Direct NFS Access transport mode works by directly accessing the VM data stored on the NFS storage, thus the SCSI hot-add capability of ESXi hosts is not used, and VM data is not necessarily transferred over the LAN. Firstly, Direct NFS mode can indeed be used for restores as the data is directly accessed from the NFS storage, making 'Direct NFS mode can be used for restores' correct. Secondly, it is designed to work as an alternate transport mode if other primary modes are unavailable, making 'You can select to failover to this mode, if primary transport modes fail or are unavailable' correct.