QNAP Dual Port 25 GbE network expansion card, PCIe 4.0, Low-profile bracket included, for use with QNAP NAS only

QNAP Dual Port 25 GbE network expansion card, PCIe 4.0, Low-profile bracket included, for use with QNAP NAS only

QXG-25G2SF-CX6

Supports SR-IOV and RoCE for Improved Network and VMware® Virtualization Environments

The QXG-25G2SF-CX6 features an NVIDIA Mellanox® ConnectX®-6 Lx SmartNIC controller, supports PCIe Gen4 (backwards compatible with Gen3/ Gen2) and provides up to 25 Gbps transfer speeds (supports 10/25Gbps). By using Port Trunking to combine multiple ports, up to 50GbE can be achieved for accelerating file sharing and intensive data transfer. With SR-IOV support, the QXG-25G2SF-CX6 greatly boosts network efficiency and is ideal for I/O-intensive and latency-sensitive virtualization applications and data centers.

High-speed 25GbE Networking

The TS-h3088XU-RP supports 25GbE networking, and can be used with the QXG-25G2SF-CX6 to expand network connectivity. It can also be used with a 25GbE Switch to build a budget-friendly high-speed network environment.

Strengthen Your virtualization Environment with SR-IOV and RoCE

The QXG-25G2SF-CX6 supports SR-IOV, which can allocate bandwidth resources from a physical network card directly to VMs. It ensures reliable VM applications and reduced CPU overheads. The QXG-25G2SF-CX6 also supports RoCE, which can access a network directly in RAM to effectively reduce latency and enhance performance and efficiency for VMware® virtualization environments.

Note

1. SR-IOV is supported by specific QNAP NAS models and should work with SR-IOV compatible adapters. Click here to check supported NAS models.
2. Both the NAS that installs the QXG-25G2SF-CX6 and the receiving-end devices must support RoCE. If the receiving devices do not support RoCE, it will use TCP/IP.

Ensure reliable data transfer with Forward Error Correction (FEC)

The QXG-25G2SF-CX6 supports FEC to overcome packet loss - a potentially common occurrence in fast, long-distance networks. FEC helps the receiving side detect and recover lost data to correct bit errors, thus ensuring reliable data transmission over "noisy" communication channels. With three FEC modes, you can use a suitable cable and switch to build an optimal network environment.

Supports Windows and Linux servers/workstations

Besides QNAP devices, the QXG-25G2SF-CX6 supports many platforms, including Windows® 10, Windows Server®, and Linux® (driver required) which allows you to attain optimal business performance for a wider range of system applications and services. The higher bandwidth density with reduced links helps reduce cabling footprint and operational costs.

Dimensions (L x W x H) 

117.33 mm length × 1-slot width × Low-profile (The dimension is based on PCBA size × not including the bracket) mm

Cable 

CAB-DAC30M-SFP28,CAB-DAC15M-SFP28,TRX-25GSFP28-SR

Controller 

NVIDIA Mellanox ConnectX-6 Lx

Number of Ports 

2 x SFP28

Connector 

SFP28

PCIe and Lanes 

PCIe Gen4 x8

SR-IOV Support 

Y

RDMA over Converged Ethernet (RoCE), Zero Touch RoCE (ZTR) Support 

Y

VLAN insertion/stripping Support 

Y

iSER Support 

Y

NVGRE, VXLAN, Geneve Support

Y

How many virtual functions 

512

How many physical functions per host 

8

Supported NAS operating systems 

QTS/QuTS hero (recommend an upgrade to the latest version); Windows (Driver required); Linux (Driver required)

Supported QNAP NAS 

Models with PCIe slot(s) (1 free slot required)

Support Ubuntu Commercial Linux Distribution 

Ubuntu 18.04/20.04

Support Windows 

Windows 8/10

Support Windows Server 

Windows Server 2016/2019

Port and Cable 

SFP28 DAC cable (3M) or SFP28 OPTIC transceiver

Package Contents 

1 x Network card; 1 x QIG; 3 x Brackets

Standard Warranty 

3 years

Transmission Rates 

25Gbps/10Gbps

IEEE Standards 

IEEE 802.3ae 10 Gigabit Ethernet
25/50 Ethernet Consortium 25G and 50G supporting all FEC modes
IEEE 802.3by 25G supporting all FEC modes
IEEE 802.3ad, 802.1AX Link Aggregation
IEEE 802.3az Energy Efficient Ethernet (supports only "Fast-Wake" mode)
IEEE 802.3ap based auto-negotiation and KR startup
IEEE 802.1Q, 802.1P VLAN tags and priority
IEEE 802.1Qaz (ETS)

Bracket 

Low-profile bracket pre-installed; full-height and specialized (for selected QNAP NAS) brackets are bundled