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DC Power Supply

In a DC power configuration, the services gateway contains one to four DC power supplies, located at the rear of the chassis in slots PEM0 and PEM1 (SRX 3400) or PEM0 through PEM3 (SRX 3600). Each power supply provides power to all components in the services gateway. When multiple power supplies are present, they share power almost equally within a fully populated system. The multiple DC power supplies provide power redundancy. If one power supply fails or is removed, the remaining power supplies redistributes the electrical load without interruption. The device reassesses the power required to support its configuration and issues errors if the available power is insufficient.

Figure 1: DC Power Supply

Image g036076.gif

Table 1 shows the power supply support for the SRX 3400 and SRX 3600 services gateways.

Table 1: Power Supply Support


Power Supply Slots

Minimum Number of Power Supplies

Maximum Number of Power Supplies

SRX 3400

PEM0 and PEM1



SRX 3600

PEM0 through PEM4



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