Juniper SRX 5800, Hardware Manual

Page: 172 / 536

user@host>
show chassis alarms
NOTE: If the SRX5800 chassis has redundant power supply modules, and if one PSM
fails, the card can still be online. Only the No redundant power supply alarm is raised.
If the SRX5800 chassis does not have redundant power supply modules, failure of one
PSM can cause the cards to go offline, depending on the total chassis power available at
that time.
3. When the power consumption of a card is more than the allocated budget for 60 seconds, PWR Range
Overshoot alarm is raised for that particular card.
user@host>
show chassis alarms
Calculating Power Requirements to Support Eight SRX5K-SPC3s with Three
IOC3s or Three IOC4s on an SRX5800 Services Gateway
Ambient temperature is the maximum operating temperature for a device. By configuring an ambient
temperature on SRX5800 Services Gateway, you can optimize power provisioned for SPC3, IOC3 and
IOC4 on SRX5800.
After you set the ambient temperature of SRX5800 to 25° C, SRX5800 can support eight SRX5K-SPC3s
with three IOC3s or three IOC4s.
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 38 on page 174 and Figure 15 on page 49 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.
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