Chapter 1. The System x3850 X5 and x3950 X5 serverThis Installation and User's Guide contains instructions for setting up your IBMSystem x3850 X5 and x3950 X5 Types 7145 and 7146 server, installing optionaldevices, and for starting and configuring the server. For diagnostic andtroubleshooting information and instructions for removing and installing servercomponents, see the Problem Determination and Service Guide that is on the IBMDocumentation CD.The IBM System x3850 X5 and x3950 X5 server is a 4U 1-high, high-performanceserver. It can be upgraded to a symmetric multiprocessing (SMP) server through amicroprocessor upgrade. It is ideally suited for networking environments that requiresuperior microprocessor performance, efficient memory management, flexibility, andlarge amounts of reliable data storage.Performance, ease of use, reliability, and expansion capabilities were keyconsiderations in the design of the server. These design features make it possiblefor you to customize the system hardware to meet your needs today and provideflexible expansion capabilities for the future.The server comes with a limited warranty. For information about the terms of thewarranty and getting service and assistance, see the Warranty Informationdocument that comes with the server.The server contains IBM Enterprise X-Architecture technologies, which helpincrease performance, reliability, and availability. For more information, see “Whatyour server offers” on page 7 and “Reliability, availability, and serviceability” on page9.You can obtain up-to-date information about the server and other IBM ® serverproducts at http://www.ibm.com/systems/x/. At http://www.ibm.com/support/mysupport/, you can create a personalized support page by identifying IBMproducts that are of interest to you. From this personalized page, you can subscribeto weekly e-mail notifications about new technical documents, search for informationand downloads, and access various administrative services.If you participate in the IBM client reference program, you can share informationabout your use of technology, best practices, and innovative solutions; build aprofessional network; and gain visibility for your business. For more informationabout the IBM client reference program, see http://www.ibm.com/ibm/clientreference/.If firmware and documentation updates are available, you can download them fromthe IBM Web site. The server might have features that are not described in thedocumentation that comes with the server, and the documentation might be updatedoccasionally to include information about those features, or technical updates mightbe available to provide additional information that is not included in the serverdocumentation. To check for updates, complete the following steps.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. 2010 1