Cisco NAC-3310, Руководство по установке

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2-15
Cisco NAC Appliance Hardware Installation Guide
OL-20326-01
Chapter 2 Preparing for Installation
Rack-Mounting Your Cisco NAC Appliance CAM/CAS
•
Because you may install more than one appliance in the rack, ensure that the weight of all the
appliances installed does not make the rack unstable.
Caution Some equipment racks are also secured to ceiling brackets due to the weight of the equipment in the rack.
If you use this type of installation, make sure that the rack you are using to install the appliances is
secured to the building structure.
• As mentioned in Airflow Guidelines, page 2-9 , maintain a 6-inch (15.2-cm) clearance at the front
and rear of the appliance to ensure adequate air intake and exhaust.
•
Avoid installing appliances in an overly congested rack. Air flowing to or from other appliances in
the rack might interfere with the normal flow of cooling air through the appliances, increasing the
potential for overtemperature conditions within the appliances.
• Allow at least 24 inches (61 cm) of clearance at the front and rear of the rack for
appliance maintenance.
Caution
To prevent appliance overheating, never install an appliance in an enclosed rack or a room that is not
properly ventilated or air conditioned.
•
Follow your local practices for cable management. Ensure that cables to and from appliances do not
impede access for performing equipment maintenance or upgrades.
Note
The rack-mount hardware kit does not include a two-post equipment rack.
Mounting the NAC-3315 Appliance in a 4-Post Rack
Warning
When the appliance is installed in a rack and is fully extended on its slide rail, it is possible for the
rack to become unstable and tip over, which could cause serious injury. To eliminate the risk of rack
instability from extending the rail or in the event of an earthquake, you should affix the rack to
the floor.
This section contains:
• NAC-3315 4-Post Rack-Mount Hardware Kit, page 2-15
•
Installing the NAC-3315 Slide Rails into a Rack, page 2-16
• Installing the NAC-3315 Appliance into the Slide Rails, page 2-19
NAC-3315 4-Post Rack-Mount Hardware Kit
Figure 2-3 shows the items that you need to install the NAC-3315 appliance in a four-post rack.