**ISCSI** is a transport layer protocol that describes how Small Computer System Interface packets should be transported over a [[TCP/IP]] network. ISCSI, which stands for Internet Small Computer System Interface, works on top of the Transport Control Protocol (TCP) and allows the SCSI command to be sent end-to-end over local-area networks (LANs), wide-area networks (WANs) or the internet. Client/Server = Initiator/Target