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Installation and Maintenance 3-3
Compaq Confidential Need to Know Required
Writer: Bob Young Project: RAID Array 3000 Controller Shelf Hardware Users Guide Comments:
Part Number: EK-SMCPQ-UG. D01 File Name: d-ch3 Installation and Maintenance.doc Last Saved On: 12/4/00 1:08 PM
The target SCSI bus addresses of the drives in the device expansion shelves
(shown on each storage device in Figures 3-1 through 3-4) are controlled by a
switch on the side of the personality I/O module in each expansion shelf. In a
single expansion shelf configuration, the IDs are 0-5. In a double expansion
shelf configuration, the IDs in both expansion shelves are also 0-5 because
each shelf is connected to a separate device I/O bus from the controller.
In a three and four-shelf configuration (Figures 3-3 and 3-4, respectively), the
second expansion shelf on each device I/O bus is connected to the first via a
Trilink adapter and must be set to 8-13.
S
HR-1
0
9
6
5
P
/
S
P
/
S
P
/
S
P
/
S
4
3
2
10
Device
Expansion
Shelf
Controller
Shelf
UPS
Figure 3-1. Recommended single expansion shelf installation
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