One DS5020 and up to six storage expansion enclosures

If you are cabling one DS5020 storage subsystem and up to six storage expansion

enclosures, Figure 42 shows the correct cabling topology.

1A
1B
DS5020
Port 2, drive channel 1
1A1B
1A
1B
1A
1B
Port 1, drive channel 1Port 1, drive channel 2Port 2, drive channel 2
1A1B
1B
1A
1B
1A1B
1A
1B
1B
1A
1B
1B
1A
1A
1A
Figure42. Cabling for one DS5020 and up to six storage expansion enclosures
64 IBM System Storage DS5020 Storage Subsystem: Installation, User’s, and Maintenance Guide