SRX380 Site Guidelines and Requirements

General Site Installation Guidelines for the SRX380 Firewall

The following precautions help you plan an acceptable operating environment for your SRX380 Firewall and avoid environmentally caused equipment failures:

For the cooling system to function properly, the airflow around the chassis must be unrestricted. Allow sufficient clearance between the front and back of the chassis and adjacent equipment. Ensure that there is adequate circulation in the installation location.
Follow the prescribed electrostatic discharge (ESD) prevention procedures to prevent damaging the equipment. Static discharge can cause components to fail completely or intermittently over time.
Ensure that blank Mini-PIM panels are installed in all empty Mini-PIM slots to prevent any interruption or reduction in the flow of air across internal components.

SRX380 Firewall Environmental Specifications

Table 1 provides the required environmental conditions for normal operations of the SRX380 Firewall.

Table 1: Environmental Specifications for the SRX380 Firewall
Description	Value
Altitude	2000 m (6561 ft)
Relative humidity	5% to 90%, noncondensing
Temperature	Operational temperature with Mini-PIMs—32° F (0° C) to 104° F (40° C) @ 2000 meters. Operational temperature without Mini-PIMs—32° F (0° C) to 122° F (50° C) @ 2000 meters. Nonoperational temperature— -4° F (-20° C) to 158° F (70° C)
Average power consumption	150 W (without PoE)

SRX380 Firewall Electrical Wiring Guidelines

Table 2 describes the factors you must consider while planning the electrical wiring for the SRX380 at your site.

CAUTION:

It is particularly important to provide a properly grounded and shielded environment and to use electrical surge-suppression devices.

Table 2: Site Electrical Wiring Guidelines for the SRX380 Firewall
Site Wiring Factor	Guideline
Signaling Limitations	To ensure that signaling functions optimally: Install wires correctly. Improperly installed wires can emit radio interference. Do not exceed the recommended distances or pass wires between buildings. The potential for damage from lightning strikes increases if wires exceed recommended distances or if wires pass between buildings. Shield all conductors. The electromagnetic pulse (EMP) caused by lightning can damage unshielded conductors and destroy electronic devices.
Radio Frequency Interference (RFI)	To reduce or eliminate the emission of RFI from your site wiring: Use twisted-pair cables with a good distribution of grounding conductors. Use a high-quality twisted-pair cable with one ground conductor for each data signal when applicable, if you must exceed the recommended distances.
Electromagnetic Compatibility (EMC)	Provide a properly grounded and shielded environment and use electrical surge-suppression devices. Strong sources of electromagnetic interference (EMI) can cause the following damage: Destroy the signal drivers and receivers in the device Conduct power surges over the lines into the equipment, resulting in an electrical hazard Note: If your site is susceptible to problems with EMC, particularly from lightning or radio transmitters, you might want to seek expert advice.

CAUTION:

To comply with intrabuilding lightning or surge requirements, the intrabuilding wiring must be shielded. The shielding for the wiring must be grounded at both ends.

To reduce the risk of fire, use 26 AWG telecommunication line wire.

SRX380 Firewall Physical Specifications

Table 3 lists the physical specifications for the SRX380.

Table 3: Physical Specifications for the SRX380 Firewall
Physical Specification of Chassis	Value
Depth	With handles—20.47 in. (52 cm) Without handles—18.7 in. (47.5 cm)
Width	17.36 in. (44.09 cm)
Height	1.72 in. (4.37 cm)
Weight (with single power supply unit)	15 lb (6.80 kg)

SRX380 Firewall Clearance Requirements for Airflow and Hardware Maintenance

When planning the installation site for the SRX380 Firewall, you must allow sufficient clearance around the device. Consider the following requirements:

For the operating temperature of the services gateway to be optimal, the airflow around the chassis must be unrestricted. The three fixed fans provide front-to-back chassis cooling.
For service personnel to remove and install hardware components, there must be adequate space at the front and back of the device. Allow at least 24 in. (61 cm) both in front of and behind the device.
If you are mounting the device in a rack with other equipment, ensure that the exhaust from other equipment does not blow into the intake vents of the chassis.

For information on the airflow through the SRX380 Firewall chassis, see SRX380 Cooling System.

Rack Requirements

The SRX380 Firewall is designed to be installed on four-post racks. Table 4 provides the rack requirements and specifications for the SRX380.

Table 4: Rack Requirements for the SRX380 Firewall
Rack Requirement	Guidelines
Rack type	Use a four-post rack that provides bracket holes or hole patterns spaced at 1-U (1.75 in. or 4.45 cm) increments and that meets the size and strength requirements to support the weight of the device.
Mounting bracket hole spacing	The holes in the mounting brackets are spaced at 1-U (1.75 in. or 4.45 cm) increments. The device can be mounted in any four-post rack that provides holes spaced at that distance.
Rack size and strength	Ensure that the rack complies with the standards for a 19-in. rack as defined in Cabinets, Racks, Panels, and Associated Equipment (document number EIA-310–D) published by the Electronics Industry Association. Ensure that the rack rails are spaced widely enough to accommodate the external dimensions of the chassis. The outer edges of the front-mounting brackets extend the width to 19 in. (48.26 cm). Space the front and rear rack rails between 23 in. (58.5 cm) to 36 in. (91.4 cm) front-to-back. The rack must be strong enough to support the weight of the device. Ensure that the spacing of rails and adjacent racks provides for proper clearance around the device and rack.
Rack connection to building structure	Secure the rack to the building structure. If earthquakes are a possibility in your geographical area, secure the rack to the floor. Secure the rack to the ceiling brackets and to wall or floor brackets for maximum stability.

Cabinet Requirements

You can mount the SRX380 in an enclosure or cabinet that contains a four-post 19-in. open rack as defined in Cabinets, Racks, Panels, and Associated Equipment (document number EIA-310-D) published by the Electronics Industry Association.

Table 5 provides the cabinet requirements and specifications for the SRX380.

Table 5: Cabinet Requirements for the SRX380
Cabinet Requirement	Guidelines
Cabinet size and clearance	The minimum cabinet size for accommodating an SRX380 device is 36 in. (91.4 cm) deep. Large cabinets improve airflow and reduce the chance of overheating.
Cabinet airflow requirements	When you mount the device in a cabinet, ensure that ventilation through the cabinet is sufficient to prevent overheating. Ensure that the cool air supply you provide through the cabinet adequately dissipates the thermal output of the device. Ensure that the cabinet allows the hot exhaust air from the chassis to exit the cabinet without recirculating into the device. An open cabinet (without a top or doors) that employs hot air exhaust extraction from the top allows the best airflow through the chassis. If the cabinet contains a top or doors, perforations in these elements assist with removing the hot air exhaust. The SRX380 device fans exhaust hot air through the fans and power supplies. Install the device in the cabinet in a way that maximizes the open space on the FRU side of the chassis. This maximizes the clearance for critical airflow. Route and dress all cables to minimize the blockage of airflow to and from the chassis. Ensure that the spacing of rails and adjacent cabinets allows for proper clearance around the device and cabinet.

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