Indexed Addressing Option
Note
The
Indexed Addressing allows for host bus adapter drivers that only use Peripheral Device addressing to access SCSI devices attached to the FCR200 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 FCR200 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. Configuration 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 a SCSI bus at BUS:TARGET:LUN 0:0:0, 0:1:0 and 0:2:0, The Indexed table will look like Table
Table | Example of Fibre | |||
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FC_LUN |
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0x00 | → | 0 | 0 | 0 |
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0x01 | → | 0 | 1 | 0 |
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0x02 | → | 0 | 2 | 0 |
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0x03 | → | – | – | – |
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: | : | : | : | : |
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: | : | : | : | : |
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0x0B | → | – | – | – |
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0x0C | → | – | – | – |
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0x0D | → | – | – | – |
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0x0F | → | – | – | – |
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