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.
Figure 2-21
Power Source vs. Power Distribution
A0
220 VAC*
*180-269 VAC
Voltage is present at various locations within the server whenever a power source is
WARNING
connected. This voltage is present even when the main power switch is in the off
position. Failure to observe this warning could result in personal injury or damage
to equipment.
NOTE
System firmware will prevent boot when a single power cord configuration is detected.
Chapter 2
BPS 0
A1
220 VAC*
Rear of Cabinet
BPS 1
B1
B0
220 VAC*
220 VAC*
Installation
Connecting AC Input Power
35