Installation Guide, Third Edition - Server Expansion Unit

Chapter 4

Cabling and Power Up

Configuring AC Line Status

Utilities can detect if power is applied to each of the AC input cords for the Server Expansion Unit. This

detection is achieved by sampling the status of the bulk power supplies. During installation, use the following

procedure to check the configuration for the AC line status and configure it to match the customer’s

environment.

NOTE Connection to the MP is performed through the core I/O card installed in the server.

The Server Expansion Unit follows the power configuration selected for the server.

Step 1. At the server MP prompt, enter cm. The command menu is displayed, and allowing the viewing and

configuring of various utilities controlled by the MP.

Step 2. From the command prompt (MP:CM>), enter pwrgrd. The pwrgrd command displays the current

power configuration. This command can also be used to change the power grid configuration. A

screen similar to the following appears:

Figure 4-46 The pwrgrd Command Screen

Step 3. Verify that the power grid configuration is correct by examining the output from the pwrgrd

command. The previous power configuration indicates that only grid A has been configured.

Step 4. To change the configuration, select the proper response and enter the appropriate numeric value

when Select Option: appears on the screen. If no change is desired, enter q and press the Enter key.

After the value has been entered, the MP will respond back and indicate that change has taken

effect.