Cisco MDS 9100 Series Hardware Installation Guide (OL-17951-02, February 2009)

Send documentation comments to [e-mail]
A-2
Cisco MDS 9100 Series Hardware Installation Guide
OL-17951-02
Appendix A Cabinet and Rack Installation
Cabinet and Rack Requirements
• For four-post EIA cabinets (perforated or solid-walled):
– The minimum spacing for bend radius for fiber-optic cables should have the front mounting rails
of the cabinet offset from the front door by a minimum of 3 in. (7.6 cm), and a minimum of 5 in.
(12.7 cm) if cable management brackets are installed on the front of the chassis.
– 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.
– There should be a minimum of 2.5 in. (6.4 cm) of clear space between the side edge of the
chassis and the side wall of the cabinet. No sizeable flow obstructions should be immediately
in the way of the chassis air intake or exhaust vents.
Note Optional jumper power cords are available for use in a cabinet. See the “Jumper Power Cord” section on
page C-5.
Requirements Specific to Perforated Cabinets
In addition to the requirements listed in the “General Requirements for Cabinets and Racks” section on
page A-1, perforated cabinets must meet the following requirements:
• The front and rear doors must have at least a 60 percent open area perforation pattern, with at least
15 sq. in. of open area per rack unit of door height.
• We recommend that the roof be perforated with at least 20 percent open area, unless the cabinet only
contains Cisco MDS 9100 Series switches, in which case the roof does not have to be perforated.
• We recommend an open or perforated cabinet floor to enhance cooling but it is not required.
Reference Perforated Cabinet
A perforated cabinet that conforms to the above requirements is available from Rittal Corporation:
Rittal Corporation
One Rittal Place
Springfield, OH 45504
Phone: [phone]
Cabinet P/N: Rittal 9969427
Cabinet description: PS-DK/OEM Cabinet Assembly, 1998 x 600 x 1000 (H x W x D) (42U)