51 IntroductionWith the FUJITSU Server BS2000 SE Series (SE servers), FUJITSU offers a server infrastructure which consists oftwo server lines.Depending on requirements, an SE server contains all the system components needed for operation as an overallapplication:/390-based BS2000 Server Unitx86-based Server Units with BS2000 guest systems, SU300 also with Linux or Windows guest systems as anoptionx86-based Application Units for operating Native or hypervisor systems (e.g. Linux, Windows, VMware, OVM,etc.)Shareable tape and disk peripheryA high-speed, server-internal infrastructure to connect the components with each other and with the customerLAN or SAN.Information on the hardware lifecycle of the FUJITSU Server BS2000 SE Series (Changessince the last edition of the manual)With the hardware lifecycle of the SE Series, the hardware basis for the Server Unit x86, the Management Unit andthe HNC has been renewed several times. If the following generations are not identified by their own designations(e.g. SU300 -> SU300B -> SU310), the generations are identified by a subsequent Mx with x = 1,2,3,…: MU M2,MU M3, HNC M2, HNC M3 etc. The generation M2 is supported as of SE V6.2A, the generation M3 as of version6.3A04.The changes in the manuals are mainly due to these new hardware lifecycle generation models. Any differences tothe previous models regarding structure and operation are described in detail.Information on using the manualThe Operating Manual consists of a number of modules and describes the features and hardware components ofthe FUJITSU BS2000 servers of the SE series. Users should read the operating manuals carefully in order to obtainoptimal performance from the SE server.This manual describes the hardware component Server Unit x86 and complements the Basic Operating Manual [ ].1You will find a comprehensive introductory chapter in the Basic Operating Manual. The chapters "Important notes"on SE server operation and "Environmental protection and service" are contained only in the Basic OperatingManual.In the following, abbreviations are used to describe the SE server models and their components. These areexplained in the introduction to the Basic Operating Manual [ ] in the section "Models, Names, Abbreviations".1