What is the minimum number of VxRail nodes required for a vSAN storage policy with RAID-5 (Erasure Coding)?

Which port configuration is invalid on the integrated NIC of a VxRail node?

An implementation engineer is expanding an existing VxRail S Series cluster with an additional node. The version of the node is not at the current cluster level but is compatible.
What procedure would result in the quickest node addition?

A Secure Remote Services deployment on a VxRail system with external vCenter fails with Invalid target datastore specified.
What action is required to resolve this problem?

An implementation engineer is deploying a new VxRail cluster What should they confirm before installing the hardware?