Chapter 4: Drive Connection 85
The following table specifies the cabling pattern for a controller tray that is attached
to five to eight drive trays. The “Cable” column indicates that two cables are used for
each drive tray. In the rows for cable 9 and cable 10, for example, the “Xs” indicate
that the cables are connected to controller A, channel 1, port 7 and controller B,
channel 5, port 2 respectively. The “Bs” in these rows indicate that the other ends of
cable 1 and cable 2 are connected to port 1B of the top ESM (ESM A) and port 1B of
the bottom ESM (ESM B) of drive tray 5 respectively. This pattern continues, using
odd-numbered ports on controller A and even-numbered ports on controller B for
drive trays five through eight.
Table 11 One CE7922 Controller Tray CE7900 Controller Tray and Five to Eight
DE6900 Drive Trays without Trunking
Cable
Controller A Controller B
Channel Channel Drive Tray
Ch1 Ch2 Ch3 Ch4 Ch5 Ch6 Ch7 Ch8 5 6 7 8
Port Number Port Number ESM (Top or Bottom)
8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8 T B T B T B T B
9X B
10 X B
11 X B
12 X B
13 X B
14 X B
15 X B
16 X B
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