CAUTION: Mixing different types (AC and DC) of power supplies in the same
chassisis not supported. Mixing different airflow modulesin the same chassis
is not supported.
Related
Documentation
QFX5110 Management Panel on page 18•
• QFX5110-48S Port Panel on page 9
• QFX5110-32Q Port Panel on page 12
• QFX5110 Hardware Overview on page 3
Understanding Hardware Redundancy of QFX5110 Components and Functionality
The following hardware components provide redundancy on a QFX5110:
•
Power supplies—The QFX5110 can operate with one powersupply. However, all QFX5110
switches, except the QFX5110-32Q-CHAS, ship with two power supplies preinstalled
for redundancy.. Each power supply provides power to all components in the switch.
If two power supplies are installed, the two power supplies provide full power
redundancy to the device. If one power supply fails or is removed, the second power
supply takes over the electrical load without interruption.
To provide power redundancy to the system, both power supplies must be installed.
Connect power source feed A to one power supply and power source feed B to the
second power supply.
CAUTION: Do not connect feed A and feed B to the same power supply
input terminal.
•
Cooling system—All QFX5110 switches, except the QFX5110-32Q-CHAS, ship with five
fan modules installed. If a fan module fails and is unable to keep the QFX5110 within
the desired temperature thresholds, chassis alarms occur and the QFX5110 can shut
down.
Related
Documentation
• QFX5110 AC Power Supply on page 33
• QFX5110 DC Power Supply on page 35
Copyright © 2017, Juniper Networks, Inc.8
QFX5110 Switch Hardware Guide
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