- JMR Electronics Computer Accessories User Manual

1G Option Setting
By setting the rotary switch settings to “7” - “F”, the enclosure will operate in 1G
mode. Both the upper set of switches and lower set of switches must be set to the
same value. The drive ID’s will revert to the default value of 0-14 and can not be
changed. Therefore, if daisy chaining to another enclosure, care must be taken
not to use the same drive ID’s on the same loop.
ID Conflict
When two devices share the same ID, a conflict occurs. This should not happen
unless two or more enclosures are daisy chained together. If devices in one
enclosure conflict with devices in another enclosure, the devices will re-arbitrate
ID and resolve the conflict.
Option Settings
Two option settings are located on the mid-plane board. To access the jumpers,
the cover must be removed and the personality boards removed. The diagram
below shows the location of the option settings on the mid-plane board.
FORTRA

FORCE
4
G15 & G15+ RAID System Installation Guide Rev A
4-3
0 1 2 3 4 5 6 7
0 0 16 32 48 64 80 96 112
1 1 17 33 49 65 81 97 113
2 2 18 34 50 66 82 98 114
3 3 19 35 51 67 83 99 115
4 4 20 36 52 68 84 100 116
5 5 21 37 53 69 85 101 117
6 6 22 38 54 70 86 102 118
7 7 23 39 55 71 87 103 119
8 8 24 40 56 72 88 104 120
9 9 25 41 57 73 89 105 121
10 10 26 42 58 74 90 106 122
11 11 27 43 59 75 91 107 123
12 12 28 44 60 76 92 108 124
13 13 29 45 61 77 93 109 125
14 14 30 46 62 78 94 110 126
15 15 31 47 63 79 95 111 127