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Chapter 24
Configuring IP Storage
Click the iSCSI Setup Wizard icon.
Step 1
Choose an existing iSCSI initiator or add the iSCSI node name or IP address for a new iSCSI initiator.
Step 2
Choose the switch for this iSCSI initiator if you are adding a new iSCSI initiator and click Next.
Step 3
Step 4
Choose the VSAN and targets to associate with this iSCSI initiator and click Next.
Step 5
Set the zone name for this new iSCSI zone and optionally check the Read Only check box.
Click Finish to create this iSCSI initiator, or click Cancel to close the wizard without creating the iSCSI
Step 6
initiator.
Routing iSCSI Requests and Responses
The iSCSI feature consists of routing iSCSI requests and responses between hosts in an IP network and
Fibre Channel storage devices in the Fibre Channel SAN that are accessible from any Fibre Channel
interface of the Cisco MDS 9000 Family switch.
Each iSCSI host that requires access to storage via the IPS module needs to have a compatible iSCSI
driver installed. (The CCO website at provides a list of compatible drivers). Using iSCSI protocol, the
iSCSI driver allows an iSCSI host to transport SCSI requests and responses over an IP network. From
the host operating system perspective, the iSCSI driver appears to be a SCSI transport driver similar to
a Fibre Channel driver for a peripheral channel in the host. From the storage device perspective, each IP
host appears as a Fibre Channel host.
Routing SCSI from the IP host to the Fibre Channel storage device consists of the following main
actions.
•
•
•
FCP (the Fibre Channel equivalent of iSCSI) carries SCSI commands over a Fibre Channel SAN.
Presenting Fibre Channel Targets as iSCSI Targets
The IPS module presents physical Fibre Channel targets as iSCSI targets allowing them to be accessed
by iSCSI hosts. It does this in one of two ways:
•
•
The IPS module does not import Fibre Channel targets to iSCSI by default. Either dynamic or static
mapping must be configured before the IPS module makes Fibre Channel targets available to iSCSI
initiators. When both are configured, statically mapped Fibre Channel targets have a configured name.
Targets that are not statically imported are advertised with the name created by the conventions explained
in this section.
OL-7753-01
Transporting iSCSI requests and responses over an IP network between hosts and the IPS module.
Routing SCSI requests and responses between hosts on an IP network and the Fibre Channel storage
device (converting iSCSI to FCP and vice versa). This routing is performed by the IPS module.
Transporting FCP requests or responses between the IPS module and Fibre Channel storage devices.
—Used if all logical units (LUs) in all Fibre Channel storage targets are made available to iSCSI
hosts (subject to VSAN and zoning).
—Used if iSCSI hosts are restricted to subsets of LUs in the Fibre Channel targets and additional
iSCSI access control is needed. Also, static import allows automatic failover if the Fibre Channel
target LU is reached by redundant Fibre Channel ports.
Cisco MDS 9000 Fabric Manager Switch Configuration Guide
Configuring iSCSI
24-27
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