I want to build a direct 40G file share with a pair of 40G Ethernet network cards. How would I do that without a 40G switch?
Would Smb multichannel work if i used a pair of DAC cables to get 80G?
I just need to know how I can connect a pair of PCs together via a DAC or Fiber connection using the below NIC model for file sharing.
NIC models: Mellanox ConnectX-3 Pro 40G Qsfp.
Yes, it’s possible to
- Connect two of your NICs with DAC or similar cables
- Create a LAG connection that logically combines the two physical connections into one
Sounds like you want to do that in Windows. I can’t help you with that.
These cards are 8x PCIe Gen3 cards. That has a total (theoretical) bandwidth of 64GT/s. That’s less bandwidth than the two ports of that card can theoretically transmit combined.
Make sure to stick your card into a PCIe port on your mobo that actually has 8 lanes.
You will find that a PCIe port with lanes connected to the CPU is waayyy faster than one that connects to the chipset.
40MT/s is a helluvalot bandwidth. Try this out first. Don’t be surprised if you find that you cannot saturate that connection.
Bonus: MLX ConnectX-3 Pro actually can do 56MT/s on a single connection when using a Mellanox certified connection (DAC or AOC or similar). They are not (much) more expensive than 40GT DACs on eBay.
This topic was automatically closed 273 days after the last reply. New replies are no longer allowed.