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3
Regulatory Compliance and Safety Information for the Cisco MDS 9000 Family
78-17429-05
Site Preparation
Ensuring Overcurrent Protection
The system relies on the protective devices in the building installation for protection against
short-circuit, overcurrent, and earth (grounding) fault. Ensure that the protective devices in the building
installation are properly rated to protect the system, and that they comply with national and local codes.
Grounding the System
Follow these guidelines when grounding the system:
• Do not defeat the ground conductor on an AC plug.
• Connect AC-powered systems to grounded power outlets.
• Connect the system to earth (ground) as described in the Cisco MDS 9100 Series Hardware
Installation Guide, the Cisco MDS 9200 Series Hardware Installation Guide and the Cisco MDS
9500 Series Hardware Installation Guide.
• Use a ground lug that is NRTL listed and compatible with copper conductors when grounding a
Cisco MDS 9124 Switch. Only copper conductors (wires) must be used and the copper conductor
must comply with the National Electric Code (NEC) for ampacity.
Creating a Safe Environment
Follow these guidelines to create a safe environment:
• Keep tools and chassis components off the floor and away from foot traffic.
• Clear the area of possible hazards, such as moist floors, ungrounded power extension cables, and
missing safety grounds.
• Keep the area around the chassis free from dust and foreign conductive material (such as metal
flakes from nearby construction activity).
Rack-Mounting the System
A rack-mount kit and cable guides come with the system. The kit is not suitable for racks with
obstructions (such as a power strip) that could impair access to system components. Allow sufficient
clearance around the rack for system maintenance.
If mounting the chassis in a rack or cabinet, ensure that the rack or cabinet meets the requirements listed
in the corresponding hardware installation guide.
Ensuring Proper Airflow
Follow these guidelines to ensure proper airflow:
• Maintain ambient airflow throughout the data center to ensure normal operation.
• If installing in an enclosed cabinet, ensure that the cabinet has adequate ventilation and allow at least
2.5 inches (6.4 cm) of clearance between the chassis vents and the cabinet wall.
• If placing the switch adjacent to a device that exhausts air towards the switch, the horizontal distance
between the devices should be a minimum of 6 inches (15.2 cm).