Preventing Electrostatic Discharge Damage - Cisco UCS E-Series Installation Manual

Recommended Safety Practices for Installing Cisco UCS E-Series Servers
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Preventing Electrostatic Discharge Damage

Electrostatic discharge can damage equipment and impair electrical circuitry. Electrostatic discharge
occurs when electronic printed circuit cards, such as those used in Cisco service modules and network
modules, are improperly handled and can result in complete or intermittent equipment failure. Always
observe the following electrostatic discharge damage (ESD) prevention procedures when installing,
removing, and replacing the E-Series Servers:
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The wrist strap and clip must be used correctly to ensure proper ESD protection. Periodically confirm
Caution
that the resistance value of the ESD-preventive wrist strap is between 1 and 10 megohms (Mohm).
General Guidelines for Installing the E-Series Servers on a Rack
Excessive vibration can result in the loss of data and disk drive failure. The E-Series Server with hard
disk drives should not be installed in a rack cabinet where it might be exposed to excessive high
vibration. Before you install the router and E-Series Server in the rack cabinet, review the following
recommendations:
The E-Series Server with solid state drives can withstand higher vibration levels.
Note
Hardware Installation Guide for Cisco UCS E-Series Servers
16
Disconnect all power sources before doing the following:
Installing or removing a router chassis
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Working near power supplies
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Do not work alone if potentially hazardous conditions exist.
Always check that power is disconnected from a circuit.
Remove possible hazards from your work area, such as damp floors, ungrounded power extension
cables, or missing safety grounds.
If an electrical accident occurs, proceed as follows:
Use caution; do not become a victim yourself.
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Turn off power to the room using the emergency power-off switch.
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If possible, send another person to get medical aid. Otherwise, determine the condition of the
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victim and then call for help.
Determine if the person needs rescue breathing or external cardiac compressions; then take
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appropriate action.
Make sure that the router chassis is electrically connected to earth ground.
Wear an ESD-preventive wrist strap, and make sure that it makes good contact with your skin.
Connect the wrist strap clip to an unpainted portion of the chassis frame to channel unwanted ESD
voltages to ground.
If no wrist strap is available, ground yourself by touching the metal part of the router chassis.
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