Under no circumstances should you stack more than one chassis on top of one another. This disrupts
cooling air flow to the ASAs and causes damage to the hardware.
Warning
See Hardware Specifications, on page 13 for information about physical specifications.
When planning the site layout and equipment locations, consider the information in the next section to help
avoid equipment failures and reduce the possibility of environmentally caused shutdowns. If you are currently
experiencing shutdowns or unusually high error rates with your existing equipment, these considerations may
help you isolate the cause of failures and prevent future problems.
Site Considerations
Considering the following helps you plan an acceptable operating environment for the chassis, and avoid
environmentally caused equipment failures.
•
Electrical equipment generates heat. Ambient air temperature might not be adequate to cool equipment
to acceptable operating temperatures without adequate circulation. Ensure that the room in which you
operate your system has adequate air circulation.
•
Ensure that the chassis cover is secure. The chassis is designed to allow cooling air to flow effectively
within it. An open chassis allows air leaks, which may interrupt and redirect the flow of cooling air from
the internal components.
•
Always follow the ESD-prevention procedures described previously to avoid damage to equipment.
Damage from static discharge can cause immediate or intermittent equipment failure.
Power Supply Considerations
When installing the chassis, consider the following:
• Check the power at the site before installing the chassis to ensure that it is “clean” (free of spikes and
noise). Install a power conditioner, if necessary, to ensure proper voltages and power levels in the
appliance input voltage.
•
Install proper grounding for the site to avoid damage from lightning and power surges.
•
The chassis does not have a user-selectable operating range. Refer to the label on the chassis for the
correct appliance input-power requirement.
•
Install an uninterruptible power source for your site, if possible.
Equipment Rack Configuration Considerations
Consider the following when planning an equipment-rack configuration:
•
If you are mounting a chassis in an open rack, make sure that the rack frame does not block the intake
or exhaust ports.
Cisco ASA 5506-X, ASA 5506W-X, and ASA 5506H-X Hardware Installation Guide
Online Only 27
Installation Preparation
Site Considerations
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