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Description

This article summarizes the best practice information for extending and maintaining the hardware of SRX devices. For complete information, refer to the "Maintaining Components" sections for your device in the Hardware Documentation here: Hardware Maintenance, Replacement, and Troubleshooting Procedures .

Note: This does not include virtual equipment. Please see the user guide storage vendors used for virtual-based SRX.

Solution

Branch SRX Series

Inspect the installation site for moisture, loose wires or cables, and excessive dust.
Ensure that airflow is unobstructed around the device and into the air intake vents.
Make sure that the power and grounding cables are arranged so that they do not obstruct access to other device components.
Periodically inspect the site to ensure that the grounding and power cables connected to the device are securely in place and that there is no moisture accumulating near the device.
It is recommended to use a surge protector for the power connection.
When the device is not in use, keep it powered off.
Ensure the fans ¹ , routing engine, and PICs are working properly. To display this status, use the command show chassis environment . The output is similar to the following:

user@host> show chassis environment     
Class Item                           Status     Measurement
Temp  Routing Engine                 OK         27 degrees C / 80 degrees F
      Routing Engine CPU             OK         27 degrees C / 80 degrees F
      Routing Engine                 Absent   
      Routing Engine CPU             Absent   
Fans  SRXSME Chassis Fan 0           OK         Spinning at normal speed
      SRXSME Chassis Fan 1           OK         Spinning at normal speed
      SRXSME Chassis Fan 2           OK         Spinning at normal speed
      SRXSME Chassis Fan 3           OK         Spinning at normal speed
Power Power Supply 0                 Absent   
      Power Supply 1                 OK

¹ NOTE: SRX100 and SRX110 models do not have fans or PIC slots.

High-End SRX Series

Inspect the installation site for moisture, loose wires or cables, and excessive dust.
Ensure that airflow is unobstructed around the device and into the air intake vents.
Do not run the device for more than a few minutes without the air filter in place. Because the fans are very powerful, they could pull small bits of wire or other materials into the services gateway through the unfiltered air take and damage the internal components.
Regularly inspect the air filter. A dirty air filter restricts airflow in the unit, impeding the ventilation of the chassis. It is recommended to replace the filter every six months by discarding. Do not attempt to clean or reuse them.
When device is not in use, keep it powered off.
Ensure the fans, routing engine and FPCs are working properly. To display this status, use the show chassis environment command. The output is similar to the following:

user@host> show chassis environment
Class Item                           Status     Measurement
Temp  PEM 0                          OK         30 degrees C / 86 degrees F
      PEM 1                          OK         30 degrees C / 86 degrees F
      PEM 2                          OK         35 degrees C / 95 degrees F
      PEM 3                          OK         35 degrees C / 95 degrees F
      Routing Engine 0               OK         29 degrees C / 84 degrees F
      Routing Engine 1               Absent
      CB 0 Intake                    OK         27 degrees C / 80 degrees F
      CB 0 Exhaust A                 OK         26 degrees C / 78 degrees F
      FPC 0 Intake                   OK         26 degrees C / 78 degrees F
      FPC 0 Exhaust A                OK         41 degrees C / 105 degrees F
      FPC 2 Intake                   OK         27 degrees C / 80 degrees F
      FPC 2 Exhaust A                OK         38 degrees C / 100 degrees F
Fans  Front Fan                      OK         Spinning at normal speed
      Middle Fan                     OK         Spinning at normal speed
      Rear Fan                       OK         Spinning at normal speed

Check the status of the power supplies, ensure that the online status is OK . The output is similar to the following:

user@host> show chassis environment pem
PEM 0 status:
  State                      Online
  Temperature                OK   34 degrees C / 93 degrees F  
  AC Input                   OK   118 Volts
  DC Output           Voltage(V) Current(A)  Power(W)  Load(%)
                          12        11            132      11    
PEM 1 status:
  State                      Online
  Temperature                OK   29 degrees C / 84 degrees F  
  AC Input                   OK   119 Volts
  DC Output           Voltage(V) Current(A)  Power(W)  Load(%)
                          12        10            120      10

Other Recommendations

Check the health of the storage media and ensure there are no bad sectors.
Ensure dual-root partitions are up to date to avoid mismatched versions in the event the primary root partition becomes corrupted.

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