13Iscsi Gateway Services; Overview Of Iscsi Gateway Service; Iscsi Session Translation; Iscsi Gateway Network - HP A7533A - Brocade 4Gb SAN Switch Base Administrator's Manual
Hp storageworks fabric os 6.1.1 administrator guide (5697-0235, december 2009)
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Also See for A7533A - Brocade 4Gb SAN Switch Base:
- Administrator's manual (576 pages) ,
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13
iSCSI Gateway services
Overview of iSCSI gateway service
The FC4- 1 6IP iSCSI gateway service is an intermediate device in the network, allowing iSCSI initiators in
an IP SAN to access and utilize storage in a Fibre Channel (FC) SAN as shown in
iS C S I
initiator
Figure 17
iSCSI gateway network
It provides the following services to the iSCSI initiators:
•
Access to the fabric using virtual FC devices (iSCSI virtual initiator)
•
Supports target registration to an iSCSI Name Server (iSNS) for discovery
Manages iSCSI initiator access control using discovery domains and a discovery domain set
•
•
Session management, such as session tracking and performance monitoring
•
Session authentication using CHAP
NOTE:
The FC4- 1 6IP iSCSI gateway service is not compatible with other iSCSI gateway platforms,
including iSCSI Gateway or the MP Router.
iSCSI session translation
The iSCSI gateway enables applications on an IP network to use an iSCSI initiator to connect to FC targets.
The iSCSI gateway translates iSCSI protocol to Fibre Channel Protocol (FCP), bridging the IP network and
FC SAN.
Figure 18
iS C S I
initiator
IP
network
Figure 18
iSCSI gateway service basic implementation
The FC4- 1 6IP blade acts as an iSCSI gateway between FC-attached targets and iSCSI initiators. On the
iSCSI initiator, iSCSI is mapped between the SCSI driver and the TCP/IP stack. At the iSCSI gateway port,
the incoming iSCSI data is converted to FCP (SCSI on FC) by the iSCSI virtual initiator, and then forwarded
to the FC target. This allows low-cost servers to leverage an existing FC infrastructure.
F C 4-16IP
iS C S I gateway
IP
network
shows a basic implementation.
F C 4-16IP iS C S I gateway
IP
portal
iS C S I virtual
target (V T )
IP
F C target 1
L UNs
S A N
L UNs
F C target 2
iS C S I virtual
initiator (V I)
F C
Fabric OS 6.1.x administrator guide 253
Figure
17.
F C
target 1
L UNs
S A N
L UNs
F C
target 2
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