IBM z/OS manual CICS/VSAM enabled for 24x7 availability, JES2 and JES3, System Management Services

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availability. This form of clustering, known as single system image, also provides tremendous scale. Up to 32 zSeries servers with z/OS can appear as a single image for

data sharing applications (see previous section, Parallel Sysplex Clustering Technology).

CICS/VSAM enabled for 24x7 availability

DFSMS Transactional VSAM Services (DFSMStvs) allows you to share VSAM data sets across CICS, batch, and object-oriented applications on z/OS or distributed sys- tems. DFSMStvs can enable concurrent shared updates of recoverable VSAM data sets by CICS transactions, mul- tiple batch applications, and 24-hour availability of CICS and batch applications. DFSMStvs is built on top of VSAM record-level sharing (RLS), which permits sharing of recov- erable VSAM data sets at the record level.

System-Managed CF Structure Duplexing

System-Managed Coupling Facility (CF) Structure Duplex- ing is designed to signifi cantly enhance Parallel Sysplex availability. It can provide a robust failure recovery capa- bility via CF structure redundancy, and it can enhance Parallel Sysplex ease of use by helping to reduce the complexity of CF structure recovery. These benefi ts can be achieved by creating a duplicate (or duplexed) copy of a CF structure and then maintaining the two struc- ture instances in a synchronized state during normal CF operation. In the event of a CF related failure (or even a planned outage of a CF), failover to the remaining copy of the duplexed structures can be initiated and quickly com- pleted transparent to the CF structure user and without manual intervention.

JES2 and JES3

JES2 and JES3 handle the submission of work and the distribution of output for the Base Control Program. JES2 exercises independent control over its job processing functions, whereas JES3 exercises centralized control.

•In z/OS 1.2, JES2 and JES3 allow an installation to have up to 999,999 jobs managed at any single point in time. In addition, both provide the installation the ability to obtain (spinoff) their JESlog data sets prior to job com- pletion.

•The JES2 Health monitor, in z/OS 1.4, provides improved diagnostics. Even when JES2 is not responding to com- mands, the JES2 monitor, running in a separate address space, will be able to provide information about JES2’s status. JES2 also provides enhanced recovery from cor- rupted checkpoint data to prevent multisystem outages

•In z/OS 1.4, JES3 provides additional tolerance for ini- tialization errors and the MAINPROC refresh function which enables the dynamic addition of systems to the sysplex.

System Management Services

z/OS Version 1 Release 6 base elements

HCD

SMP/E

Managed System Infrastructure for Setup

Managed System Infrastructure for Operations

z/OS Version 1 Release 6 optional priced features

RMF

SDSF

HCM

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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 Models Z990 Family ModelsZ990 and IBM On/Off Capacity on Demand 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 CTC function Ficon ConnectivityFicon Support for Cascaded Directors 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 QdioZ990 OSA-Express Token-Ring NON-QDIO operational modeServer to User connections IPv6 Support Lpar Support of OSA-ExpressPerformance enhancements for virtual servers 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 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 Options Z990 Theoretical Maximum Coupling Link SpeedIRD Scope Intelligent Resource DirectorDynamic Channel Path Management Lpar CPU ManagementChannel Subsystem Priority Queuing Page Geographically Dispersed Parallel Sysplex HyperSwap Geographically Dispersed Parallel Sysplex Gdps Enhancements Page Page Facilities Parallel SysplexComponents and assumptions No single point of failureLinux on zSeries Z990 Support for LinuxIBM Middleware 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 HiperSocketsCryptographic Support for Linux ZSeries 990 Family Configuration DetailLinux Support 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.eBit Support OS ScalabilityAutomation Support Sense and Respond with Workload Manager System ServicesData Management with Dfsms WLM Improvements for WebSphereSystem Management Services CICS/VSAM enabled for 24x7 availabilityJES2 and JES3 Enhancements Console EnhancementsAdvanced System Automation Security ServicesMultilevel Security Racf enhancementsLdap Firewall PKI ServicesApplication Enablement Services Network Authentication ServiceLanguage Environment Unicode JavaRexx Functions Communication ServicesDynamic Virtual IP Address Takeover Sysplex DistributorHiperSockets Intrusion Detection Services IDSHighlights OS UnixDistributed Computing Services Unix System Services benefits can includeZSeries File System zFS 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 Engine-based Value Unit Pricing VM Version 5Enhancements in z/VM V5.1 include Technology Exploitation Network Virtualization and SecuritySystems Management Improvements To learn more
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