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IBM z15 Technical Introduction

Release Date: 2021/05/01
ISBN: 9780738459172
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This IBM® Redbooks® publication introduces the latest member of the IBM Z® platform, the IBM z15™. It includes information about the Z environment and how it helps integrate data and transactions more securely. It also provides insight for faster and more accurate business decisions.

The z15 is a state-of-the-art data and transaction system that delivers advanced capabilities, which are vital to any digital transformation. The z15 is designed for enhanced modularity, and occupies an industry-standard footprint. It is offered as a single air-cooled 19-inch frame called the z15 T02, or as a multi-frame (1 to 4 19-inch frames) called the z15 T01.

Both z15 models excel at the following tasks::


  • Using hybrid multicloud integration services

  • Securing and protecting data with encryption everywhere

  • Providing resilience with key to zero downtime

  • Transforming a transactional platform into a data powerhouse

  • Getting more out of the platform with operational analytics

  • Accelerating digital transformation with agile service delivery

  • Revolutionizing business processes

  • Blending open source and IBM Z technologies


This book explains how this system uses innovations and traditional Z strengths to satisfy growing demand for cloud, analytics, and open source technologies. With the z15 as the base, applications can run in a trusted, reliable, and secure environment that improves operations and lessens business risk.

Table of Contents

  1. May 2021+Front cover
  2. Notices
    1. Trademarks
  3. Preface
    1. Authors
    2. Now you can become a published author, too!
    3. Comments welcome
    4. Stay connected to IBM Redbooks
  4. Chapter 1. Designed to take on today’s IT demands
    1. 1.1 The IBM z15: The platform for the digital economy
    2. 1.1.1 Using hybrid cloud integration services
    3. 1.1.2 Securing and protecting data with encryption everywhere
    4. 1.1.3 Providing resilience: The key to zero downtime
    5. 1.1.4 Transforming a transactional platform into a data powerhouse
    6. 1.1.5 Getting more out of the platform with operational analytics
    7. 1.1.6 Accelerating digital transformation with agile service delivery
    8. 1.1.7 Revolutionizing business processes
    9. 1.1.8 Blending open source and IBM Z technologies
    10. 1.2 z15 technical description
    11. 1.2.1 Technical highlights
    12. 1.2.2 IBM z15 features and functions
    13. 1.2.3 Storage connectivity
    14. 1.2.4 Network connectivity
    15. 1.2.5 Cryptography
    16. 1.2.6 Clustering connectivity
    17. 1.2.7 Special-purpose features and functions
    18. 1.2.8 Capacity on Demand and performance
    19. 1.2.9 Reliability, availability, and serviceability
    20. 1.3 z15 software support
    21. 1.3.1 IBM compilers
  5. Chapter 2. IBM z15 Model T01 hardware overview
    1. 2.1 Models and upgrade paths
    2. 2.2 Frames and cabling
    3. 2.3 CPC drawers
    4. 2.3.1 Single-chip modules
    5. 2.3.2 Processor unit
    6. 2.3.3 Memory
    7. 2.3.4 Hardware system area
    8. 2.4 I/O system structure
    9. 2.5 Power and cooling
    10. 2.5.1 Power options
    11. 2.5.2 Cooling options
    12. 2.5.3 Power considerations
  6. Chapter 3. IBM z15 Model T02 hardware overview
    1. 3.1 Models and upgrade paths
    2. 3.2 Frames and cabling
    3. 3.3 CPC drawers
    4. 3.3.1 Single-chip modules
    5. 3.3.2 Processor unit
    6. 3.3.3 Memory
    7. 3.3.4 Hardware system area
    8. 3.4 I/O system structure
    9. 3.5 Power and cooling
    10. 3.5.1 Power options
    11. 3.5.2 Cooling options
    12. 3.5.3 Power considerations
  7. Chapter 4. Supported features and functions
    1. 4.1 z15 I/O connectivity overview
    2. 4.2 Storage connectivity
    3. 4.2.1 zHyperLink Express
    4. 4.2.2 FICON Express features
    5. 4.2.3 IBM Fibre Channel Endpoint Security
    6. 4.3 Network connectivity
    7. 4.4 Clustering connectivity
    8. 4.5 Server Time Protocol
    9. 4.6 Compression options
    10. 4.6.1 On-core Compression coprocessor
    11. 4.6.2 On-chip IBM Integrated Accelerator for zEnterprise Data Compression
    12. 4.7 Cryptographic features
    13. 4.7.1 Central Processor Assist for Cryptographic Functions
    14. 4.7.2 Crypto Express7S
    15. 4.7.3 Crypto Express6S and Crypto Express5S (carry forward only)
    16. 4.8 IBM Virtual Flash Memory
    17. 4.9 Hardware Management Console and Support Element
  8. Chapter 5. IBM z15 system design strengths
    1. 5.1 Technology improvements
    2. 5.1.1 System capacity
    3. 5.1.2 Processor design highlights
    4. 5.1.3 Memory
    5. 5.2 Virtualization
    6. 5.2.1 Hardware virtualization
    7. 5.2.2 Hybrid cloud environments
    8. 5.3 Capacity and performance
    9. 5.3.1 Capacity settings
    10. 5.3.2 Capacity on Demand
    11. 5.3.3 z15 performance
    12. 5.4 Reliability, availability, and serviceability
    13. 5.4.1 RAS capability for the Support Element
    14. 5.4.2 RAS capability for the Hardware Management Console
    15. 5.5 High availability with Parallel Sysplex
    16. 5.6 Pervasive encryption
    17. 5.6.1 IBM Fibre Channel Endpoint Security
    18. 5.6.2 IBM Data Privacy Passports
    19. 5.6.3 Secure Service Container
  9. Chapter 6. Operating system support
    1. 6.1 Software support summary
    2. 6.1.1 Operating system summary
    3. 6.1.2 Application development and languages
    4. 6.1.3 IBM compilers
    5. 6.2 Support by operating system
    6. 6.2.1 z/OS
    7. 6.2.2 z/VM
    8. 6.2.3 z/VSE
    9. 6.2.4 z/TPF
    10. 6.2.5 Linux on IBM Z
    11. 6.2.6 Kernel-based virtual machine hypervisor
    12. 6.3 Software licensing
    13. 6.4 References
  10. Back cover
3.141.244.201