HP Integrity rx7620 Server - User Service Guide, Sixth Edition

4 Cable Connections
This chapter describes cable connections within the server.
AC Input Power
The server has five line cord configurations:
• All four line cords (preferred configuration)
• Cords A0 and A1 only
• Cords B0 and B1 only
• Cords A0 and B0 only
• Cords A1 and B1 only
A single-line-cord configuration is not allowed.
Figure 4-1 Power Cord Configuration
The power cord configuration is passed to the operating system using the pwrgrd (Power Grid)
command. Each of the five selections in the pwrgrd command matches one of the configurations.
The appropriate option should be selected for the actual line cord configuration. With the correct
configuration selected, the LEDs should be green. When the pwrgrd command is invoked, the
following menu displays.
prompt> pwrgrd
Power grid configuration preference.
1. Grid A only (Cords A0,B0 required)
2. Grid B only (Cords A1,B1 required)
3. Grids A & B (Cords A0,A1,B0,B1 required)
4. Cords A0 & B0 only5. Cords A1 & B1 only
Select Option:
If two separate power sources are available, the two power supplies can be plugged into the
separate power sources, increasing system reliability should one power source fail.
AC Input Power 55