Description
Lenovo ThinkSystem QLogic QL41262 PCIe 25Gb 2-Port SFP28 Ethernet Adapter
The Lenovo ThinkSystem QLogic QL41262 PCIe 25Gb 2-Port SFP28 Ethernet Adapter is a purpose-built, high-performance network interface designed for modern data centers. Built on eighth-generation Cavium technology, this dual-port 25GbE adapter delivers ultra-low latency and exceptional throughput for demanding workloads, from virtualization to storage networks. It provides a seamless upgrade path for existing 10Gb networks, enabling you to scale bandwidth with minimal disruption while maintaining reliability and enterprise-grade support. With Universal RDMA capabilities, the QL41262 supports RoCE, RoCE v2, and iWARP, bringing CPU offload and accelerated data movement to your infrastructure so you can accelerate compute, storage, and AI-driven workloads without sacrificing CPU cycles. In Lenovo ThinkSystem deployments, this adapter is optimized for dependable operation in mission-critical environments where performance, efficiency, and uptime matter most.
- Dual-port 25GbE SFP28 connectivity: Two high-speed SFP28 ports deliver scalable, flexible uplinks for data center fabrics, enabling efficient link aggregation and fault tolerance in dense server environments.
- Universal RDMA for ultra-low latency: Support for RoCE, RoCE v2, and iWARP enables direct memory access over the network, dramatically reducing CPU overhead and latency for latency-sensitive apps, storage, and HPC workloads.
- PCIe Gen3 x8 host interface: A robust PCIe connection ensures high throughput to the host, supporting demanding workloads while maintaining compatibility with a wide range of ThinkSystem servers.
- Optimized for virtualization and multi-tenant workloads: Designed to perform in virtualized environments with high I/O contention, delivering predictable performance for VMs, containers, and cloud-scale apps.
- Upgrade path from 10Gb networks: Ideal for customers migrating from older 10Gb networks, offering a straightforward transition to 25GbE with proven Lenovo ThinkSystem reliability and support.
Technical Details of Lenovo ThinkSystem QLogic QL41262 PCIe 25Gb 2-Port SFP28 Ethernet Adapter
- Network interfaces: 2 x SFP28 25GbE ports for flexible, high-bandwidth connectivity in data center networks.
- Host interface: PCIe Gen3 x8, delivering ample bandwidth to support multi-stream traffic and RDMA offloads.
- RDMA support: Universal RDMA with RoCE, RoCE v2, and iWARP, enabling low-latency data transfers and CPU offload for storage and compute workloads.
- Form factor: PCIe Add-in Card designed for Lenovo ThinkSystem servers, with enterprise-grade reliability and long lifecycle support.
- Media and optics compatibility: SFP28 optics and cables compatible with 25GbE networks; media types and transceivers to be selected to fit the network environment.
- Virtualization readiness: Optimized for virtualized deployments, supporting high-density VMs and containerized workloads with efficient I/O handling.
- Environment and compatibility: Validated for Lenovo ThinkSystem ecosystems and capable cross-functionality with compatible PCIe servers that support 25GbE SFP28 adapters.
How to install Lenovo ThinkSystem QLogic QL41262 PCIe 25Gb 2-Port SFP28 Ethernet Adapter
- Power down the server and disconnect it from power. Ground yourself to avoid static discharge and open the chassis according to your maintenance procedures.
- Locate an available PCIe slot that meets the card’s requirements (preferably PCIe Gen3 x8 or higher) and carefully insert the QL41262 into the slot. Secure the bracket with the appropriate screw to ensure a stable fit.
- Attach the dual SFP28 cables or optics to the two ports, ensuring the media is compatible with your network fabric (fibre or copper as appropriate). Route cables neatly to avoid tension on the connectors.
- Power on the server. Install the necessary QLogic/ThinkSystem drivers if required for your operating system. Follow Lenovo’s guidance for driver and firmware updates to ensure optimal performance and RDMA functionality.
- Verify hardware recognition in the OS (for example, by using system information commands or device managers). Configure RDMA settings (RoCE, RoCE v2, iWARP) if your workload or switch fabric requires it, and perform a basic connectivity test to confirm link status and throughput.
- Optionally enable and configure media-specific features, QoS, and virtualization-related settings as part of your data center strategy. Validate performance with a throughput benchmark and confirm stable operation under your typical workloads.
Frequently asked questions
- What is the Lenovo ThinkSystem QLogic QL41262? It is a high-performance, dual-port 25GbE PCIe network adapter based on QLogic technology, designed for Lenovo ThinkSystem servers with support for advanced RDMA features.
- What kind of ports does it have? It features two SFP28 25GbE ports, enabling flexible uplinks and efficient 25Gb networking within data centers.
- Which RDMA options are supported? Universal RDMA with RoCE, RoCE v2, and iWARP, providing low-latency, CPU-offloaded networking for demanding workloads.
- Is this adapter suitable for upgrading from 10Gb networks? Yes. It offers a straightforward upgrade path from existing 10Gb environments, helping you scale bandwidth with minimal disruption while maintaining enterprise-grade reliability.
- What systems is it certified for? It is designed for Lenovo ThinkSystem servers, with validation and support aligned to Lenovo enterprise ecosystems and data center deployments.
- What operating systems are supported? The adapter is compatible with standard enterprise operating environments used in data centers; drivers and firmware updates are available through Lenovo/QLogic channels as part of your deployment.
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