Cisco 5000 Series User Manual download pdf (Page 111)

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A-3

Cisco Nexus 5000 Series Hardware Installation Guide

OL-15902-01

Appendix A Cabinet and Rack Installation

Cable Management Guidelines

A perforated cabinet that conforms to these requirements is available from Rittal Corporation:

Rittal Corporation

One Rittal Place

Springfield, OH 45504

Contact: (800) 477–4220

Cabinet P/N: Rittal 9969427

Cabinet description: PS-DK/OEM Cabinet Assembly, (78.7 in.) 1998 mm X 23.6 in. (600 mm) X

39.4 in. (1000

mm) (H x W x D) (42 RU)

Requirements Specific to Solid-Walled Cabinets

A solid-walled cabinet is defined here as a cabinet with solid front and rear doors and solid side walls.

In addition to the requirements listed in the

“This section includes the following topics:” section on

page A-1, solid-walled cabinets must meet the following requirements:

• A roof-mounted fan tray and an air cooling scheme in which the fan tray pulls air in at the bottom

of the cabinet and exhausts it out the top, with a minimum of 500 cubic feet per minute of airflow

exiting the cabinet roof through the fan tray.

• Nonperforated (solid and sealed) front and back doors and side panels so that air travels predictably

from bottom to top.

• A recommended cabinet depth of 36 to 42 inches (91.4 to 106.7 cm) to allow the doors to close and

for adequate airflow.

• A minimum of 150 sq. inches (968 sq. cm) of open area at the floor air intake of the cabinet.

• The lowest piece of equipment should be installed a minimum of 1.75 inches (4.4 cm) above the

floor openings to prevent blocking the floor intake.

Requirements Specific to Standard Open Racks

In addition to the requirements listed in the “This section includes the following topics:” section on

page A-1, if mounting the chassis in an open rack (no side panels or doors), ensure that the rack meets

the following requirements:

• The minimum vertical rack space per chassis must be two RU (rack unit), equal to 3.47 inches (8.8

cm).

• The horizontal distance between the chassis and any adjacent chassis should be 6 inches (15.2 cm),

and the distance between the chassis air vents and any walls should be 2.5 inches (6.4

cm).

Cable Management Guidelines

To help with cable management, you might want to allow additional space in the rack above and below

the chassis to make it easier to route as many as 56 fiber or copper cables through the rack.

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Cisco 5000 Series User Manual Page 111