Juniper SRX 5800, Hardware Manual

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The SRX5800 Services Gateway chassis with normal-capacity AC power supplies has one overall zone.
The SRX5800 Services Gateway Chassis with high-capacity AC power supplies or either standard- or
high-capacity DC power supplies is zoned. Zoning means that certain components are powered by specific
power supplies (see Table 41 on page 179 and Figure 84 on page 179 for information on zoning). When
calculating power requirements, be sure that there is adequate power for each zone.
Three AC power supplies are mandatory for a SRX5800 Services Gateway chassis with normal-capacity
AC power supplies.
Table 41: SRX5800 Services Gateway Zoning
Components Receiving Power Power Supply (PEM) Zone
PEM 0 or 2 Zone 0
•
Lower fan tray
•
IOC/SPC slots 6 through 11
•
SCB slots 1 through 2
PEM 1 or 3 Zone 1
•
Upper fan tray
•
IOC/SPC slots 0 through 5
•
SCB slot 0
Figure 84: Power Distribution from DC and High-Capacity AC Power Supplies in the SRX5800 Services
Gateway Chassis
Zone 0 Zone 1
PEM0 PEM1 PEM2 PEM3
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Sample configuration for SRX5800 Services Gateway chassis with SRX5K-SCB (SCB1) and SRX5K-RE-13-20
(RE1):
•
Four high-capacity AC power supplies (using two feeds for each power supply); two supplies are active,
two are redundant.
•
Two Switch Control Boards (SCBs) with one Routing Engine installed in SCB 0
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