1-2 Rac k I nst allat ion G uidew w w . d e l l . c o m | s u p p o r t . d e l l . c o m • Always load the rack from the bottom up, and load the heaviest item in the rack first.• Make sure that the rack is level and stable before extending a component from therack.• Use caution when pressing the component rail release latches and sliding a componentinto or out of a rack; the slide rails can pinch your fingers.• After a component is inserted into the rack, carefully extend the rail into a lockingposition, and then slide the component into the rack.• Do not overload the AC supply branch circuit that provides power to the rack.The total rack load should not exceed 80 percent of the branch circuit rating.• Ensure that proper airflow is provided to components in the rack.• Do not step on or stand on any system/component when servicing othersystems/components in a rack.Installation InstructionsThis installation guide provides instructions for trained service technicians installing one ormore systems in a rack cabinet. The RapidRails™ rack kit can be installed in all Dell™ rackcabinets, and the VersaRails™ rack kit can be installed in most industry-standard rackcabinets. The procedures for installing both RapidRails and VersaRails rack kits are similar.One rack kit is required for each system to be installed in the rack cabinet.CAUTION: Do not attempt to install rack kit components designed for anothersystem. Use only the rack kit for your system. Using the rack kit for anothersystem may result in damage to the system and personal injury to yourself and toothers.NOTE: If your system is a tower version, you must first convert the system to a rack versionusing a tower-to-rack conversion kit. Instructions for installing this kit are included in thisdocument.RapidRails Rack Kit ContentsThe RapidRails rack kit consists of one pair of RapidRails mounting rails (see Figure 1-1).