HP StorageWorks Network Storage Router M2402 V1.0 User Guide (March 2004)

Introduction
31Network Storage Router M2402 User Guide
SCSI to Fibre Channel Protocol Process
In this example, a SCSI host (initiator) on the SCSI bus issues commands and the
information is passed through the router to a target on the Fibre Channel Storage
Area Network (FC-SAN). Figure 11 is an illustration of the process and the
supporting table defines each step.
Figure 11: Converting SCSI to Fibre Channel Protocol
Item Process
1
A SCSI host issues a command to the router.
2
The SCSI controller in the router interprets the command and
places it in buffer memory.
3
The router processor interprets data and programs the router
Fibre Channel controller to process the transaction.
4
The router Fibre Channel controller translates data into an FCP
protocol packet and sends it to the Fibre Channel target.
5
The Fibre Channel target interprets the FCP protocol packet and
executes the command.
StorageWorks Router
FC Controller
Hub or Switch
FC Device
SCSI Host
FC Device
Memory Processor
SCSI Controller
Bus
Fibre Channel
SCSI
1
4
3
2
5