IBM z/OS manual Z990 Support for Linux, Linux on zSeries, IBM Middleware

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z990 Support for Linux

Linux on zSeries

Linux and zSeries are a great team. Linux has the same appearance and application programming interfaces no matter what platform it is running on, since it is designed to be platform-independent. When Linux is run on a zSeries server it can inherit the legendary qualities of service that businesses worldwide rely on for hosting their most impor- tant workloads. Linux is open standards-based, supporting rapid application portability and can be adapted to suit changing business needs. The fl exibility and openness of Linux make it very popular with developers, whose contri- butions endow Linux with an extensive and diverse appli- cation portfolio. zSeries servers enable massive scalability within a single server, either horizontally or vertically. Hun- dreds of Linux images can run simultaneously, providing server consolidation capabilities while helping to reduce both cost and complexity.

Of course, no matter which Linux applications are brought to the zSeries platform, they can all benefi t from high- speed access to the applications and corporate data that reside on zSeries.

IBM developed the code that enables Linux to run on zSeries servers, and made it available to the Open Source community. The term used to describe this enabling code is “patches.”

To eliminate the need for an external 2074 Console control- ler and associated consoles, an administrator may utilize the Hardware Management Console (HMC) functions "Inte- grated 3270 Console Support" for operating z/VM images, and "Integrated ASCII Console Support" to operate Linux images.

The support is implemented using an internal communi- cations method — SCLP — which enables the operat- ing system to communicate with the HMC. The software support was made available in z/VM Version 4 Release 4. An update for Linux will be made available to IBM Linux Distribution Partners.

Linux on zSeries supports the 64-bit architecture avail- able on zSeries processors. This architecture eliminates the existing main storage limitation of 2 GB. Linux on zSeries provides full exploitation of the architecture in both real and virtual modes. Linux on zSeries is based on the Linux 2.4 kernel. Linux on S/390 is also able to execute on zSeries and S/390 in 32-bit mode:

IBM Middleware

•Connectors

–DB2 Connect™ Version 8.1

–DB2 Connect Enterprise Edition Version 7.2

–DB2 Connect Unlimited Edition Version 7.2

–CICS Transaction Gateway Version 5.0

–IMS Connect Version 1.1 and 1.2

•WebSphere Family

–WebSphere Application Server Version 5.0

–WebSphere Application Server for Developers Version 5.0

–WebSphere Application Server Network Deployment Version 5.0

–WebSphere Application Server Advanced Edition 4.0

–WebSphere Application Server Advanced Single Server Edition Version 4.0

–WebSphere Application Server Advanced Developer Edition Version 4.0

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Contents IBM zSeries 990 and z/OS Reference Guide Table of Contents ZSeries Overview What does an on demand company look like?To huge increases in user activity Tools for Managing e-businessArchitecture Architecture Operating System SupportIBM zSeries TionBase Ratio Z990 Design and Technology MultiChip Module is the technology cornerstone for Z990 Models Z990 Family ModelsZ990 and IBM On/Off Capacity on Demand Model Upgrades Z990 and z900 Performance Comparison Z990 I/O SubSystem Z990 Cage LayoutGreater than 15 Logical Partitions LP Physical Channel IDs PCHIDs SubSystemIC Channel Spanning Z990 Channels and I/O ConnectivityLogical Channel SubSystem Lcss Spanning Up to 1024 Escon ChannelsIntegrated Cluster Bus-3 ICB-3 InterSystem Channel-3 ISC-3Integrated Cluster Bus-2 ICB-2 Integrated Cluster Bus-4 ICB-4Performance Ficon Express Channel Card FeaturesFibre Channel Connectivity Flexibility Three channel types supportedShared infrastructure Native Ficon ChannelsFicon CTC function Ficon ConnectivityFicon Support for Cascaded Directors Ficon Bridge Channel FCP ChannelsOpen Systems Adapter-Express Features OSA-Express FCP Full fabric connectivityZ990 OSA-Express 1000BASE-T Ethernet OSA-Express Integrated Console ControllerQueued Direct Input/Output Qdio Z990 OSA-Express Gigabit EthernetZ990 OSA-Express Token-Ring NON-QDIO operational modeServer to User connections IPv6 Support Lpar Support of OSA-ExpressPerformance enhancements for virtual servers HiperSockets LCSS0 LCSS1HiperSockets Network Concentrator Cryptography ZSeries Security Certification Cryptography Z990 Capacity Upgrade on Demand CUoDAvailability Plan Ahead and Concurrent ConditioningZ990 Server Capacity BackUp CBU Advanced Availability Functions Z990 Server Customer Initiated Upgrade CIUConcurrent Maintenance Transparent SparingConcurrent Memory Upgrade Concurrent Capacity Backup Downgrade CBU UndoParallel Sysplex Cluster Technology Coupling Facility Configuration Alternatives System-Managed CF Structure Duplexing Parallel Sysplex Coupling Connectivity Z990 Theoretical Maximum Coupling Link Speed OptionsIntelligent Resource Director IRD ScopeDynamic Channel Path Management Lpar CPU ManagementChannel Subsystem Priority Queuing Page Geographically Dispersed Parallel Sysplex HyperSwap Geographically Dispersed Parallel Sysplex Gdps Enhancements Page Page Parallel Sysplex FacilitiesNo single point of failure Components and assumptionsLinux on zSeries Z990 Support for LinuxIBM Middleware Tivoli Access Manager for Operating Systems Version Integrated Facility for Linux IFL Linux Distribution PartnersVM Version 4 and Version OSA-Express Ethernet for LinuxHiperSockets Fibre Channel Protocol FCP channel Support for LinuxCryptographic Support for Linux ZSeries 990 Family Configuration DetailLinux Support Processor Unit Assignments Cryptographic FeaturesOSA-Express Features Processor MemoryZ990 Frame and I/O Configuration Content Planning for I/O General InformationZ990 Dimensions Physical CharacteristicsZ990 Power/Heating/Cooling System Power Consumption kW System Cooling Air Flow Rate CFMCoupling Facility CF Level of Support Fiber-Optic Cabling and System ConnectivityFiber-optic jumper cabling package Integrated system services OS.e ZSeries Application Assist ProcessorBit Support OS ScalabilityAutomation Support System Services Sense and Respond with Workload ManagerWLM Improvements for WebSphere Data Management with DfsmsSystem Management Services CICS/VSAM enabled for 24x7 availabilityJES2 and JES3 Console Enhancements EnhancementsSecurity Services Advanced System AutomationRacf enhancements Multilevel SecurityLdap PKI Services FirewallApplication Enablement Services Network Authentication ServiceLanguage Environment Java UnicodeDynamic Virtual IP Address Takeover Communication ServicesRexx Functions Sysplex DistributorIntrusion Detection Services IDS HiperSocketsOS Unix HighlightsDistributed Computing Services Unix System Services benefits can includeZSeries File System zFS Distributed File Services DFS Server Message Block Internet ServicesPrint Services Infoprint CentralLibrary Center Integrated TestingSoftcopy Publications Support PublicationsOS 1.6 is supported on the following IBM servers Installation ConsiderationsOS 1.4 and 1.5 are supported on the following IBM servers Migration/CoexistenceMigration, installation and customization Enhancements ZSeries Bimodal Support for z/OSWizards Order z/OS through the InternetVM Version 3 VM Version 4 Exploiting New Technology Systems Management Application Enablement Networking with z/VMPage Engine-based Value Unit Pricing VM Version 5Enhancements in z/VM V5.1 include Network Virtualization and Security Technology ExploitationSystems Management Improvements To learn more
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