Brocade iSCSI Gateway Service Administrator's Guide - Supporting Fabric OS v5.3.0 (53-1000440-01, June 2007)

iSCSI Gateway Service Administrator’s Guide v
Publication Number: 53-1000440-01
discovery domain
(DD) A group of iSCSI virtual targets and iSCSI initiators. Discovery domains
are used for access control and authentication. Only the iSCSI initiators in the
same discovery domain as the iSCSI virtual targets can connect to the FC
targets. When there are no discovery domains, all iSCSI initiators can access
all iSCSI virtual targets (and therefore all FC targets) on the gateway.
discovery domain set
(DDSet) A group of discovery domains that can be enabled or disabled. The
set is used to configure access control and authentication models.
FC portal
An FC_Port that connects the iSCSI virtual initiator to the SAN.
iSCSI virtual initiator
(iSCSI VI) Proxies iSCSI initiator connections to iSCSI virtual target with the
physical FC targets on the SAN. Each iSCSI-enable port has one iSCSI virtual
initiator. An iSCSI virtual initiator is similar to an F_Port in the fabric. The iSCSI
VI registers with the Name Server using a symbolic port name (PWWN) and
node name (NWWN).
IQN
(iSCSI Qualified Name) An iSCSI address that uniquely identifies an iSCSI
device on the network. It is the equivalent of a Fibre Channel WWN and is in
human readable form. The iSCSI gateway supports only IQNs and does not
support IEEE, EUI, and IEEE NAA names.
iSCSI initiator
In client/server terminology, a client that connects to a service (iSCSI virtual
target) offered by the server (iSCSI gateway). It is identified by an IQN. The
iSCSI initiator proxies communications between applications and data
located on a remote SCSI devices to allow applications to access data from a
remote SCSI device, such as an FC target across a TCP/IP network.
iSCSI portal
An iSCSI-enabled FC4-16IP GbE port that is assigned an IP address and
connected to the (IP) network. This port receives the iSCSI initiator
connection to the iSCSI virtual target. The port is bound to an iSCSI virtual
initiator that connects to the FC target in the SAN.
iSCSI portal group
A set of iSCSI-enabled ports. The portal group allows the iSCSI initiator to
access iSCSI virtual targets using any available port. An iSCSI session may
have several connections to an iSCSI VT on any port in the group. Each
FC4-16IP blade has eight GbE ports. The portal group name is the slot
number of the blade. All online iSCSI-enabled GbE ports participate in the
portal group.
iSCSI virtual target
(iSCSI VT) An iSCSI representation of LUNs from one or more FC targets. The
physical FC LUN is mapped to the iSCSI virtual targets. It is identified by an
IQN. The iSCSI gateway proxies the iSCSI initiators connection to the physical
FC targets using iSCSI virtual targets.
iSCSI connection
A single link between an iSCSI initiator and iSCSI target over a TCP/IP network
that carries control messages, SCSI commands, parameters, and data.