1. Installing Internal Optional DevicesExpress5800/R120g-2E User's Guide 79Chapter 2 Preparations1.12 Flash Backup Unit for RAID ControllerIf a RAID controller (N8103-176/177/178/179) is installed, use the flash backup unit (FBU) to avoid data losscaused by accidents including temporary blackout during a Write Back operation. The model of the flash backupunit to be used depends on RAID controller.• For N8103-176/177/178, use N8103-181 Flash Backup Unit• For N8103-179, use FBU provided with N8103-179.FBU is installed on the support bar of this server. The installation location and order of FBU are as shown in thefollowing figure.1.12.1 Handling precautionsObserve the followings when using FBU. Ignoring these precautions may cause damage to your data or otherdevices.• Use the FBU appropriate to the RAID controller to be used.• The FBU is an electronic device sensitive to static electricity. Before installation, touch the metal frame partof the server to discharge the static electricity from your body.• Do not drop or bump the FBU.• For recycling and disposing of the FBU, refer to the User’s Guide that comes with the RAID controller orFlash Backup Unit.1.12.2 InstallationThis section describes the procedure of installing a Flash Backup Unit (FBU) for RAID controller.1. See steps 1 to 8 in Chapter 2 (1.3 Overview of Installation and Removal) for preparations.FBU#2FBU#3FBU#4rear sideFBU#1
