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Site Planning 2-9
Site Environment
If the room temperature exceeds 104°F (40°C), the air temperature inside the chassis could
overheat the unit. Any of the following can inhibit airflow and cause overheating:
• The wiring closet or rack in which the chassis is mounted is not properly ventilated.
• The exhaust of one device is placed so it enters the air intake vent of the chassis.
• The chassis is the top unit in an unventilated rack.
Multiple chassis can be rack-mounted with no clearance above and below the chassis.
When mounting a chassis in a rack with other equipment or when placing a chassis on the
floor adjacent to other equipment, ensure that the exhaust from other equipment does not
blow into the intake vent (lower front panel) of the chassis.
Table 2-2 lists the operating and nonoperating environmental site requirements. To
maintain normal operation and ensure high system availability, maintain an ambient
temperature at your site. The chassis operates in the ranges listed in Table 2-2; however, a
measurement that is approaching the minimum or maximum of a range indicates a potential
problem. You can maintain normal operation by anticipating and correcting environmental
anomalies before they exceed the maximum operating range.