IBM z/OS manual ZSeries Overview, What does an on demand company look like?

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zSeries Overview

Technology has always accelerated the pace of change. New technologies enable new ways of doing business, shifting markets, changing customer expectations, and redefi ning business models. Each major enhancement to technology presents opportunities. Companies that under- stand and prepare for changes can gain advantage over competitors and lead their industries.

Customers of every size, and in every industry are looking for ways to make their businesses more resilient in the face of change and uncertainty. They want the ability to react to rapidly changing market conditions, manage risk, outpace their competitors with new capabilities and deliver clear returns on investments.

Welcome to the on demand era, the next phase of e-business, in which companies move beyond simply integrating their processes to actually being able to sense and respond to fl uctuating market conditions and provide products and services to customers on demand. While the former notion of on demand as a utility capability is a key component, on demand companies have much broader capabilities.

What does an on demand company look like?

Responsive: It can sense and respond in real time to the changing needs of customers, employees, suppliers and partners

Variable: It must be capable of employing variable cost structures to do business at high levels of productivity, cost control, capital effi ciency and fi nancial predictability.

Focused: It concentrates on its core competencies – areas where it has a differentiating advantage – and draws on the skills of strategic partners to manage needs outside of these competencies.

Resilient: It can handle the ups and downs of the global market, and manage changes and threats with consis- tent availability, security and privacy – around the world, around the clock.

To support an on demand business, the IT infrastructure must evolve to support it. At its heart the data center must transition to refl ect these needs; the data center must be responsive to changing demands, it must be variable to support the diverse environment, it must be fl exible so that applications can run on the optimal resources at any point in time, and it must be resilient to support an always open for business environment.

The on demand era plays to the strengths of the IBM ^® zSeries®. The IBM ^zSeries 900

(z900) was launched in 2000 and was the fi rst IBM server "designed from the ground up for e-business." The latest member of the family, the IBM ^zSeries 990 (z990), brings enriched functions that are required for the on demand data center.

The "responsive" data center needs to have systems that are managed to the quality of service goals of the business; they need systems that can be upgraded transparently to the user and they must be adaptable to the changing requirements of the business. With the zSeries you have a server with high levels of reliability and a balanced design to ensure high levels of utilization and consistently high service to the user. The capacity on demand features con- tinue to evolve, helping to ensure that upgrading the servers is timely and meets the needs of your business. It’s not just the capacity of the servers that can be changed on demand, but also the mix of workload and the allocation of resources to refl ect the evolving needs and priorities of the business.

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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 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 LPUp to 1024 Escon Channels Z990 Channels and I/O ConnectivityLogical Channel SubSystem Lcss Spanning IC Channel SpanningIntegrated Cluster Bus-4 ICB-4 InterSystem Channel-3 ISC-3Integrated Cluster Bus-2 ICB-2 Integrated Cluster Bus-3 ICB-3Flexibility Three channel types supported Ficon Express Channel Card FeaturesFibre Channel Connectivity PerformanceNative 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 Plan Ahead and Concurrent Conditioning Z990 Capacity Upgrade on Demand CUoDAvailability ZSeries Security Certification CryptographyZ990 Server Capacity BackUp CBU Transparent Sparing Z990 Server Customer Initiated Upgrade CIUConcurrent Maintenance Advanced Availability FunctionsConcurrent 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 OSA-Express Ethernet for Linux Linux Distribution PartnersVM Version 4 and Version Integrated Facility for Linux IFLFibre Channel Protocol FCP channel Support for Linux HiperSocketsZSeries 990 Family Configuration Detail Cryptographic Support for LinuxLinux Support Processor Memory Cryptographic FeaturesOSA-Express Features Processor Unit AssignmentsGeneral Information Z990 Frame and I/O Configuration Content Planning for I/OSystem Cooling Air Flow Rate CFM Physical CharacteristicsZ990 Power/Heating/Cooling System Power Consumption kW Z990 DimensionsFiber-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 JavaSysplex Distributor Communication ServicesRexx Functions Dynamic Virtual IP Address TakeoverHiperSockets 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 ServicesPublications Integrated TestingSoftcopy Publications Support Library CenterMigration/Coexistence Installation ConsiderationsOS 1.4 and 1.5 are supported on the following IBM servers OS 1.6 is supported on the following IBM serversZSeries 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