Scsi Connector Pin-Number Assignments - IBM 6000R - Netfinity - 8682 Hardware Maintenance Manual

same SCSI channel do not attempt to transfer data simulta-
neously. SCSI devices that are connected to different SCSI
channels can have duplicate SCSI IDs. The following table
lists the SCSI IDs for devices that are connected to one
channel. Note that the hot-swap hard disk drive bay num-
bers are from bottom to top.
Standard
Drive bay 1: SCSI ID 0
Drive bay 2: SCSI ID 1
Drive bay 3: SCSI ID 2
Backplane: SCSI ID 8
Table 17. SCSI IDs for hot-swap hard disk drives and
backplanes
The hot-swap-drive backplane controls the SCSI IDs for the
internal hot-swap drive bays. However, when you attach a
SCSI device to the external SCSI connector, you must set a
unique ID for the device. Refer to the information that is pro-
vided with the device for instructions to set its SCSI ID.

SCSI connector pin-number assignments

The following table shows the pin-number assignments for
the 68-pin SCSI connectors.
Pin
1 +Data 12
2 +Data 13
3 +Data 14
4 +Data 15
5 +Data P1
6 +Data 0
7 +Data1
8 +Data 2
9 +Data 3
10 +Data 4
11 +Data 5
12 +Data 6
13 +Data 7
14 +Data P
15 Ground
16 DIFFSENS
17 Term power
18 Term power
19 Reserved
Table 18. 68-pin SCSI connector pin-number assignments
98
Netfinity 6000R Type 8682 Models 1RY, 2RY
34
68
Signal
Optional
Drive bay 4: SCSI ID 12
Drive bay 5: SCSI ID 13
Drive bay 6: SCSI ID 14
Backplane: SCSI ID 9
Pin
35 -Data 12
36 -Data 13
37 -Data 14
38 -Data 15
39 -Data P1
40 -Data 0
41 -Data 1
42 -Data 2
43 -Data 3
44 -Data 4
45 -Data 5
46 -Data 6
47 -Data 7
48 -Data P
49 Ground
50 Ground
51 Term power
52 Term power
53 Reserved
1
35
Signal