Rack Installation Guide 1-7Four-Post Rack InstallationBefore attempting this installation, you should read through this entire procedure carefully.Before You BeginBefore you begin installing your system in the rack, carefully read the safety instructions found atthe beginning of this guide, as well as the safety instructions found in your system’s ProductInformation Guide for additional information.CAUTION: When installing multiple systems in a rack, complete all of the procedures for the currentsystem before attempting to install the next system.CAUTION: Rack cabinets can be extremely heavy and move easily on the casters. The cabinet has nobrakes. Use extreme caution while moving the rack cabinet. Retract the leveling feet when relocatingthe rack cabinet. Avoid long or steep inclines or ramps where loss of cabinet control may occur. Extendthe leveling feet for support and to prevent the cabinet from rolling.Important Safety InformationObserve the safety precautions in the following subsections when installing your system in the rack.CAUTION: You must strictly follow the procedures in this document to protect yourself as well asothers who may be involved. Your system may be very large and heavy, and proper preparation andplanning are important to prevent injury to yourself and to others. This becomes increasingly importantwhen systems are installed high up in the rack.Rack Stabilizer FeetCAUTION: Installing systems in a rack without the front and side stabilizer feet installed could causethe rack to tip over, potentially resulting in bodily injury under certain circumstances. Therefore,always install the stabilizer feet before installing components in the rack.CAUTION: After installing systems in a rack, never pull more than one system out of the rack on itsslide assemblies at one time. The weight of more than one extended system could cause the rack to tipover and cause injury.The stabilizer feet help prevent the rack from tipping over when a system or other component ispulled out of the rack with the slide assemblies fully extended. Refer to the documentationprovided with the rack cabinet for instructions on installing and anchoring the stabilizer feet.Recommended Tools and SuppliesYou may need the following tools and supplies to install the system in a four-post rack:• A #2 Phillips screwdriver (for installing VersaRails slide assemblies)• Masking tape or a felt-tip pen, for use in marking the mounting holes to be used