For block-based storage, the different logical disks are provided to the ESXi storage subsystem with a unique logical unit number (LUN) identifier.
The same LUN cannot be presented to an ESXi host through different storage protocols, such as iSCSI and Fibre Channel.
If you are adding new LUNs (or modifying the LUNs geometry), then you might need to rescan your storage to see the changes at the ESXi level. There are two different types of storage rescan: automatic and manual.
Automatic rescan is performed directly by the vCenter Server on all the hosts in the same cluster. This feature can be turned off with a specific vCenter advanced option: Config.vpxd.filter.hostRescanFilter.
By default, when you perform ...
