Cisco 3310 Mobility Services Engine, Руководство по началу работы

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Cisco 3310 Mobility Services Engine Getting Started Guide
OL-17304-02
Chapter 2 Preparing for Installation
Choosing a Physical Location for the Mobility Services Engine
•
Do not overload the power outlet when installing multiple devices in the rack.
• Do not place any object weighing more than 110 lb (50 kg) on top of rack-mounted devices.
Choosing a Physical Location for the Mobility Services Engine
For maximum safety and reliability, mount the mobility services engine using the following guidelines.
Space and Airflow Requirements
Install the mobility services engine in an EIA-standard rack. One rack unit is required for each mobility
services engine.
Ensure that the mobility services engine and all cables can reach appropriate connection points.
•
The mobility services engine must be located within 328 ft (100 m) of any equipment connected to
the 10/100/1000BASE-T ports.
• The power cord must be able to reach a 110 or 220 VAC grounded electrical outlet.
Ensure that there is sufficient room at the back of the mobility services engine for all cables and
connectors.
• Leave a minimum clearance of 25 in. (63.5 cm) in front of the rack.
•
Leave a minimum clearance of 30 in. (76.2 cm) behind the rack.
• Leave a minimum clearance of 48 in. (121.9 cm) from the back of the rack to the back of another
rack or row of racks.
Caution
To prevent Inadequate cooling and damage to the equipment, do not block the ventilation openings.
Caution
Always use blanking panels to fill empty vertical spaces in the rack. This arrangement ensures proper
airflow. Using a rack without blanking panels can lead to thermal damage.
Caution
When selecting a rack to use, observe the following additional requirements to ensure adequate airflow
and to prevent damage to the equipment: (1) Front and rear doors—If the rack includes closing front and
rear doors, you must allow 5,350 sq. cm (830 sq. in.) of holes evenly distributed from top to bottom to
permit adequate airflow (equivalent to the required 64 percent open area for ventilation). (2) Side—The
clearance between the installed rack component and the side panels of the rack must be a minimum of
2.75 in. (7 cm).