Thinking about setting up EVO:RAIL and wondering how many EVO:RAIL hosts you need? The minimum number of EVO:RAIL hosts is either 1 or 4, depending on how you look at it…
You require a minimum of 4 ESXi hosts for EVO:RAIL to be able to use it’s storage because that’s what vSAN requires. However, EVO:RAIL comes with 4 ESXi hosts built in, so the minimum number of EVO:RAILs you need is 1 EVO:RAIL appliance!