Cisco MDS 9000 Series Hardware Installation Manual page 21

Cabinet and Rack Installation
• 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 sends it out from the top, with a minimum airflow of 849.5 m
through the fan tray, to be available.
• Nonperforated (solid and sealed) front and back doors and side panels to be present so that air travels
predictably from bottom to top.
• The overall cabinet depth to be 36 to 42 in. (91.4 to 106.7 cm) to allow the doors to close and to facilitate
adequate airflow.
• A minimum of 150 sq. in. (968 sq. cm) of open area to be available at the floor air intake of the cabinet.
• The lowest piece of equipment to be installed at a minimum of 1 RU (1.75 in. or 4.4 cm) above the floor
openings to prevent blockage of the floor intake.
Requirements Specific to Solid-Walled Cabinets
Cisco MDS 9124V-K9 Switch Hardware Installation Guide
3
/h exiting the cabinet roof
15