In the section "Configuring disk sharing by using LUN", in Prerequisites, it says:    

* The storage provider must support a Container Storage Interface (CSI) driver that uses the *SCSI protocol*.


Although *SCSI protocol* is probably technically correct, it may not be the most common way of referring to SAN based storage for anyone but storage administrators. I'd suggest a change to something like:  

* The storage provider must support a Container Storage Interface (CSI) driver that uses *FC, FCoE or iSCSI storage protocols*.

This would rule out block storage options such as RBD, which is the intent of this prerequisite.