We have just bought a new Mellanox SX1012 Ethernet switch. The idea was to interconnect a multicore server with a dual 10Gb Ethernet card (with RJ45 plugs) to a NAS also having a pair of 10 Gb (RJ45) Ethernet connectors. We have also another NAS which we will connect in the future. So far we have also got a Mellanox passive cooper hybrid cable ETH, 40GbE to 4x10GbE QSFP to 4xSFP+. The problem is that the SFP+ cables can be connected neither to the RJ45 connectors of the server nor to the RJ45 connectors of the NAS. Thus, we are wondering:
Are there any cables that directly split from QSFP to 4xRJ45?.
If not, with the current equipment, are there any kind of “adapters” from SFP+ to RJ45?
Do we need to buy a second switch with 1 or 2 SFP+ connectors to convert the SFP+ to RJ45?
3.1) If this is the case, do you have any hint for what could be the best option to not reduce the bandwidth of interconenction between the NAS and the server?