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SRX5800 Site Guidelines and Requirements

SRX5800 Firewall Environmental Specifications

Table 1 specifies the environmental specifications required for normal firewall operation. In addition, the site should be as dust-free as possible.

Table 1: Firewall Environmental Specifications

Description

Value

Altitude

No performance degradation to 10,000 ft (3048 m)

Relative humidity

Normal operation ensured in relative humidity range of 5% to 90%, noncondensing

Temperature

Normal operation ensured in temperature range of 32°F (0°C) to 104°F (40°C)

Nonoperating storage temperature in shipping crate: –40°F (–40°C) to 158°F (70°C)

Seismic

Tested to meet Telcordia Technologies Zone 4 earthquake requirements

Maximum thermal output

Standard-Capacity AC and DC power supplies

  • AC power: 20,160, BTU/hour (5912 W)

  • DC power: 17,057 BTU/hour (5002 W)

Note:

These specifications are estimates and subject to change.

High-Capacity AC and DC power supplies

  • AC power: 32,780 BTU/hour (9608 W)

  • DC power: 33,482 BTU/hour (9813 W)

Note:

These specifications are estimates and subject to change.
Note:

Install the firewall only in restricted areas, such as dedicated equipment rooms and equipment closets, in accordance with Articles 110-16, 110-17, and 110-18 of the National Electrical Code, ANSI/NFPA 70.

General Site Guidelines

Efficient device operation requires proper site planning and maintenance. It also requires proper layout of the equipment, rack or cabinet, and wiring closet.

To plan and create an acceptable operating environment for your device and prevent environmentally caused equipment failures:

  • Keep the area around the chassis free from dust and conductive material, such as metal flakes.

  • Follow the prescribed airflow guidelines to ensure that the cooling system functions properly. Ensure that the exhaust from other equipment does not blow into the intake vents of the device.

  • 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.

  • Install the device in a secure area, so that only authorized personnel can access the device.

Site Electrical Wiring Guidelines

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

Warning:

You must provide a properly grounded and shielded environment and use electrical surge-suppression devices.

Avertissement Vous devez établir un environnement protégé et convenablement mis à la terre et utiliser des dispositifs de parasurtension.
Table 2: Site Electrical Wiring Guidelines

Site Wiring Factor

Guidelines

Signaling limitations

If your site experiences any of the following problems, consult experts in electrical surge suppression and shielding:

  • Radio frequency interference (RFI) because of improperly installed wires

  • Damage from lightning strikes occuring when wires exceed recommended distances or pass between buildings

  • Electromagnetic pulses (EMPs) caused by lightning damaging unshielded conductors and electronic devices

Radio frequency interference

To reduce or eliminate RFI from your site wiring, do the following:

  • Use a twisted-pair cable with a good distribution of grounding conductors.

  • To exceed the recommended distances, use a high-quality twisted-pair cable with one ground conductor for each data signal, when applicable.

Electromagnetic compatibility

If your site is susceptible to problems with electromagnetic compatibility (EMC), particularly from lightning or radio transmitters, seek expert advice.

Strong sources of electromagnetic interference (EMI) can cause:

  • Destruction of the signal drivers and receivers in the device.

  • Electrical hazards as a result of power surges conducted over the lines into the equipment.

Clearance Requirements for SRX5800 Firewall Airflow and Hardware Maintenance

When planning the installation site, you need to allow sufficient clearance around the rack (see Figure 1):

  • For the cooling system to function properly, the airflow around the chassis must be unrestricted.

  • A minimum of 3 in. (7.62 cm) clearance must be provided behind the power supplies for airflow.

  • For service personnel to remove and install hardware components, there must be adequate space at the front and back of the firewall. At least 24 in. (61 cm) is required both in front of and behind the firewall. NEBS GR-63 recommends that you allow at least 30 in. (76.2 cm) behind the firewall.

  • Airflow must always be from front to back with respect to the rack. If the device has side to rear airflow, then provisions must be made to ensure that fresh air from the front of the rack is supplied to the inlets, and exhaust exits the rear of the rack. The device must not interfere with the cooling of other systems in the rack. Fillers must be used as appropriate in the rack to ensure there is no recirculation of heated exhaust air back to the front of the rack. Care must also be taken around cables to ensure that there is no leakage of air in situations where recirculation might result.

Figure 1: Chassis Dimensions and Clearance Requirements for the FirewallChassis Dimensions and Clearance Requirements for the Firewall

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