6 Installing and Replacing Components Other than Network Interface Cards54 Nokia IP290 Security Platform Installation GuideBefore You BeginCautionHard-disk drives are susceptible to damage from shock. Handle them with care.CautionTo help guard against electrostatic discharge damage, make sure you are properlygrounded by using a grounding wrist strap and following the instructions provided withthe wrist strap before you handle the components or open the appliance. If you do nothave a grounding wrist strap, make sure you are properly grounded before you touchany electronic component.To install or replace a hard-disk drive, you need: Physical access to the appliance Nokia hard-disk drive kit A Phillips-head screwdriverThe following procedure requires removing the chassis tray assembly from the chassis.CautionMake sure you perform an orderly shut down of the system before attempting toremove the chassis tray assembly.You must replace the hard-disk drive with a drive that has a capacity equal to or larger than thedrive you are replacing. Back up your hard-disk drive files to a remote system on a regular basis.To remove or replace a hard-disk driveCautionIf you fail to use the following procedure when you remove the hard-disk drive, the drivemight become damaged or you might lose data.1. Use Nokia Network Voyager or the command-line interface (CLI) to perform an orderlyshutdown of the IP290 appliance.For information about how to access Network Voyager and the related reference materials,see “Using Nokia Network Voyager” on page 36.2. Turn off the power to the IP290 appliance.3. Remove the power cord.