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Cisco SN 5428-2 Storage Router Software Configuration Guide
OL-4691-01
Chapter 1 Before Configuring SN 5428-2 Storage Router Software
SN 5428-2 Storage Router Overview
SN 5428-2 Storage Router Overview
The Cisco SN 5428-2 Storage Router provides universal access to storage over IP networks. The storage
router software controls the operation of the Cisco SN 5428-2 Storage Router. You can configure the
software to provide the following types of access to storage over IP networks:
• SCSI routing only
• Transparent SCSI routing only
• FCIP only
• SCSI routing and FCIP
• Transparent SCSI routing and FCIP
SCSI routing provides IP hosts with access to Fibre Channel (FC) storage devices, using iSCSI protocol.
The iSCSI protocol is an IETF-defined protocol for IP storage (ips).
Note For more information about the iSCSI protocol, refer to the IETF standards for IP storage at
http://www.ietf.org.
With SCSI routing, storage device access is managed primarily in the SN 5428-2. (See Figure 1-1.)
Figure 1-1 SCSI Routing
Transparent SCSI routing provides IP hosts with transparent access to intelligent storage arrays using
iSCSI protocol; that is, each IP host is presented as an FC host to an intelligent storage array. With
transparent SCSI routing, availability of storage devices is managed primarily in the intelligent storage
array. (See Figure 1-2.)
Figure 1-2 Transparent SCSI Routing
IP hosts
IP
Cisco SN 5428-2
Storage access is managed
in the SN 5428-2.
85720
FC storage devices
IP hosts
The SN 5428-2
presents each IP host
as an FC host to the
storage array.
Cisco SN 5428-2
85721
Intelligent storage
array
Storage access is
managed in the
storage array.
FC
IP