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Table 2–2
Switch
Number
11
12
Notes
Table 2–3
Thumb
Wheel
Switch
0
NOTE:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
IBM System Storage DCS9550 1S1 Storage Expansion Unit Installation, Service, and User Guide
Ops Panel Switch Functions (Default settings for DCS9550 1S1 Storage Expansion Unit
SCM usage at 1Gb/s)
Function
SOFT SELECT On
Not Used
1 ON = switch to the left, OFF = switch to the right.
Mode 1 Drive Addressing
Device Slot SEL_ID
Mode 1
0
1
2
3
4
Thumbwheel switch setting 0 causes a blinking amber LED indicating an invalid ID
condition; however, actual addressing is as stated.
0
1
2
3
4
16 17 18 19 20 21 22 23 24 25 26
32 33 34
35 36 37 38 39 40 41 42
48 49 50 51 52 53 54 55 56 57 58
64 65 66 67 68 69 70 71 72 73
80 81 82 83 84 85 65 87 88 89 90 91
96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111
96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111
96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111
96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111
96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111
96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111
96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111
96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111
96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111
Recommended
Setting
Off
5
6
7
8
9
5
6
7
8
9
74
Definition
Selects functions using the
hardware switches
10
11
12
13
14 15
10
11
12
13
14 15
27
28
29 30
43 44
45 46
59
60
61 62
75 76
77 78
92
93 94
Installation
31
47
63
79
95
25
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