IBM Midrange System DS4000 Series Hardware Manual page 426

View Connections
Before starting any analysis of drive-side channel problems, it is essential to have a clear
understanding of the cabling topology. By selecting Storage Subsystem  View 
Connections from the Storage Manager Subsystem Management window, we are presented
with a list of drive-side cable connections, as shown in Figure 7-58. This can be used to
compile a topology diagram.
Figure 7-58 View Connections window
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IBM Midrange System Storage Hardware Guide