IBM Power 720 Overview page 106

When connecting one drawer to the server, the suggested approach is to have both FC EJ03
ports connected to the drawer for redundancy, as shown on Figure 2-32.
Power 720
or
Power 740
Power 740
Figure 2-32 Connection between one or two FC EJ03 cards and a single FC EDR1 drawer
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IBM Power 720 and 740 Technical Overview and Introduction
T1
8X
FC EJ03
8X
T2
FC EDR1
ERM - C1
PSU
P1
T1 T2
T1
8X
FC EJ03
8X
T2
T1
8X
FC EJ03
8X
T2
FC EDR1
ERM - C1
PSU
P1 T1 T2
PCIe Gen2 8X cable
PCIe Gen2 8X cable
ERM - C2
T3 T1 T2
PCIe Gen2 8X cable
PCIe Gen2 8X cable
ERM - C2
T3 T1 T2
PSU
P2
T3
PSU
T3 P2