Installation guide

Environmental requirements (Continued)TABLE 14
Condition Acceptable during operation Acceptable during non-operation
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
Airflow Maximum - 90.1 cmh (53 cfm)Nominal - 59.5
cmh (35 cfm)
N/A
Heat dissipation 478 BTU/hr N/A
Operating noise 46.7 dB N/A
Cooling system and fans
The fans cool the CPU, main memory, and voltage regulators. For Brocade ICX 6650 switches, the
fans use either:
• An exhaust airflow which moves air from front to back. Refer to the first figure below. Devices with
exhaust airflow are labeled with a green arrow with an “E.”
• An intake airflow which moves air from back to front. Refer to the third figure below. Devices with
intake airflow are labeled with an orange arrow with an “I.”
CAUTION
Ensure that the airflow direction of the power supply unit matches that of the installed fan tray.
The power supplies and fan trays are clearly labeled with either a green arrow with an "E", or
an orange arrow with an "I."
Cooling system and fans
68 Brocade ICX 6650 Hardware Installation Guide
53-1003398-01