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Example 3. Broken Loop (Disk Drive Removed)
In Figure 58 on page 407, disk drives 1 through 8 are connected to connectors A1 and
A2 of the SSA adapter 1, but the loop is broken because disk drive number 3 has
been removed. Disk drives 9 through 12 are connected to connectors B1 and B2 of the
same SSA adapter. Disk drives 13 through 16 are connected to connectors A1 and A2
of a different SSA adapter 2.
Although the missing disk drive is reported as an error, all the remaining disk drives can
still communicate with the using system. Disk drives 1 and 2 can communicate through
connector A1 of the SSA adapter 1. Disk drives 4 through 8 can communicate
through connector A2 of the SSA adapter. Disk drives 9 through 12 can communicate
through connectors B1 and B2 of the same SSA adapter (normal loop); disk drives 13
through 16 can communicate through connectors A1 and A2 of the SSA adapter 2.
406 User’s Guide and Maintenance Information