1. Installing Internal Optional DevicesExpress5800/GT110d-S User’s Guide60Chapter 2 Preparations1.9 Extra Battery for RAID ControllerIf a RAID Controller (N8103-128/129/130/134) is installed, use the optional extra battery to avoid data losscaused by accidents including temporary blackout during a write-back operation. The model of the extrabattery to be used depends on RAID Controller.• For N8103-129/130, use N8103-121 extra battery• For N8103-128/134, use N8103-141 extra battery1.9.1 Handling precautionsBelow are the precautions to be observed whenever using the backup battery. Be sure to observe thefollowing, otherwise property such as data or other devices might be destroyed.• Use the extra battery that supports the RAID Controller used.• The extra battery is a very delicate electronic device. Before installation, touch the metal frame part ofthe server to discharge the static electricity from your body.• Do not drop or bump the backup battery.• For recycling and disposing the backup battery, refer to the user’s guide that comes with it.1.9.2 Installing N8103-121 extra batteryInstall an extra battery in the server by using the following procedure.Note Read through the user’s guide supplied with the RAID Controller beforeinstallation.Fill out the date on the labelFill out the date on the label. Fill out the installation date on the setup date label supplied with theextra battery and attach it to the battery case.Ex.Write the date.Example: Y 2007. M 12