Juniper Networks Security Threat Response Manager 5000 사용자 설명서

Power Supplies

NetScreen-5000 Series 

3

P

OWER

 S

UPPLIES

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

Direct Current (DC) Power Supply

Alternating Current (AC) 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 
device 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.

NetScreen-5200 Power Recommendations

Although the NetScreen-5200 can run with one power supply, it is advisable to install 
both. This practice minimizes the likelihood of system failure due to individual power 
supply failure.

When either power supply fails, the Alarm LED on the management module glows red. If 
both are operational, then the Alarm LED is off. For more information on power supply 
LEDs, see Appendix B, 

.

NetScreen-5400 Power Recommendations

When the NetScreen-5400 contains only two modules, it can operate with one power 
supply. However, if the system contains three or four modules, the system requires at 
least two power supplies. In either case, it is advisable to install all three power supplies. 
This practice minimizes the likelihood of system failure due to individual power supply 
failure.

When any power supply fails, the Alarm LED on the management module glows red. 
While all three are operational, the Alarm LED is off. For more information on power 
supply LEDs, see Appendix B,