The iSCSI logical unit (LUN) resource enables you to create and manage iSCSI logical units. iSCSI is an IP storage networking standard that links storage systems. By forwarding iSCSI commands over the network, iSCSI enables data transfer both over local area and wide area networks.
An iSCSI logical unit, or LUN, is a logical representation of a physical device on the iSCSI target, identified by the LUN number. An iSCSI initiator establishes a connection with the LUN through a series of sessions with the target.