Yes , in case customer is buying 2 appliances and adding both the appliance in the same cluster ,case customer will be having 8 hosts in the cluster . For FTT = 2 , VSAN needs at least 5 Host in the cluster, so it can be implemented .
If a customer buys two VxRail appliances (8 total nodes), does VxRail support the FTT=2 setting in VSAN?
Does VxRail support FTT=2 with 2 appliances?