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Appendix B
Indexed Addressing Option
Indexed Addressing allows for host bus adapter drivers that only use Peripheral
Device addressing to access SCSI devices attached to the PSFR-CP41 unit.
This is done by use of a table which is indexed by sequential LUN values,
indicating selected BUS:TARGET:LUN devices. It is not possible in this mode to
address the PSFR-CP41 unit as a controller unit directly when using the
Indexed Addressing option. The size of the table is equal to the number of
busses times the number of targets per bus, less one initiator ID per bus, times
the number of LUNs per target. The index table can be manually edited. Config-
uration tools allow for the table to be filled in order of increasing bus, target, or
LUN, as may be desired for the specific requirements needed. A method is also
provided to perform device discovery, and fill the table in the order that devices
are discovered on the SCSI busses. As an example, if there are three devices
connected to the SCSI bus at BUS:TARGET:LUN 0:0:0, 0:1:0 and 0:2:0, The
Indexed table will look like Table "Example of Fibre Channel-to-SCSI mapping
table".
i
The - indicates a null entry.
FC_LUN
0x00
0x01
0x02
0x03
:
:
:
:
0x0B
0x0C
0x0D
0x0F
Example of Fibre Channel-to-SCSI mapping table
U42093-J-Z716-1-74
BUS
TGT
0
0
0
1
0
2
-
-
:
:
:
:
-
-
-
-
-
-
-
-
Indexed Addressing Option
LUN
0
0
0
-
:
:
-
-
-
-
Operating Manual
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