Srx5400 Services Gateway Component Redundancy - Juniper SRX5400 Hardware Manual

Table 3: Physical Specifications (continued)
Description
Fan tray weight
Air filter weight
Cable management weight
DC power supply weight
AC power supply weight
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SRX5400 Services Gateway Component Redundancy

Copyright © 2014, Juniper Networks, Inc.
Value
4.2 lb (1.9 kg)
1.0 lb (0.5 kg)
0.3 lb (0.14 kg)
6.2 lb (2.8 kg)
6.6 lb (3.0 kg)
SRX5400 Services Gateway Description on page 3
SRX5400 Services Gateway Chassis on page 7
SRX5400 Services Gateway Card Cage and Slots on page 9
SRX5400 Services Gateway Component Redundancy on page 5
The following major hardware components are redundant:
Power supplies—In the low-line (110 V) AC power configuration, the device contains
three or four AC power supplies (PSUs), located horizontally at the rear of the chassis
in slots PEM0 through PEM3
components in the device. When three PSUs are present, they share power almost
equally within a fully populated system. Four AC PSUs provide full power redundancy.
If one power supply fails or is removed, the remaining power supplies instantly assume
the entire electrical load without interruption. Three PSUs provide the maximum
configuration with full power for as long as the device is operational.
In the high-line (220 V) AC power configuration, the device contains two or four AC
power supplies located horizontally at the rear of the chassis in slots
(left to right). Each AC power supply provides power to all components in the
PEM3
device. When two or more power supplies are present, they share power almost equally
within a fully populated system. If using only two PSUs, you must insert them into the
first and third PSU slots. Four AC power supplies provide full power redundancy. If one
power supply fails or is removed, the remaining power supplies instantly assume the
entire electrical load without interruption. Two power supplies provide the maximum
configuration with full power for as long as the device is operational.
In the DC configuration, two power supplies are required to supply power to a fully
configured device. One power supply supports approximately half of the components
in the device, and the other power supply supports the remaining components. The
addition of two power supplies provides full power redundancy. If one power supply
fails or is removed, the remaining power supplies instantly assume the entire electrical
Chapter 1: Introduction to the SRX5400 Services Gateway
(left to right). Each AC PSU provides power to all
PEM0 through
5