If you are using the optional redundant ac-power switch feature, you must fill out the redundant ac-power switch connection chart before this feature can be installed.
You can download the redundant ac-power switch connection chart from the following Web site:
www.ibm.com/storage/support/2145
To select the redundant ac-power switch connection chart, follow these steps:
Determine if you want to use the redundant ac-power switch to power one or two nodes. If you plan to power two nodes, the nodes must be in different I/O groups. Therefore, a cluster with a single I/O group requires two redundant ac-power switch units.
You must plan the route of the input power cables for the redundant ac-power switch units. These cables are connected to the front edge of the redundant ac-power switch and must be routed to the power distribution unit for the rack. You might have to leave a free slot in the rack to allow the cables to run from front to back.