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5-8 Understanding the Configuration
62-9301-01
SCC Addressing
The FCR200 implements the SCSI-3 Controller Commands
(SCC) (X3T10 Project 1047D Revision 6b 01-July-96) SCSI
storage array addressing to address SCSI devices attached to
the FCR200. The Access Method used is the SCC Logical Unit
Addressing method.
In SCC Addressing mode, the FCR200 will respond to FCP
commands, as in a SCC controller device. A subset of the SCC
behavior is implemented. LUN mappings corresponding to
the SCC Peripheral Device Addressing are interpreted as
controller commands, and are acted on by the FCR200
directly. LUN mappings using SCC Logical Unit addressing
are routed to the appropriate SCSI BUS:TARGET:LUN and
processed accordingly.
Further description of the FCR200 implementation of SCC
addressing is in
Appendix D
.
SCSI Host to Fibre Channel Target
Configuration
This section describes the configuration of the FCR200 when
acting as a target to a SCSI Initiator, passing requests through
to Fibre Channel targets.
SCSI-to-Fibre Channel mapping is implemented in a fashion
similar to Fibre Channel-to-SCSI Indexed Addressing mode.
The FCR200 responds to commands issued to a set of
configured SCSI IDs, and maps these to Fibre Channel
AL_PA/LUN values. The following table indicates a possible
mapping for SCSI LUN to Fibre Channel AL_PA:LUN.
Table 5-2 SCSI-to-Fibre Target:Channel Address
Mapping
SCSI BUS:TARGET:LUN
Fibre Channel
AL_PA LUN
0:0:0 0xEF 0
0:1:0 0x02 0
0:2:0 0x04 0
0:3:0 0x08 0
0:4:0 0x0F 0