IBM Migration, installation and customization Enhancements, ZSeries Bimodal Support for z/OS

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This consistent coexistence, migration and fallback policy applies to release migrations for:

•Single system confi gurations

•Individual systems within a multisystem confi guration

•Cases where a simultaneous IPL is used to migrate all systems in a multisystem confi guration at the same time.

For additional information on coexistence and release migration information, refer to z/OS Planning for Installation (GA22-7504) at: ibm.com/servers/eserver/zseries/zos/ bkserv/fi nd_books.html.

The following table describes the migration/coexistence supported releases. The release shown in column 1 is the highest release running in a multisystem confi guration.

Migration/Coexistence Supported Releases (OS/390 & z/OS)

Release

Migration/Coexistence Release

z/OS R4 z/OS R4, z/OS R3, z/OS R2, {z/OS R1, OS/390 R10}

z/OS R5 z/OS R5, z/OS R4, z/OS R3, z/OS R2

z/OS R6 z/OS R6, z/OS R5, z/OS R4, z/OS R3

z/OS R72

z/OS R7, z/OS R6, z/OS R5, z/OS R4

1.OS/390 R10 and z/OS R1 treated as one coexistence level

2.z/OS R7 is planned to be available September 2005

This information is being provided to you to facilitate release planning and to help ensure appropriate position- ing for future software migrations.

Note: Specifi c functions might only be available on the up-level systems, or it might be necessary to up-level all systems to enable some functions.

For additional information on z/OS planning, refer to z/OS and z/OS.e Planning for Installation, available on the z/OS Web site in the z/OS Library at: ibm.com/servers/eserver/ zseries/zos.

For the latest information regarding z/OS and OS/390 marketing and service withdrawal dates visit: ibm.com/ servers/eserver/zseries/zos/support/zos_eos_dates.html.

Migration, installation and customization

enhancements

For information on migration to the latest z/OS releases, see the z/OS Migration Web page ibm.com/zseries/zos/ migration. The publications are available from this site for helping to plan the migration to z/OS 1.6.

zSeries Bimodal Support for z/OS

IBM provides is announcing the z/OS Bimodal Migration Accommodation Offering to assist customers in migrat- ing from OS/390 to z/OS. This addresses many customer requests to have a “fallback” option to 31-bit mode when

first migrating to z/OS in 64-bit mode on a z/Architecture server. IBM has reconsidered the investment in 31-bit sup- port on a zSeries server to encourage our customers to move forward. This offering is available for 6 months for each z/OS license (5694-A01) starting from the registration of a z/OS license to a z/Architecture server. This offering applies to z/OS Version 1 Release 2, 3, and 4, and will not be provided for z/OS 1.5 or for any z/OS.e releases.

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Contents IBM zSeries 990 and z/OS Reference Guide Table of Contents What does an on demand company look like? ZSeries OverviewTools for Managing e-business To huge increases in user activityArchitecture Operating System Support ArchitectureTion IBM zSeriesBase Ratio Z990 Design and Technology MultiChip Module is the technology cornerstone for Z990 and IBM On/Off Capacity on Demand Z990 Family ModelsZ990 Models Model Upgrades Z990 and z900 Performance Comparison Z990 Cage Layout Z990 I/O SubSystemPhysical Channel IDs PCHIDs SubSystem Greater than 15 Logical Partitions LPLogical Channel SubSystem Lcss Spanning Z990 Channels and I/O ConnectivityIC Channel Spanning Up to 1024 Escon ChannelsIntegrated Cluster Bus-2 ICB-2 InterSystem Channel-3 ISC-3Integrated Cluster Bus-3 ICB-3 Integrated Cluster Bus-4 ICB-4Fibre Channel Connectivity Ficon Express Channel Card FeaturesPerformance Flexibility Three channel types supportedNative Ficon Channels Shared infrastructureFicon Support for Cascaded Directors Ficon ConnectivityFicon CTC function FCP Channels Ficon Bridge ChannelFCP Full fabric connectivity Open Systems Adapter-Express Features OSA-ExpressOSA-Express Integrated Console Controller Z990 OSA-Express 1000BASE-T EthernetZ990 OSA-Express Gigabit Ethernet Queued Direct Input/Output QdioServer to User connections NON-QDIO operational modeZ990 OSA-Express Token-Ring Performance enhancements for virtual servers Lpar Support of OSA-ExpressIPv6 Support LCSS0 LCSS1 HiperSocketsHiperSockets Network Concentrator Cryptography Availability Z990 Capacity Upgrade on Demand CUoDZSeries Security Certification Cryptography Plan Ahead and Concurrent ConditioningZ990 Server Capacity BackUp CBU Concurrent Maintenance Z990 Server Customer Initiated Upgrade CIUAdvanced Availability Functions Transparent SparingParallel Sysplex Cluster Technology Concurrent Capacity Backup Downgrade CBU UndoConcurrent Memory Upgrade Coupling Facility Configuration Alternatives System-Managed CF Structure Duplexing Parallel Sysplex Coupling Connectivity Options Z990 Theoretical Maximum Coupling Link SpeedIRD Scope Intelligent Resource DirectorChannel Subsystem Priority Queuing Lpar CPU ManagementDynamic Channel Path Management Page Geographically Dispersed Parallel Sysplex HyperSwap Geographically Dispersed Parallel Sysplex Gdps Enhancements Page Page Facilities Parallel SysplexComponents and assumptions No single point of failureIBM Middleware Z990 Support for LinuxLinux on zSeries Tivoli Access Manager for Operating Systems Version VM Version 4 and Version Linux Distribution PartnersIntegrated Facility for Linux IFL OSA-Express Ethernet for LinuxFibre Channel Protocol FCP channel Support for Linux HiperSocketsLinux Support ZSeries 990 Family Configuration DetailCryptographic Support for Linux OSA-Express Features Cryptographic FeaturesProcessor Unit Assignments Processor MemoryGeneral Information Z990 Frame and I/O Configuration Content Planning for I/OZ990 Power/Heating/Cooling System Power Consumption kW Physical CharacteristicsZ990 Dimensions System Cooling Air Flow Rate CFMFiber-Optic Cabling and System Connectivity Coupling Facility CF Level of SupportFiber-optic jumper cabling package Integrated system services ZSeries Application Assist Processor OS.eAutomation Support OS ScalabilityBit Support Sense and Respond with Workload Manager System ServicesData Management with Dfsms WLM Improvements for WebSphereJES2 and JES3 CICS/VSAM enabled for 24x7 availabilitySystem Management Services Enhancements Console EnhancementsAdvanced System Automation Security ServicesMultilevel Security Racf enhancementsLdap Firewall PKI ServicesLanguage Environment Network Authentication ServiceApplication Enablement Services Unicode JavaRexx Functions Communication ServicesDynamic Virtual IP Address Takeover Sysplex DistributorHiperSockets Intrusion Detection Services IDSHighlights OS UnixZSeries File System zFS Unix System Services benefits can includeDistributed Computing Services Internet Services Distributed File Services DFS Server Message BlockInfoprint Central Print ServicesSoftcopy Publications Support Integrated TestingLibrary Center PublicationsOS 1.4 and 1.5 are supported on the following IBM servers Installation ConsiderationsOS 1.6 is supported on the following IBM servers Migration/CoexistenceZSeries Bimodal Support for z/OS Migration, installation and customization EnhancementsOrder z/OS through the Internet WizardsVM Version 3 VM Version 4 Exploiting New Technology Systems Management Networking with z/VM Application EnablementPage Enhancements in z/VM V5.1 include VM Version 5Engine-based Value Unit Pricing Technology Exploitation Network Virtualization and SecuritySystems Management Improvements To learn more
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