QNAP QXG-100G2SF-BCM – 100GbE Network Card
Overview
The QNAP QXG-100G2SF-BCM is an enterprise-class dual-port 100GbE network expansion card powered by the Broadcom BCM57508 controller. Utilizing a PCIe Gen 4 x16 interface, this card is engineered to meet the extreme bandwidth requirements of all-flash storage arrays and large-scale data center environments. Infrastructure engineers deploy this card to facilitate high-speed data migration, 4K/8K video production workflows, and intensive virtualization clusters.
Technical capability is anchored in its support for advanced RDMA (Remote Direct Memory Access) protocols, including RoCE v2 and iWARP. These features allow for direct data transfer between memory and the network, significantly reducing CPU overhead and system latency. The card also supports SmartNIC features like hardware-based flow processing and SR-IOV, which are essential for maintaining high throughput in multi-tenant cloud environments.
Deployment is optimized for QNAP’s flagship rackmount NAS units and standard enterprise servers. The dual QSFP28 ports provide flexibility for high-speed switch connectivity or direct-attach cabling. It includes pre-installed low-profile brackets and comes with full-height alternatives to ensure compatibility with various chassis heights. This card is strictly intended for high-performance use cases; installing it in a PCIe Gen 3 slot will result in reduced maximum throughput.
Key Features
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Dual 100GbE QSFP28 ports provide 200Gbps total bandwidth capacity
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Broadcom BCM57508 controller supports advanced RoCE v2 and iWARP
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PCIe Gen 4 x16 interface enables full-speed data transfer efficiency
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Hardware offloading reduces CPU load for virtualization and backups
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SR-IOV support optimizes networking for high-density virtual machines
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