Juniper SRX220, Руководство по оборудованию

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CAUTION: Before removing or installing components of a functioning services
gateway, attach an electrostatic discharge (ESD) strap to an ESD point and
place the other end of the strap around your bare wrist. Failure to use an ESD
strap could result in damage to the services gateway.
Related
Documentation
SRX220 Services Gateway Description on page 3
•
•
SRX220 Services Gateway Front Panel and Back Panel Views on page 11
•
Monitoring the SRX220 Services Gateway Components Using LEDs on page 106
•
SRX220 Services Gateway Electrical Safety Guidelines and Warnings on page 151
SRX220 Services Gateway Cabinet Requirements
The SRX220 Services Gateway can be installed in a standard 800 mm (31.5 in.) or larger
enclosed cabinet.
Table 14 on page 31 provides the details on cabinet size, clearance,
and airflow requirements.
Table 14: SRX220 Services Gateway Cabinet Requirements
Specifications Cabinet Requirements
19 in. (48.3 cm) as defined in Cabinets, Racks, Panels, and Associated
Equipment (document number EIA-310-D) published by the Electronics
Industry Association ( http://www.eia.org ).
You can mount the services gateway horizontally in the cabinet.
Cabinet size
• The cabinet is at least 1 U (1.75 in. or 4.5 cm) high.
• The outer edges of the mounting brackets extend the width of the
chassis to 19 in. (48.3 cm), and the front of the chassis extends
approximately 0.5 in. (1.27 cm) beyond the mounting brackets.
• The minimum total clearance inside the cabinet is 30.7 in. (78 cm)
between the inside of the front door and the inside of the rear door.
NOTE: The holes for the mounting brackets are spaced 1.25 in. (3.2 cm)
apart, measured from the center of the hole.
Clearance requirements
•
Ensure that ventilation through the cabinet is sufficient to prevent
overheating.
• Ensure adequate cool air supply to dissipate the thermal output of
the device.
•
Install the device as close as possible to the front of the cabinet so
that the cable management system clears the inside of the front
door. Installing the chassis close to the front of the cabinet
maximizes the clearance in the rear of the cabinet for critical airflow.
• Route and dress all cables to minimize the blockage of airflow to
and from the chassis.
NOTE: A cabinet larger than the minimum size required provides better
airflow and reduces the chance of overheating.
Cabinet airflow
requirements
31 Copyright © 2016, Juniper Networks, Inc.
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