RAID Array 3000 Controller Shelf
Figure 3–12 Controller/ Three Device Expansion Shelf Cabling Diagram
DEVICE EXPANSION SHELF # 3
P/S | P/S |
A | B |
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DEVICE EXPANSION SHELF # 2
P/S | P/S | ||
A |
| B | |
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DEVICE EXPANSION SHELF # 1
P/S | P/S |
A | B |
Personality I/O
Module
Personality I/O
Module
Personality I/O
Module
TRI
Link 
OFF ON
1
2
3
4
SCSI Bus
Termination Switch (S4)
OFF ON 1 
2 
3 
4 
SCSI Bus Termination Switch (S4)
OFF ON
1
2
3
4
SCSI Bus
Termination Switch (S4)
ON
OFF 
1 2 3 4 5 6 7
SCSI Bus Address
Switch (S3)
ON
OFF 
1 2 3 4 5 6 7
SCSI Bus Address
Switch (S3)
ON
OFF 
1 2 3 4 5 6 7
SCSI Bus Address
Switch (S3)
CONTROLLER SHELF
P/S | P/S |
A | B |
SCSI Cable
Host 0 I/O | Device | ||||
| Module |
| I/O Module | ||
| CTR 0 |
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Serial Control
Cable
Maintenance
PC
SCSI Cable
To Host System
