Chapter 2. IBM DS8880 hardware components and architecture  57 Figure 2-33 WWPN ports assignment for I/O Enclosure 7 Figure 2-32 WWPN ports assignment for I/O Enclosure 6 Figure 2-31 WWPN ports assignment for I/O Enclosure 5 Figure 2-31 shows The WWPN ports for enclosure 5. Figure 2-32 shows The WWPN ports for enclosure 6. Figure 2-33 shows The WWPN ports for enclosure 7.