Networking Design Question Server with multiple NIC

Hi all,

I 'm planning to update my network but I ran into a brain.exe error (ok it's too late right now and I'm too unexperienced in that regard).

Perhaps you guys can help me to reboot and get me back on track:

Hardware I have:

1 Unraid NAS With 2 Port Mellanox x3 Card 40G (1 Port has a 40G QSFP+ to 10G SFP+ Converter with a 10G SFP+ SR Module [WORKING]) currently there is 1 on-board 1G NIC used as connection

1 Unraid BACKUP NAS  1 Port Meallanox x3 Card 40G

1 PC 2,5G On-board NIC

1 40G DAC Cable

1 OM4 cable LC2LC

1 Switch (2 x 10G SFP+ and 4x 2,5G RJ45) 1 SFP+ Port has a  10G SFP+ SR Module [WORKING]. 1 RJ45 is connected over 1G to

1 Internet router

How do I setup up this in a way (hardware connecting and software setting) that NAS and BACKUP can go the full 40G ( the obvious thought was a dedicated connectionover DAC cable but with which network settings ?)

AND

The PC being able to connect to the NAS with 2,5G (update to 10G planned to connect to the second SFP+ Port on the switch) 

AND the PC being able to configure and connect to the NAS and BackupNAS

Is this even possible?

I first thought about a configuration as show in the image attached but in that case - in my understanding - I would not be able to connect to the backup server

Gateway & DNS in the 192.168.1.x network would be configured as 192.168.1.1

Edited November 23, 20232 yr by HardwareHarry
typo and clarification + Picture