Direct servers connection with ConnectX-4 25Gbe

Hello everyone,

I am planning to install two ConnectX-4 Lx EN network interface card, 25GbE dual-port SFP28, PCIe3.0 x8, tall bracket, ROHS R6 (MCX4121A-ACAT) in two Dell PowerEdge R540 servers. I want to the servers to work as a cluster with Hyper-V virtual machines and to replicate data from servers storage between them. Can anyone confirm whether the direct back-to-back connection between both servers without any switch inbetween using these Mellanox cards and two SFP28 cables will be possible and supported?

Thanks in advance!


There’s no problem to connect servers Back to Back with connectx-4 Lx EN or any other mellanox cards.