QNAP QXG-25G2SF-BCM Dual-Port 25GbE SFP28 PCIe Network Card

Give High-Performance Storage a Wider Network Path The QXG-25G2SF-BCM adds two 25GbE SFP28 ports to a supported NAS or workstation. It is designed for storage and virtualisation environments where ordinary network links can restrict capable SSD arrays and busy shared services. A PCIe 4.0 x8 connection, network offloads and bracket options provide a flexible platform for a carefully engineered upgrade. Compatible transceivers or direct-attach cables are selected separately. Highlights Dual 25GbE Connections Two SFP28 ports support 25Gbps and compatible 10Gbps links. Up to 50Gbps combined port bandwidth with an appropriate configuration. Designed for Demanding Hosts Broadcom BCM57502 controller with PCIe 4.0 x8 interface. Low-profile card with full-height and specialised bracket options. Advanced Network Functions RoCE and SR-IOV support for compatible deployments. Specific NAS, operating-system, driver and application requirements apply. Key Features Connect Fast Storage to Fast Clients Two 25GbE ports provide room for demanding shared storage, virtualisation and backup traffic. They can also operate with compatible 10GbE connections. Select matching switches, client adapters and SFP28 or supported SFP+ connection components. The card does not turn a slower disk array into an all-flash system or guarantee the same performance for every client. Use Both Ports Deliberately Supported SMB Multichannel or port-trunking configurations can make use of the two network paths for suitable workloads. The 50Gbps figure is the combined port bandwidth, not the speed of one physical port or a universal single-transfer result. Host resources, network design, client support and the selected protocol determine how the available bandwidth is used. Offload Suitable Virtualisation Traffic SR-IOV can expose supported virtual functions to virtual machines, while RoCE supports direct memory access over compatible Ethernet infrastructure. These facilities can reduce overhead or latency in suitable environments, but require supported NAS or computer platforms, software and network configuration. They are capabilities to design around, not settings that automatically improve every workload. Match the PCIe Slot and Installation Space The card uses PCIe 4.0 x8 and has a 186 mm board length. A low-profile bracket is pre-installed, with full-height and specialised brackets supplied. Check the exact NAS compatibility list and the electrical lanes, clearance, cooling and other installed cards before ordering. Sharing slot resources or installing in a constrained host can affect the result. Complete the Network Connection Separately The package contains the card, installation guide and three brackets in total. It does not include the network transceivers or cables. Use appropriate compatible SFP28 direct-attach cables or optical transceivers and fibre for the intended distance. Match both ends of the link rather than selecting only by the connector's appearance. Summary QXG-25G2SF-BCM suits supported systems that need dual high-bandwidth Ethernet connections and a clear expansion path for advanced networking. Plan the slot, drivers, connection components and application support together to make the most of the card's capabilities. Are Both Ports 25GbE?ExpandCollapse Yes. There are two SFP28 ports supporting 25Gbps and compatible 10Gbps operation. Each physical port is rated separately; 50Gbps is the combined bandwidth of both ports. Are Transceivers or Cables Included?ExpandCollapse No. Select compatible direct-attach cables or suitable optical transceivers and fibre separately, with matching components at the other end of each link. What PCIe Slot Does It Need?ExpandCollapse The card uses PCIe 4.0 x8. Confirm the exact host's supported card list, available electrical lanes, 186 mm board clearance, bracket and cooling. Which Operating Systems Are Supported?ExpandCollapse QNAP specifies QTS 5.2.4 or QuTS hero h5.2.4 or later on supported NAS models, Windows 11 24H2, Windows Server 2022/2025 and Ubuntu 20.04 LTS. Appropriate computer drivers are required. Do SR-IOV and RoCE Work on Every NAS?ExpandCollapse No. These functions require compatible hardware, supported software and the appropriate configuration. Check the exact platform and workload before relying on them. Will One File Transfer Reach 50Gbps?ExpandCollapse Not automatically. Both ports can contribute to supported multichannel or aggregated workloads, but a single link remains 25Gbps. Clients, applications, storage and the network must support the chosen arrangement. 続きを読む