Installation Guide, Sixth Edition - HP Integrity rx8620 Server

Chapter 2
Installation
Cabling and Power Up
70
Step 9. Set the site power circuit breaker to
ON.
WARNING SHOCK HAZARD
Risk of shock hazard while testing primary power.
Use properly insulated probes.
Be sure to replace access cover when finished testing primary power.
Step 10. Set the server power to
ON.
Step 11. Check that the indicator light on each power supply is lit.
Connecting AC Input Power
The server can receive AC input from two different AC power sources. If two separate power sources are
available, the server can be plugged into the separate power sources, increasing system reliability should one
power source fail. The main power source is defined to be A0 and A1. The redundant power source is defined
to be B0 and B1. See Figure 2-25 for the AC power input label scheme.
IMPORTANT When running the server with a single power source, you must use A0 and A1. Selecting
redundant power requires all four power cords connected to A0-A1-B0-B1.
Figure 2-25 AC Power Input Labeling
The power distribution for the Bulk Power Supplies is as follows:
B1 A1 B0 A0