qnap has expanded his family 100 GbE network expansion cards with the model QXG-100G2SF-CX6. Incorporates the NVIDIA Mellanox ConnectX-6 Dx driver, It has two QSFP28 ports and uses the PCI4 4.0 interface, apart from offering a bandwidth of up to 200 Gbps. Thanks to this, it allows to eliminate the bottlenecks that hinder the performance of the networks. On the other hand, this expansion card is compatible with Qnap NAS operating systems, and also with Windows 8 and 10, Windows Server and Linux (Ubuntu 18.04/20.04).
It supports load shedding function including RDMA, RoCE v1/v2 and SR-10V (1K VP and 8PF). That’s why it’s designed for data centers and virtualization applications that are affected by latency and need it to be as low as possible. They also do their best in I/O-intensive situations, serving as a support solution for all-flash storage.
The Qnap QXG-100G2SF-CX6 is compatible with SR-IOV, which is responsible for allocating bandwidth resources that a physical network card has to virtual cards. It also ensures that virtual machine applications are reliable, and lowers the consumption costs of a CPU. On the other hand, it supports RoCE, which makes it possible to access a network in RAM directly. In this way, it manages to reduce latency and improve the performance and efficiency of a VMware virtualization environment.
This controller also supports iSER, a combination of iSCSI and RDMA (Remote direct memory access). Thanks to this, it is able to directly access server and storage memory buffers, bypassing general network drivers and the connections layer. That’s it FEC-compliant, which allows you to avoid packet loss, which is common in large and fast networks. Thanks to FEC the receiver is capable of recovering lost data to correct bit misses. In this way, it guarantees reliable data transmission, even if the channels through which communication is established are noisy.
We can find more information on the official Qnap website.