1. Installing Internal Optional DevicesExpress5800/R120g-2E User's Guide84Chapter 2 Preparations1.13.1 InstallationFollow the steps below to install the fan unit.1. See steps 1 to 7 in Chapter 2 (1.3 Overview of Installation and Removal) for preparations.2. Locate the slots to install an additional (redundant) fan unit.16x 2.5-inch Drive Model: Install redundant fan units to slots FAN 2F to 5F.26x 2.5-inch Drive Model /3.5-inch Drive Model: Install redundant fan units to slots FAN 1F to 5F.3. Insert fan unit straight into the slot foradditional fan unit.When the fan unit is inserted to the end, it islocked with clicking sound.1.13.2 Replacement / RemovalTo remove redundant fan unit, reverse the installation procedure.The fan units are hot-swappable even while the system is powered-on and running.You can identify the failing fan unit by using the management tool such as EXPRESSSCOPE Engine 3.While the system is powered-on or running, the LED of failed fan unit is lit.CAUTIONBe sure to observe the following precautions to use the server safely. Failure toobserve the precautions may cause burns, injury, and property damage. Fordetails, see Safety Precautions and Regulatory Notices.• Pay attention to electric hazard.
