Cisco Systems MDS 9100 Series manual Cisco MDS 9000 Family Telco and EIA Shelf Bracket

Appendix A Cabinet and Rack Installation

Cisco MDS 9000 Family Telco and EIA Shelf Bracket

Requirements Specific to Solid-Walled Cabinets

In addition to the requirements listed in the “General Requirements for Cabinets and Racks” 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 cfm 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.

•The overall cabinet depth should be 36 to 42 in. (91.4 to 106.7 cm) to allow the doors to close and adequate airflow.

•A minimum of 150 sq. in. (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 in. (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 “General Requirements for Cabinets and Racks” 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:

•Width between two front mounting rails: minimum of 17.75 in. (45.1 cm)

•Minimum vertical rack space per chassis: 1 rack unit (RU), equal to 1.75 in. (4.4 cm)

•The distance between the outside face of the front mounting rail and the outside face of the back mounting rail should be 23.5 to 34.0 in. (59.7 to 86.4 cm) to allow for rear bracket installation.

•The distance between the chassis air vents and any walls should be 2.5 in. (6.4 cm).

Requirements Specific to Telco Racks

In addition to the requirements listed in the “General Requirements for Cabinets and Racks” section on page A-1, telco racks should meet the following requirements:

•The width of the rack between the two rack-mounting rails should be at least 17.75 in. (45.1 cm).

•The distance between the chassis air vents and any walls should be 2.5 in. (6.4 cm).

Cisco MDS 9000 Family Telco and EIA Shelf Bracket

The optional telco and EIA Shelf Bracket Kit (part number DS-SHELF=) can temporarily or permanently support the Cisco MDS 9100 Series during installation. Once the front rack-mount brackets are securely attached to the rack-mounting rails, the shelf bracket can be removed.

This kit supports the following configurations:

•A Cisco MDS 9100 Series switch in a two-post telco rack

•A Cisco MDS 9100 Series switch in a four-post EIA rack

Cisco MDS 9100 Series Hardware Installation Guide

OL-16187-01 A-3