IBM z/OS manual No single point of failure, Components and assumptions

Page 45

Continuous Availability Recommended Conﬁguration for

Parallel Sysplex

Key attributes can include

•	No single point of failure
•	Fast, automatic recovery

IC

z/OS

ICF

Dedicated (External)

Coupling Facility

z990 with CFs only z900 Model 100 9674, 9672 R06,

or z800 Model 0CF

Internal Coupling

Facility

z/OS

– CF: rebuild in surviving CF

– CEC, z/OS, OS/390: restart subsystems on surviving

image

– TM/DBMS: restart in place

• Surviving components absorb new work

• No service loss for planned or unplanned outages

• Near unlimited, plug-and-play growth capacity

Sysplex Timers

ESCON/FICON Express Channels

Note: z990 will attach to 9037-001 or 9037-002. Service for 9037-001 will be discontinued at the end of 2003.

Components and assumptions

•Two Coupling Facilities; at least one external or else using System-Managed CF Structure Duplexing

•Two Sysplex Timers

•Two z/OS or OS/390 servers with redundant backup capacity

•Two links from each CF to each image

•Two hardware management consoles

•Two ESCON or FICON Directors with cross-connected disks

•Dual electrical power grids

•Cloned OS/390 images, latest available software levels

•Automation capabilities for recovery/restart

•Critical data on RAID and/or mirrored disks

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Image 45

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 Family Models Z990 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 Connectivity Ficon CTC functionFicon 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 QdioNON-QDIO operational mode Z990 OSA-Express Token-RingServer to User connections Lpar Support of OSA-Express IPv6 SupportPerformance 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 Capacity Backup Downgrade CBU Undo Concurrent Memory UpgradeParallel 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 DirectorLpar CPU Management Dynamic Channel Path 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 failureZ990 Support for Linux Linux on zSeriesIBM 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 HiperSocketsZSeries 990 Family Conﬁguration Detail Cryptographic Support for LinuxLinux 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.eOS Scalability Bit SupportAutomation Support Sense and Respond with Workload Manager System ServicesData Management with Dfsms WLM Improvements for WebSphereCICS/VSAM enabled for 24x7 availability System Management ServicesJES2 and JES3 Enhancements Console EnhancementsAdvanced System Automation Security ServicesMultilevel Security Racf enhancementsLdap Firewall PKI ServicesNetwork Authentication Service Application Enablement ServicesLanguage Environment Unicode JavaRexx Functions Communication ServicesDynamic Virtual IP Address Takeover Sysplex DistributorHiperSockets Intrusion Detection Services IDSHighlights OS UnixUnix System Services beneﬁts can include Distributed Computing ServicesZSeries 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 VM Version 5 Engine-based Value Unit PricingEnhancements in z/VM V5.1 include Technology Exploitation Network Virtualization and SecuritySystems Management Improvements To learn more