The networking component was entirely foreign to me when we started this adventure. I had some experience with basic switch configuration and running ethernet, but I didn't even know what SFP+ cabling (aka twinax) was, or what kind of switches we needed, or if the nic's we had on the dell servers would work with the switches we were buying from cisco. I don't know what the industry standards are like elsewhere, but for the most part the rest of our organization used either cat5 or fibre. Nobody really had any experience with twinax, but after talking with a number of sales reps and some extensive googling, we found the right network hardware.
VMWare recommends 10GB connection for VSAN, although it can be run over 1GB, 10GB is recommended for production.
We settled on Cisco Nexus 3500 series for our switches. For redundancy, we would have 2 switches for each VSAN deployment.
Here is a link to the switch details. Nexus 3500
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