Rack and Cabinet Requirements
This section provides the requirements for the following type of racks, assuming an external ambient air
temperature range of 32°F to 104°F (0 to 40°C):
General Requirements for Open Four-Post Racks
The rack must be a standard 19-inch four-post EIA rack, with mounting rails that conform to English universal
hole spacing per section 1 of ANSI/EIA-310-D-1992. See the Clearance Requirements for Cisco MDS 9700
Series Directors, on page 68 section.
General Rack and Cabinet Requirements for Cisco MDS 9700 Series Directors
You can install the following types of racks or cabinets for your switch:
• Standard perforated-doors cabinets
• Solid-walled cabinets with a roof fan module (bottom to top cooling)
• Standard open four-post Telco racks
• Standard open two post Telco racks
Cisco MDS 9700 Series Directors are compatible with Cisco racks (such as Cisco R42612) and PDUs.
Note
Use a standard 19 inch, four post Electronic Industries Alliance (EIA) cabinet or rack with mounting rails
that conform to English universal hole spacing per section 1 of the ANSI/EIA-310-D-1992 standard.
The depth of a four post rack or a cabinet must be 24 to 32 inches (61.0 to 81.3 cm) between the front and
rear mounting vertical rails.
Ensure that the airflow and cooling are adequate and there is sufficient clearance around the air vents on the
switch, as described in
The rack must have sufficient vertical clearance for the chassis and any desired clearance for the installation
process. The shelf brackets are 2 RU, and they are built and installed so that they do not add up to the total
chassis vertical clearance of 14 RU.
The front and rear doors of enclosed racks must have at least 60% open area perforation pattern.
Additionally, you must consider the following site requirements for the rack:
• Power receptacles must be located within reach of the power cords used with the switch.
AC power supplies
• Power cords for 3-kW AC power supplies are 8 to 12 feet (2.5 to 4.3 m) long.
DC power supplies
• Power cords for 3.0-kW DC power supplies are supplied and dimensioned by the customer.
HVAC/HVDC power supplies
Cisco MDS 9700 Series Switches Hardware Installation Guide
66
Preparing the Site
Rack and Cabinet Requirements
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