Target Mode setup for HP
SCSI Target Mode Configuration for HP 660fx and 1200ex libraries with 6 or More Drives
(Drives on both SCSI Buses).
Front Panel Command Sequence for Setting the HP Library to Target Mode Addressing:

Example of SCSI ID Settings for 10 Drive HP Library:
BUS #1
Library controller SCSI ID = 0
Drive 1 SCSI ID = 1
Drive 2 SCSI ID = 2
Drive 3 SCSI ID = 3
Drive 4 SCSI ID = 4
BUS #2
Drive 5 SCSI ID = 0
Drive 6 SCSI ID = 1
Drive 7 SCSI ID = 2
Drive 8 SCSI ID = 3
Drive 9 SCSI ID = 4
Drive 10 SCSI ID = 5