Hello,
my server has 2 fiber channel connection to my storage , the problem is that in a period time one of them will be dead and i must restart the server to solve the problem .
What storage are you using..?
version of ESXi..?
status of LUN from the SAN at the time of issue..?
Path selection policy and SATP configuration?
I use EMC and the version of esxi is 6.5.
actually i changed the fiber cable and its work properly !