ADIC FCR 200 manual Auto Addressing, Scsi Bustargetlun

Table 5-1	Indexed Addressing
FPC LUN Value		SCSI BUS:TARGET:LUN
	14	0:15:0
	15	0:0:1
	16	0:1:1
	(…)	(…)

The Indexed Addressing table has the structure shown in Table 5-1. The FCR200 will allow up to 80 device entries to be mapped. The index table can be manually edited, and is then saved to FLASH memory. Configuration assists allow for the table to be filled in order of increasing target, or LUN, as may be desired for the specific requirements needed. An assist is also provided to perform device discovery, and fill the table in the order that devices are discovered on a SCSI bus.

Indexed Addressing mode is recommended for environments where device configuration may change, and a fixed mapping from the application to the target devices is required. An example of such an environment is where hot plug devices may be used, thereby changing the order of devices on a SCSI bus.

Auto Addressing

The Auto Addressing option is similar to Indexed Addressing, but with the distinction that the table used is created through SCSI device discovery upon power up or reset, and not otherwise retained. As the unit performs device discovery on a SCSI bus, the Index table is filled with adjacent FCP LUNs referencing each subsequent SCSI device. The host system will then detect every attached device without voids, allowing full device discovery to the host. This allows easy configuration in environments where device ordering is not important, and hot plugging of SCSI devices will not occur. Configuration allows for discovery to be performed in order of target or LUN, as desired for the specific environment.

Auto Addressing, target mode is configured as the default mode of the FCR200.

Auto Addressing 5-7