Asus AP8000 Hardware Reference - Page 30

IV. Hardware Setup Notch Out (top) IV. Hardware Setup SCSI ID Setting Four SCSI Backplane Board Docking Connectors SCSI Backplane Board Front Side Notch Out (bottom) • 4-11. SCSI ID Setting All SCSI devices, including this motherboard with onboard SCSI, must have a SCSI identification number that is not in use by any other SCSI device. There are sixteen possible ID numbers, 0 through 15. SCSI ID settings are made through DIP switches located on the SCSI backplane board. ON 1 2 3 4 SET1 SET2 SET3 (Reserved) SET4 (Reserved) Default Setting ON 1 2 3 4 1 2 3 4 SET1 on SET2 off SET3 off SET4 off Using the SCSI Backplane Boards Separately Each SCSI backplane board supports four hard drives. If you are only installing four or less hard drives in the hot-swap bays, only one SCSI backplane board is needed. You may also use two SCSI channels and treat each SCSI backplane board separately. The SCSI ID for the hard drives used in each slot is determined by the SCSI ID DIP switch. The switch controls two sets of SCSI IDs so individual ID settings cannot be made. The following table shows the results when setting the SCSI ID switch to either the ON or OFF position. SCSI ID Settings for Separate SCSI Backplane Boards (SET2 is always OFF) SET1 Slot0 Slot1 Slot2 Slot3 ON ID0 ID6 ID8 ID12 OFF ID1 ID5 ID9 ID13 30 AP8000 Hardware Reference Guide