Addressing Methods and Table Structures
Indexed Addressing Method
Indexed addressing allows for host bus adapter (HBA) drivers that use only Peripheral Device Addressing to access SCSI devices attached to the router. This addressing is done by use of a table, which is indexed by sequential LUN values, indicating the selected BUS:TARGET:LUN devices. In this mode, it is not possible to address the router as a controller unit directly.
The maximum size of the table is equal to the number of buses multiplied by the number of targets per bus less one Initiator ID per bus, multiplied by the number of LUNs per target. The index table can be manually edited. A method is also provided to perform SCSI device discovery and fill the index table.
See Table 25 for the Indexed addressing table.
Table 25: Indexed Addressing Table
FCP LUN Value | SCSI BUS:TARGET:LUN |
0 | 0:0:0 |
1 | 0:1:0 |
2 | 0:2:0 |
3 | 0:3:0 |
4 | 0:4:0 |
5 | 0:5:0 |
6 | 0:6:0 |
| (0:7:0 occupied by Initiator ID) |
7 | 0:8:0 |
(...) | (...) |
13 | 0:14:0 |
14 | 0:15:0 |
15 | 1:0:0 |
16 | 1:1:0 |
17 | 1:2:0 |
(...) | (...) |
Network Storage Router | 177 |
