Chapter 3. IBM System Storage DS4000 and DS5000 hardware 87
3.5.8 DS5020 storage subsystem drive-side cabling
The drive-side cabling for the DS5020 depends on how many expansion units you must
attach:
If you attach only one enclosure, make sure that you have one connection to each of the
controllers, thus using one of the two ports on each controller (controller A port 2 and
controller B port 1), as shown in Figure 3-64.
Figure 3-64 DS5020 drive cabling with one EXP