Asus AP8000 Hardware Reference Manual - Page 30

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SCSI Backplane Board Front Side
• 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 set-
tings are made through DIP switches located on the SCSI backplane board.
ON
1
2
3
4

Using the SCSI Backplane Boards Separately

Each SCSI backplane board supports four hard drives. If you are only in-
stalling 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
ON
ID0
OFF
ID1
30
IV. Hardware Setup
SET1
SET2
SET3 (Reserved)
SET4 (Reserved)
Slot1
Slot2
ID6
ID8
ID5
ID9
AP8000 Hardware Reference Guide
Notch Out (top)
Four SCSI Backplane Board
Docking Connectors
Notch Out (bottom)
Default Setting
SET1
on
ON
SET2
off
1
2
3
4
SET3
off
1
2
3
4
SET4
off
Slot3
ID12
ID13