I noticed something over the weekend, and I want to make sure customers do not run in to this problem. If you have more than 8 hosts in your vSAN Cluster and enable vSAN File Services than the H5 client will ask your for more than 8 IP addresses. These IP addresses are used by the protocol stack containers. However, as described in this post, vSAN File Services will only ever instantiated 8 protocol stack containers in the current release. So do not provide more than 8 IPs, I tried it, and I also ran in to the scenario where vSAN File Services was not configured completely and properly as a result. You can simply click the “x” as pointed out in the screenshot below to remove the IP address entry line(s) to work around this issue. Hopefully it will be fixed soon in the UI.