Chapter 1 Overview

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, the Alarm LED is off. For more information on power supply LEDs, see Appendix B, Port Descriptions and LED Status.

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, Port Descriptions and LED Status.

The DC Power Supply

The DC power supply weighs about three pounds. The faceplate contains a power LED, a power switch, a cooling fan vent, and three DC power terminal blocks that connect to power cables.

The figure below shows the NetScreen-5200 DC power supply.

Thumbscrew

Power

 

DC Power

LED

 

 

Terminal

 

 

 

 

Blocks

 

 

 

 

 

 

 

Grounding

 

 

 

 

Screw

 

 

 

Power Switch

6

User’s Guide

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Juniper Networks 5000 SERIES NetScreen-5200 Power Recommendations, NetScreen-5400 Power Recommendations, DC Power Supply