Brocade Communications Systems A7990A - StorageWorks SAN Director 4/16 Blade Switch Administrator's Manual page 236

15
Table 15-1
Term
iSCSI session
LUN mapping
Fibre Channel LUN
VT LUN
Fibre Channel virtual
initiator
discovery domain (DD)
discovery domain set
(DDSet)
CHAP authentication
IQN
GbE port
PDU
For additional information about iSCSI target gateway, see the Fabric OS Administrator's Guide.
15-4
iSCSI Gateway Services Terminology (Continued)
Definition
An iSCSI session is the basic communication "pipe" from an iSCSI
initiator to an iSCSI target. A session is a group of TCP/IP connections
that link an initiator with a target (loosely equivalent to a SCSI I-T nexus).
Logical Unit Number mapping. The mapping of the virtual iSCSI target
and the physical Fibre Channel target One frontend LUN (VT LUN) maps
to a backend LUN (Fibre Channel LUN). The frontend LUN numbers can
be different from the backend LUN numbers.
The LUN identifier of the Fibre Channel target.
Virtual target LUN. The LUN identifier of the iSCSI virtual target.
(FC-VI) The iSCSI port looks like an F_Port to the rest of the system.
There is one Fibre Channel virtual initiator per iSCSI. The Fibre Channel
proxy initiator solution is used. FC-VI registers to the Name Server with
its symbolic port name (PWWN) and node name (NWWN). The FC-VI in
the Name Server entry is created irrespective of the host connectivity.
Created between and iSCSI host and iSCSI targets using their IQN for the
purpose of iSCSI device access control.
Created using DDs. Can be configured to enable or disable the
configuration for the purpose of iSCSI device access control.
Authenticates the initiators against a list of user names and passwords with
CHAP (Challenge Handshake Authentication Protocol) authentication in
either one-way or mutual.
An iSCSI Qualified Name that indicates an iSCSI node name in a form
that is of human readable notation using the following syntax:
iqn.yyyy-mm.<reverse of DNS>:<optional iSCSI unique string>
Gigabit Ethernet port. Uses a copper CAT-5e cable for an IP connection to
an RJ-45 copper connector. FC4-16IP has 8 ports of this type that support
1 Gbps speed.
Protocol Data Unit. A unit of data with a header and an optional data
section.
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