NetApp FC4600 Hardware Cabling Manual page 165

Chapter 6: Component Locations
Each controller in the CE7922 controller tray and the CE7900 controller tray has

four drive channels, and each drive channel has two ports, so each controller has
eight drive ports.
Controller A is inverted from controller B, which means that its drive channels

are upside-down.
Figure 2 Drive Channel Ports on the CE7922 Controller Tray and the CE7900
Controller Tray – Rear View
1. Drive Channel Ports
155