IBM Advanced SerialRAID/X Installation Manual page 45

U s in g sy s te m
A1 A2 B1 B2
D isk D isk D isk D isk D isk D isk D isk D isk
1 2 3 4 5 6 7 8
Figure 3. SSA Loop with failed disk
If two or more disk drives are turned off, fail, or are removed from the loop, some disk
drives might become isolated from the SSA adapter
In Figure 4 on page 34, disk drives 3 and 7 have been removed. Disk drives 1 and 2
can communicate with the system only through connector A1 of the SSA adapter. Disk
drive number 8 can communicate with the system only through connector A2 of the
SSA adapter. Disk drives 4, 5, and 6 are isolated from the SSA adapter.
33
Appendix A. Connecting SSA Devices to the Adapter