I want to configure Multipathing with fibre channel SAN : i have 2 switchs FC,3 ESXi 6 and storage Array.
my problem is : One of the two paths is not detected even if everything is properly connected and configured (Esxi, Switch, and Storage Array)
I have a very similar setup to you as it happens.
I created a fully open zone on my FC switches. By that I mean that all host ports could see all SAN ports, or to put it another way, everything could see everything. This resolved my issue for me anyway.
Try that and report back on here