Sun Microsystems StorEdge 3000 Series, Installation, Operation And Service Manual

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4-22 Sun StorEdge 3000 Family Installation, Operation, and Service Manual • March 2004
The ID switch offers eight ID ranges. Each set contains 16 IDs (the last four IDs in
each range are ignored). These ranges are shown in
TABLE 4-3
.
For an example of properly set loop IDs, consider the configuration shown in
FIGURE 4-12
. You need to make sure the RAID array and each of the two expansion
units have been assigned different loop IDs. If you set each of the loop ID switches
so that the RAID array is assigned loop ID 0, expansion unit 1 has loop ID 1, and
expansion unit 2 has loop ID 2. The range of IDs assigned to the drives is shown in
TABLE 4-4
.
5. Prepare the plastic left ear cap for replacement by aligning the inside round
notches of the cap with the round cylindrical posts (ball studs) on the ear.
6. Push the top and bottom of the ear cap onto the ear, pressing in on the top side
toward the center of the array first.
7. Continue pushing the top and bottom of the ear cap onto the ear, pressing on the
side toward the outside of the array.
Do not use force when placing a cap on an ear.
8. Lift the bezel into position and press it onto the front of the chassis until it is
flush with the front.
TABLE 4-3
ID Switch Settings for Expansion Units
ID Switch Setting Range of IDs
0 0–15
1 16–31
2 32–47
3 48–63
4 64–79
5 80–95
6 96–111
7 112–125
TABLE 4-4
Sample Array and Expansion Units With Different Loop IDs and Drive IDs
Fibre Channel Device Loop ID Switch Setting Range of Drive IDs
RAID array 0 0–15
Expansion unit 1 1 16–31
Expansion unit 2 2 32–47