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Power Components
Oracle offers AC or DC power options for the Acme Packet 3900. The power supplies
are user-replaceable, hot swappable components. Each power supply is accessed
from the rear panel of the Acme Packet 3900. The power supply located at right
is designated as power supply 0 (PS0) while the power supply located at left is
designated as power supply 1 (PS1).
Power Supply Redundance
During normal operation, the Acme Packet 3900 is load-balanced and draws power
from both supplies. The two power supplies also provide hardware redundancy. If
a power supply fails, the Acme Packet 3900 can rely on only one functional power
supply to sustain normal operation. A malfunctioning power supply must be removed
and replaced as soon as possible. If the Acme Packet 3900 starts up with only one
power supply, the alarm LED will blink continuously.
The grounding terminals are used to attach the Acme Packet 3900 chassis to a local
earth ground. The terminals are located between MGMT 2 port and USB port on the
Acme Packet 3900 rear panel. The Acme Packet 3900 is shipped with nuts attached to
the terminals along with a pre-made ground cable.
AC Power
The auto-sensing AC power supply is rated at 110-240 VAC, 50-60 Hz, and is supplied
with an IEC connector. The handle on the front panel of the power supply is used
to remove the power supply from the chassis. The black locking tab, when moved
from left to right, unlocks the power supply from the chassis when removing the power
supply.
Chapter 2
Power Components
2-8
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