Network Card User Manual

Simple Loop — Two Disk Drives Missing
If two or more disk drives are switched off, fail, or are removed from the loop, some
disk drives might become isolated from the SSA adapter.
In Figure 4, disk drives 3 and 7 have been removed. Disk drives 1 and 2 can
communicate with the using system only through connector A1 of the SSA adapter. Disk
drive number 8 can communicate with the using system only through connector A2 of
the SSA adapter. Disk drives 4, 5, and 6 are isolated from the SSA adapter.
Using system
Disk
1
Disk
2
Disk
3
Disk
4
Disk
5
Disk
6
Disk
7
Disk
8
A1 A2 B1 B2
Figure 4. Simple Loop with Two Disk Drives Missing
10 User’s Guide and Maintenance Information