Chapter 1. IntroductionThis document contains general installation instructions for the Lenovo 42U Enterprise Rack and Lenovo 42UEnterprise Expansion Rack cabinets. Always read the documentation that comes with your server or optionaldevice for detailed installation instructions.Installing the rack cabinet consists of the following tasks:1. Unpack the rack according to the Unpacking Instructions document that comes with the rack cabinet.2. Locate the rack according to the Lenovo eServer xSeries Rack Planning Guide.3. Install rack stabilizer brackets on all racks.4. Prepare the rack for optional devices:• Remove the side covers, if applicable.• Remove the front and rear doors from all racks, if necessary.• Attach expansion racks to a standard rack or to each other to form suites.5. Install one or more optional devices.Note: Install the heaviest devices in the bottom of the rack cabinet.6. Complete the rack cabinet installation:• Reinstall side covers on all racks or on the outermost racks in a suite.• Reinstall front and rear doors on all racks cabinets.If documentation updates are available, you can download them from the Lenovo website. The rack cabinetmight have features that are not described in the documentation that comes with the rack, and thedocumentation might be updated occasionally to include information about those features, or technicalupdates might be available to provide additional information that is not included in the rack documentation.Changes are made periodically to the website.The Lenovo Documentation CDThe Lenovo Documentation CD contains documentation for the rack cabinet in Portable Document Format(PDF) and includes the Lenovo Documentation Browser to help you find information quickly.Hardware and software requirementsThe Documentation CD requires the following minimum hardware and software:• MicrosoftWindows XP, Windows 2000, or Red Hat Linux• 100 MHz microprocessor• 32 MB of RAM• Adobe Acrobat Reader 3.0 (or later) or xpdf, which comes with Linux operating systemsUsing the Documentation BrowserUse the Documentation Browser to browse the contents of the CD, read brief descriptions of the documents,and view documents, using Adobe Acrobat Reader or xpdf. The Documentation Browser automaticallydetects the regional settings in your computer and displays the documents in the language for that region (if© Copyright Lenovo 2001, 2010 1