IBM 61Y 사용자 설명서
98
Hardware Maintenance Manual: xSeries 250
The hot-swap-drive backplane controls the SCSI IDs for the internal hot-swap drive
bays. However, when you attach SCSI devices to the external SCSI connector, you
must set a unique ID for the device. Refer to the information that is provided with the
device for instructions to set its SCSI ID.
bays. However, when you attach SCSI devices to the external SCSI connector, you
must set a unique ID for the device. Refer to the information that is provided 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.
connectors.
Standard (SCSI channel A)
Optional (SCSI channel B)
Drive bay 1: SCSI ID 0
Drive bay 1: SCSI ID 11
Drive bay 2: SCSI ID 1
Drive bay 2: SCSI ID 12
Drive bay 3: SCSI ID 2
Drive bay 3: SCSI ID 13
Drive bay 4: SCSI ID 3
Drive bay 4: SCSI ID 14
Drive bay 5: SCSI ID 4
Drive bay 5: SCSI ID 15
Backplane: SCSI ID 8
Backplane: SCSI ID 9
Table 14. SCSI IDs for hot-swap hard disk drives and
backplanes (standard configuration).
backplanes (standard configuration).
Table 15. 68-pin SCSI connector pin-number assignments.
Pin
Signal
Pin
Signal
1
+Data 12
35
-Data 12
2
+Data 13
36
-Data 13
3
+Data 14
37
-Data 14
4
+Data 15
38
-Data 15
5
+Data P1
39
-Data P1
6
+Data 0
40
-Data 0
7
+Data1
41
-Data 1
8
+Data 2
42
-Data 2
9
+Data 3
43
-Data 3
10
+Data 4
44
-Data 4
11
+Data 5
45
-Data 5
12
+Data 6
46
-Data 6
13
+Data 7
47
-Data 7
14
+Data P
48
-Data P
15
Ground
49
Ground
16
DIFFSENS
50
Ground
17
Term power
51
Term power
18
Term power
52
Term power
19
Reserved
53
Reserved
20
Ground
54
Ground
21
+Attention
55
-Attention
22
Ground
56
Ground
23
+Busy
57
-Busy
24
+Acknowledge
58
-Acknowledge
25
+Reset
59
-Reset
26
+Message
60
-Message
27
+Select
61
-Select
34
1
68
35