Reference Guide

8 Brocade 6520 Hardware Reference Manual
53-1002705-01
Installation and safety considerations
2
Environmental considerations
For successful installation and operation of the switch, ensure that the following environmental
requirements are met:
• At a minimum, adequate cooling requires that you install the switch with the intake side, as
indicated by the airflow direction of the fan assemblies, facing the cool-air aisle.
The chassisshow output indicates “Reverse” for non-port side intake and “Forward” for port
side intake.
• All equipment in the rack should force air in the same direction to avoid intake of exhaust air.
• Airflow requirements outlined in Table 5 must be met. Note that the requirements differ based
on the direction of the airflow.
• The ambient air temperature does not exceed 40°C (104°F) while the switch is operating.
Table 5 lists the acceptable environmental ranges for both operating and nonoperating (such as
during transportation or storage) conditions.
Rack considerations
For successful installation and operation of the switch in a rack, ensure the following rack
requirements are met:
• The rack must be a standard EIA rack.
• A rack space that is two rack units (2U) high; 8.90 cm (3.50 inches) high and 48.3 cm (19
inches) wide.
• There are three rack kit options that accommodate the Brocade 6520, a four-post fixed rack
kit, a two-post Telco rack kit, and a four-post sliding rail rack kit. See their respective
installation manuals for details.
TABLE 5 Environmental requirements
Condition Acceptable during operation Acceptable during non-operation
Ambient
temperature
0º to 40ºC (32º to 104ºF) -25º to 70ºC (-13º to 158ºF)
Humidity 10% to 85% RH non-condensing, at
40ºC (104ºF)
10% to 90% RH non-condensing, at 70ºC
(158ºF)
Altitude 0 to 3 km (9,842 feet) above sea level 0 to 12 km (39,370 feet) above sea level
Shock 20 G, 6 ms, half-sine wave 33 G, 11 ms, half-sine wave, 3/eg Axis
Vibration 0.5 G sine, 0.4 gms random, 5-500 Hz 2.0 G sine, 1.1 gms random, 5-500 Hz
Air flow Port side exhaust -
Maximum - 176.7 cmh (104 cfm)
Nominal - 52.7 cmh (31 cfm)
Port side intake -
Maximum - 185.2 cmh (109 cfm)
Nominal - 56.1 cmh (33 cfm)
N/A
Heat dissipation 1378.5 BTU/hr (no optics configuration)
1706.1 BTU/hr (fully populated port
configuration)
N/A