An administrator wants to expand a VMware vSAN cluster in a workload domain by adding...

In VMware Cloud Foundation 9.0,host commissioningis performed exclusively throughSDDC Manager, not from the vSphere Client. When expanding a vSAN cluster inside a workload domain, all ESXi hosts must first be placed in anUnassignedstate and thencommissionedin SDDC Manager before they can appear in the “Add Host” wizard of the vSphere Client. The message in the problem—“No unassigned hosts available with storage type VSAN. Commission hosts with physical NICs 0 & 1 to Add Host from UI”—indicates that SDDC Manager has not yet commissioned any suitable hosts with the required NIC layout.

VCF 9.0 documentation states that for workload domain expansion, hosts must be commissioned under:

SDDC Manager → Workload Domains → (Select WLD) → Hosts → Commission Hosts.

This validates hardware, storage type (such as vSAN ESA or OSA), NIC placement, and ensures the host is compatible with the domain’s configuration.

Options pointing to vSphere Client (A, D) or VCF Operations (B) do not perform the commissioning workflow. Therefore, the correct and verified answer isC, the only interface where host commissioning is officially supported.