and flexibility, allowing organizations to adapt to changing business needs and demands.
General Information about the Lenovo SN30L21989
- Manufacturer: Lenovo
- Model Number or SKU# SN30L21989
- Product Type: Ethernet Adapter
Product Specifications
- Device Type: Network Adapter
- Form Factor: Plug-in Card
- Interface (bus) Type: Mezzanine Lan-on-motherboard Generation 2 (ml2)
- Ports: 40gb Ethernet X 2
- Dimensions (wxdxh): 3.9 In X 3.1 In
- Weight: 0.46 Oz
- Data Link Protocol: 10 Gige, 40 Gigabit Lan
- Data Transfer Rate: 40 Gbps





