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Chapter 5 Maintaining Your GSS
Maintaining Your Site Environment
5-6
Cisco Global Site Selector 4491 Hardware Installation Guide
78-16356-01
Magnetism
Because they store data magnetically, hard disk drives are extremely susceptible
to the effects of magnetism. D not store hard disk drives near magnetic sources
such as:
• Monitors
• TV sets
• Printers
• Telephones with real bells
• Fluorescent lights
Power Source Interruptions
The GSS is especially sensitive to variations in voltage supplied by the AC power
source. Overvoltage, undervoltage, and transients (or spikes) can erase data from
memory or even cause components to fail. To protect against these types of
problems, always properly ground power cables. Use one or both of the following
methods:
• Use one of the power protection devices described in the “Using Power
Protection Devices” section.
• Place the GSS on a dedicated power circuit (rather than sharing a circuit with
other heavy electrical equipment). In general, do not allow the GSS to share
a circuit with any of the following equipment:
–
Copier machines
–
Air conditioners
–
Vacuum cleaners
–
Space heaters
–
Power tools
–
Teletype machines