HP Integrity rx8640 and HP 9000 rp8440 Servers Installation Guide

1. For locking type receptacles, line up the key on the plug with the groove in the receptacle.
2. Push the plug into the receptacle and rotate to lock the connector in place.
WARNING! Do not set site AC circuit breakers serving the processor cabinets to ON before
verifying that the cabinet has been wired into the site AC power supply correctly. Failure to
do so can result in injury to personnel or damage to equipment when AC power is applied
to the cabinet.
8. Set the site AC circuit breaker to ON.
9. Set the server power to ON.
10. 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, each source can be plugged into the server, increasing system reliability if
one power source fails. The main power source is defined to be A0 and A1. The redundant power
source is defined to be B0 and B1. See Figure 37 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 37 AC Power Input Labeling
B1 A1
B0
A0
The power distribution for the bulk power supplies is as follows:
• A0 input provides power to BPS 0, BPS 1, and BPS 2
• A1 input provides power to BPS 3, BPS 4, and BPS 5
• B0 input provides power to BPS 0, BPS 1, and BPS 2
• B1 input provides power to BPS 3, BPS 4, and BPS 5
For information on how input power cords supply power to each BPS, see Figure 38.
Cabling and Powering On the Server 55