Chapter 1. The System x3400 serverThe IBM ® System x3400 Types 7973, 7974, 7975, and 7976 is a 5-U-high,high-performance server that is based on IBM X-Architecture ® technologies. It isideally suited for networking environments that require superior microprocessorperformance, improved systems management, and flexible memory and datamanagement.The server comes with a limited warranty. For information about the terms of thewarranty and getting service and assistance, see the Warranty and SupportInformation document.The server contains IBM Enterprise X-Architecture technologies, which helpincrease performance, reliability, and availability. For more information, see “Whatyour server offers” on page 6 and “Reliability, availability, and serviceability” on page7.You can obtain up-to-date information about the server and other IBM serverproducts at http://www.ibm.com/eserver/xseries/.Related documentationThis User’s Guide provides general information about the server, including how toinstall supported options and how to configure the server. The followingdocumentation also comes with the server:v Installation GuideThis printed document contains instructions for setting up the server and basicinstructions for installing some options.v Warranty and Support InformationThis document is in Portable Document Format (PDF) on the IBM System x3400Documentation CD. It contains information about the terms of the warranty andgetting service and assistance.v Safety InformationThis document is in PDF on the IBM System x3400 Documentation CD. Itcontains translated caution and danger statements. Each caution and dangerstatement that appears in the documentation has a number that you can use tolocate the corresponding statement in your language in the Safety Informationdocument.v Problem Determination and Service GuideThis document is in PDF on the IBM System x3400 Documentation CD. Itcontains information to help you solve problems yourself, and it containsinformation for service technicians.Depending on the server model, additional documentation might be included on theIBM System x3400 Documentation CD.The xSeries and System x ™ Tools Center is an online information center thatcontains information about tools for updating, managing, and deploying firmware,device drivers, and operating systems. The xSeries Tools Center is athttp://publib.boulder.ibm.com/infocenter/toolsctr/v1r0/index.jsp.1. Racks are measured in vertical increments of 4.45 cm (1.75 inches) each. Each increment is called a ″U.″ A 1-U-high device is1.75 inches tall.© Copyright IBM Corp. 2008 1