Cisco Systems MDS 9100, MDS 9500, MDS 9200 Ensuring Overcurrent Protection, Grounding the System

Site Preparation

Se n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a ck - d o c @ c i s c o . c o m

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).

Regulatory Compliance and Safety Information for the Cisco MDS 9000 Family

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