B-6 Sun StorEdge 3000 Family Installation, Operation, and Service Manual • May 2004
B.6 Setting the Loop ID on a Sun StorEdge
3510 FC JBOD Array
When a Sun StorEdge 3510 FC JBOD array is directly attached to a host, unique,
hard-assigned loop IDs are assigned to each drive in the JBOD array. A loop ID is the
decimal version of an AL_PA. The lowest number loop ID is the lowest priority
address on the loop.
On the left front side of a Sun StorEdge 3510 FC JBOD array, underneath the left
chassis ear, an ID switch is used to set loop IDs for the disk drives to different ranges
of values.
FIGURE B-1 ID Switch
By default, the ID switch on all Sun StorEdge 3510 FC JBOD arrays is set to 0 so the
range of IDs is automatically 0 to 11 for 12 drives (the IDs 12-15 are ignored). You
can leave the ID switch set to 0, or set it for whichever range of IDs you prefer.
The ID switch offers eight ID ranges. Each set contains 16 IDs. The last 4 IDs in each
range are ignored. These ranges are shown in
TABLE B-2.
TABLE B-2 ID Switch Settings for Sun StorEdge 3510 FC JBOD Arrays
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
Press to change the ID number
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