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B-1
Cisco Wide Area Virtualization Engine 274 and 474 Hardware Installation Guide
OL-17739-01
APPENDIX
B
Maintaining the Wide Area
Virtualization Engine
Proper use of preventive maintenance procedures can keep the Wide Area
Virtualization Engine (WAVE) in good operating condition and minimize the need
for costly, time-consuming service procedures. This chapter contains
maintenance procedures that you should perform regularly.
This chapter covers the tasks required for maintaining a WAVE appliance or a
WAVE f ar m:
• Maintaining Your Site Environment, page B-1
• Using Power Protection Devices, page B-7
Maintaining Your Site Environment
An exhaust fan in the power supply cools the power supply and system by drawing
air in through various openings in the system and blowing it out the back.
However, the fan also draws dust and other particles into the system, causing
contaminant buildup, which results in an increase in the system’s internal
temperature and interferes with the operation of various system components.
To avoid these conditions, we recommend keeping your work environment clean
to reduce the amount of dust and dirt around the system, thereby reducing the
amount of contaminants drawn into the system by the power supply fan.
This section discusses various environmental factors that can adversely affect
system performance and longevity.