What is SCSI-iSCSI IT Nexus

Here is a listing of technical definitions for SCSI-iSCSI IT Nexus.

I_T nexus: According to SCSI Architecture Manual, the I_T nexus is a relationship between a SCSI Initiator Port and a SCSI Target Port. For iSCSI, this relationship is a session, defined as a relationship between an iSCSI Initiator’s end of the session (SCSI Initiator Port) and the iSCSI Target’s Portal Group. The I_T nexus can be identified by the conjunction of the SCSI port names; that is, the I_T nexus identifier is the tuple (iSCSI Initiator Name + ’,i,’+ ISID, iSCSI Target Name + ’,t,’+ Portal Group Tag).

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