CHAPTER
1-43
Cisco MDS 9148S Multilayer Switch Hardware Installation Guide
OL-20185-01
1
Cabinet and Rack Installation
This appendix includes the following information:
• Cabinet and Rack Requirements, page 1-43
• Cisco MDS 9000 Family Telco and EIA Shelf Bracket, page 1-45
Cabinet and Rack Requirements
This section provides the Cisco MDS 9000 Family requirements for the following types of cabinets and
racks, assuming an external ambient air temperature range of 0 to 40°C:
• Standard perforated cabinets
• Solid-walled cabinets with a roof fan tray (bottom to top cooling)
• Standard open racks
• Telco racks
Note If you are selecting an enclosed cabinet, we recommend one of the thermally validated types listed
above: standard perforated or solid-walled with a fan tray.
General Requirements for Cabinets and Racks
The cabinet or rack must be one of the following rack types:
• Standard 19-in. four-post EIA cabinet or rack, with mounting rails that conform to English universal
hole spacing per section 1 of ANSI/EIA-310-D-1992. See the “Requirements Specific to Perforated
Cabinets” section on page 1-44 and “Requirements Specific to Solid-Walled Cabinets” section on
page 1-45.
• Standard two-post telco rack, with mounting rails that conform to English universal hole spacing per
section 1 of ANSI/EIA-310-D-1992. See the “Requirements Specific to Telco Racks” section on
page 1-45.
The cabinet or rack must also meet the following requirements:
• The minimum vertical rack space per chassis should be 1 RU (rack unit), equal to 1.75 in. (4.4 cm).
• The width between the rack-mounting rails must be at least 17.75 in. (45.1 cm). For four-post EIA
racks, this is the distance between the two front rails.
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