When presenting external storage to VMware Cloud Foundation vSphere hosts, remember that VMFS datastores on FC can be principal or supplemental, while iSCSI and NVMe/FC are considered only supplemental storage for a workload domain. On creation, principal storage is required for initial workload domain deployment. Afterwards, the supplemental datastores can be presented to the workload hosts.
In addition, while principal storage can be monitored from within the SDDC Manager interface, all supplemental datastores must be managed independently through the workload domain VMware vCenter instance.
Note: Datastores from external arrays must only be presented to workload domains. vSAN is the only storage supported for use by the management domain hosts.
Caution: When upgrading VMware ESXi hosts within the VMware Cloud Foundation workload cluster, hosts requiring custom FC vSphere Installation Bundles (VIBs) might be overwritten, potentially causing an outage.
