IBM Z Redbooks

05 December 2025, Redbooks

The IBM Z time synchronization solution uses two technologies to ensure precise, consistent, and resilient timekeeping across IBM Z systems; Server Time Protocol (STP) and External Time Sources (ETS). STP is a server-wide facility that is implemented in the Licensed Internal Code (LIC) of the IBM Z® platform. It provides improved time synchronization in a sysplex or non-sysplex configuration. ETS ...

04 December 2025, Draft Redbooks

Cyberattacks and data corruption threats are escalating, making cyber resiliency a critical component of an enterprise IT strategy. While traditional disaster recovery focuses on physical failures, cyber resiliency addresses logical corruption caused by ransomware, malware, or insider threats. This IBM® Redbooks® publication introduces the IBM Z® Cyber Vault solution—a comprehensive approach to ...

02 December 2025, Redbooks

This IBM Redbooks® publication helps you install, configure, and maintain IBM z17™ (machine type 9175) systems. IBM z17 systems offer new functions that require a comprehensive understanding of the available configuration options. This book presents configuration setup scenarios and describes implementation examples in detail. This publication is intended for systems engineers, hardware ...

29 October 2025, Redbooks

This IBM Redbooks® publication describes the connectivity options that are available for use within and beyond the data center for the IBM Z® family of mainframes, which includes the following systems: IBM z17™ ME1 IBM z16™ A01 IBM z16 A02 IBM z16 AGZ IBM z15® T01 IBM z15 T02 This book highlights the hardware and software components, functions, typical uses, coexistence, ...

27 October 2025, Draft Redbooks

As cyberattacks continue to increase, the cost and reputation impacts of data breaches remain a top concern across all enterprises. Even if sensitive data is encrypted and is of no use now, cybercriminals are harvesting that data because they might gain access to a quantum computer that can break classical cryptographic algorithms sometime in the future. Therefore, organizations must start ...

07 October 2025, Redbooks

This IBM Redbooks® publication presents an overview of the IBM GDPS® offerings and the roles they play in delivering a business IT resilience solution. The book begins with general concepts of business IT resilience and disaster recovery (DR), along with issues that are related to high application availability, data integrity, and performance. These topics are considered within the framework of ...

23 September 2025, Redpaper

Many of the world's transactional workloads run on the mainframe. Organizations face a critical challenge: helping ensure the availability of workloads and an infrastructure that supports essential business applications. Many enterprises report two major challenges: an overwhelming volume of data to process and too many tools with disjointed user experiences. The mainframe does not operate in ...

19 September 2025, Redpaper

This IBM® Redpaper publication introduces System Recovery Boost (SRB), which is a firmware feature that was introduced with IBM z15™ and enhanced on IBM z16™ and IBM z17™. SRB delivers substantially faster system shutdown and restart, short duration Recovery Process Boosts (RPBs) for sysplex events, and fast catch-up of an accumulated backlog of mission-critical workloads after specific events ...

10 September 2025, Redbooks

This IBM Redbooks® publication describes the features and functions of the latest IBM Z® platform member, which is built with the IBM Telum® II processor: the IBM z17™ (machine type 9175). It includes details about the IBM z17 processor design, I/O innovations, security features, and supported operating systems. The IBM Z platform is known for its security, resiliency, performance, and ...

07 August 2025, Redbooks

This IBM Redbooks publication details our new "8 9s across the enterprise" know-how by explaining resiliency concepts and then demonstrating how to build the LinuxONE Emperor 4 Resiliency Framework for RHOCP. This should include required hardware/software, configuration details for PR/SM and z/VM, explaining how GDPS xDR proxies work for z/VM and guests, how SSI contributes to business ...