One DS4800 and four storage expansion enclosures
If you are cabling one DS4800 Storage Subsystem to four storage expansion
enclosures, Figure 51 on page 73 shows the recommended cabling scheme.
Figure 50. View 2: One DS4800 and two storage expansion enclosures cabling — Not
recommended
72 IBM System Storage DS4800 Storage Subsystem: Installation, User’s, and Maintenance Guide