SCSI Bus Addressing Issues

 

The following considerations apply only to newer jukeboxes where the jukebox is able to report the SCSI IDís of the drives that are configured within the jukebox and whether a drive is on a different bus than the juke controller.

 

Note: Buses on the server system (mother board) are numbered 0,1,2, 3 etc. Each bus is serviced by a SCSI PORT driver which is numbered in the same way: ScsiPort0, ScsiPort1, etc. The concept of lower or higher bus is based on the bus number associated with that bus.

 

1.    For Single Bus jukeboxes: No addressing requirements.

2.    For Two Bus jukeboxes: No requirements.

3.    For three bus jukeboxes: Drives that are configured on a separate Bus from that of the juke controller MUST have unique SCSI IDís from ANY drive on the other non-juke controller bus. Any stand-alone drives must be on their own bus and this must be the highest bus on the server system.

 

Example setup:

 

image\ebx_1596726297.gif

 

4.    Daisy-chaining multi-bus boxes: All drives and the jukebox controller for the first juke must be on a lower bus on the server system then the second Juke controller and drives. This rule applies for each jukebox daisy-chained. Rule 3 applies. Any stand-alone drives must be on their own bus and this must be the highest bus on the system.

 

Example setup:

 

image\ebx_-336966704.gif