Power supplies, Ower, Upplies – Juniper Networks 5000 SERIES Manuel d'utilisation

Page 13

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Power Supplies

NetScreen-5000 Series

5

P

OWER

S

UPPLIES

The NetScreen-5000 Series can use two kinds of power supplies:

Alternating Current (AC) Power Supply

Direct Current (DC) Power Supply

The slots for these power supplies are located in the back of the NetScreen-5200 and on
the front of the NetScreen-5400.

When two or more power supplies are in service, they share the power load equally. The
power supplies are hot-swappable, so you can remove one and replace it without affecting
operation. Each power supply is intended to receive power from separate feeds.

When one power supply fails, the other(s) automatically assume the full load and the
device logs a system alarm. This alarm is viewable through the WebUI or a console
accessing the NetScreen Command Line Interface (CLI). The Alarm LED on the
management module glows red in response to any power supply failure.

Note:

You can order a NetScreen-5000 Series that runs on DC power. For DC-powered

units, the power supply has a DC terminal block with three sockets.

Warning:

You must replace the failed power supply as soon as possible; otherwise, system

damage may result. See

“Servicing the Device” on page 35

for instructions on how to

replace a power supply.

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