If two or more disk drive modules are turned off, fail, or are removed from the loop,
some modules might become isolated from the SSA adapter.
Figure 3-4 shows that disk drive modules in slots 2 and 4 have failed. The disk
drive module in slot 1 can communicate with the using system only through
connector A1 of the SSA adapter. The disk drive module in slots 5 and 6 can
communicate with the using system only through connector A2 of the SSA adapter.
The disk drive module in slot 3 is isolated from the SSA adapter.
Figure 3-4. Disk Drive Modules in Slots 2 and 4 Have Failed
Chapter 3. Error Code to FRU Index 3-63
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