Practical Migration To Linux On System Z

Author : Lydia Parziale,Eduardo Simoes Franco,Craig Gardner,Berthold Gunreben,Tito Ogando,Serkan Sahin,IBM Redbooks
Publisher : IBM Redbooks
Page : 200 pages
File Size : 43,6 Mb
Release : 2014-09-18
Category : Computers
ISBN : 9780738439891

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Practical Migration from x86 to Linux on IBM System z by Lydia Parziale,Eduardo Simoes Franco,Craig Gardner,Berthold Gunreben,Tito Ogando,Serkan Sahin,IBM Redbooks Pdf

There are many reasons why you would want to optimize your servers through virtualization using Linux on IBM® System z®: Too many distributed physical servers with low utilization A lengthy provisioning process that delays the implementation of new applications Limitations in data center power and floor space High total cost of ownership (TCO) Difficulty allocating processing power for a dynamic environment This IBM Redbooks® publication provides a technical planning guide and example for IT organizations to migrate from their x86 environment to Linux on System z. It begins by examining the benefits of migrating workloads to Linux on System z. Here, we describe the workload centric method of information technology and then discuss the benefits of migrating workloads to Linux on System z. Next, we describe total cost of ownership analyses and we guide you in understanding how to analyze your environment before beginning a migration project. We also assist you in determining the expected consolidation ratio for a given workload type. We also describe virtualization concepts along with describing the benefits of migrating from the x86 environment to guests residing on an IBM z/VM® single system image with live guest relocation. This IBM Redbooks publication walks you through a migration approach, includes planning worksheets, as well as a chapter to assist you in analyzing your own systems. We also discuss post migration considerations such as acceptance testing of functionality and performance measurements.

Author : Lydia Parziale
Publisher : Unknown
Page : 282 pages
File Size : 46,5 Mb
Release : 2005*
Category : IBM computers
ISBN : OCLC:560660546

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Practical Migration to Linux on System Z. by Lydia Parziale Pdf

Author : Lydia Parziale,Michel Beaulieu,Felipe Mendes,Guilherme Nogueira,Lena Roesch,IBM Redbooks
Publisher : IBM Redbooks
Page : 228 pages
File Size : 52,6 Mb
Release : 2021-01-04
Category : Computers
ISBN : 9780738459301

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Practical Migration from x86 to LinuxONE by Lydia Parziale,Michel Beaulieu,Felipe Mendes,Guilherme Nogueira,Lena Roesch,IBM Redbooks Pdf

LinuxONE is a portfolio of hardware, software, and solutions for an enterprise-grade Linux environment. It has been designed to run more transactions faster and with more security and reliability specifically for the open community. It fully embraces open source-based technology. Two servers are available for LinuxONE: The IBM® LinuxONE III LT1 and IBM LinuxONE III LT2. We describe these servers in "IBM LinuxONE servers" on page 5. Aside from still running SUSE Linux Enterprise Server and Red Hat Enterprise Linux Servers, LinuxONE runs Ubuntu, which is popular on x86 hardware. Ubuntu, which runs the cloud, smartphones, a computer that can remote control a planetary rover for NASA, many market-leading companies, and the Internet of Things, is now available on IBM LinuxONE servers. Together, these two technology communities deliver the perfect environment for cloud and DevOps. Ubuntu 16.04 on LinuxONE offers developers, enterprises, and Cloud Service Providers a scalable and secure platform for next generation applications that include OpenStack, KVM, Docker, and JuJu. The following are reasons why you would want to optimize your servers through virtualization using LinuxONE: Too many distributed physical servers with low utilization A lengthy provisioning process that delays the implementation of new applications Limitations in data center power and floor space High total cost of ownership (TCO) Difficulty allocating processing power for a dynamic environment This IBM Redbooks® publication provides a technical planning reference for IT organizations that are considering a migration from their x86 distributed servers to LinuxONE. This book walks you through some of the important considerations and planning issues that you might encounter during a migration project. Within the context of a pre-existing UNIX based or x86 environment, it presents an end-to-end view of the technical challenges and methods necessary to complete a successful migration to LinuxONE.

Author : Makenzie Manna,Michel M. Beaulieu,Felipe Cardeneti Mendes,Guilherme Nogueira,Lena Roesch,IBM Redbooks
Publisher : IBM Redbooks
Page : 38 pages
File Size : 48,9 Mb
Release : 2020-12-10
Category : Computers
ISBN : 9780738459257

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Consolidation Planning Workbook: Practical Migration from x86 to IBM LinuxONE by Makenzie Manna,Michel M. Beaulieu,Felipe Cardeneti Mendes,Guilherme Nogueira,Lena Roesch,IBM Redbooks Pdf

IBM® LinuxONE is a portfolio of hardware, software, and solutions for an enterprise-grade Linux environment. It is designed to run more transactions faster and with more security and reliability specifically for the open community. It fully embraces open source-based technology. This IBM Redbooks® publication provides a technical sample workbook for IT organizations that are considering a migration from their x86 distributed servers to IBM LinuxONE. This publication provides you with checklists for each facet of your migration to IBM LinuxONE. This IBM Redbooks workbook assists you by providing the following information: Choosing workloads to migrate Analysis of how to size workloads for migration Financial benefits of a migration Project definition Planning checklists and worksheets Sample project plan

Author : Paolo Bruni,Andre Kres,Riccardo Paganelli,James Wilson,IBM Redbooks
Publisher : IBM Redbooks
Page : 218 pages
File Size : 43,5 Mb
Release : 2010-02-01
Category : Computers
ISBN : 9780738433752

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Leveraging IBM Cognos 8 BI for Linux on IBM System z by Paolo Bruni,Andre Kres,Riccardo Paganelli,James Wilson,IBM Redbooks Pdf

In this IBM® Redbooks® publication, we describe the role Cognos® plays in an Information On Demand (IOD) solution for IBM System z® and detail the functions of IBM Cognos 8 BI for Linux® on System z in current deployment scenarios. We show typical deployment architectures that show how to access disparate data sources both on and off the System z platform and show how the functions of the Cognos family of products provides a way to consolidate different BI solutions on System z. We provide examples of Cognos functions for resolving business requirements using reporting and OLAP capabilities as well as general deployment considerations of IBM Cognos 8 BI for Linux on System z. This publication is meant to help the Cognos Business Intelligence professional understand the strong points of System z architecture and the database specialist appreciate the Cognos family of products.

Author : Lydia Parziale,Saulo Silva,David Borges De Sousa,Livio Sousa,Junius Mills,Qi Ye,IBM Redbooks
Publisher : IBM Redbooks
Page : 190 pages
File Size : 52,7 Mb
Release : 2013-11-25
Category : Computers
ISBN : 9780738438870

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Set up Linux on IBM System z for Production by Lydia Parziale,Saulo Silva,David Borges De Sousa,Livio Sousa,Junius Mills,Qi Ye,IBM Redbooks Pdf

This IBM® Redbooks® publication shows the power of IBM System z® virtualization and flexibility in sharing resources in a flexible production environment. In this book, we outline the planning and setup of Linux on System z to move from a development or test environment into production. As an example, we use one logical partition (LPAR) with shared CPUs with memory for a production environment and another LPAR that shares some CPUs, but also has a dedicated one for production. Running in IBM z/VM® mode allows for virtualization of servers and based on z/VM shares, can prioritize and control their resources. The size of the LPAR or z/VM resources depends on the workload and the applications that run that workload. We examine a typical web server environment, Java applications, and describe it by using a database management system, such as IBM DB2®. Network decisions are examined with regards to VSWITCH, shared Open Systems Adapter (OSA), IBM HiperSocketsTM and the HiperPAV, or FCP/SCSI attachment used with a storage area network (SAN) Volume Controller along with performance and throughput expectations. The intended audience for this IBM Redbooks publication is IT architects who are responsible for planning production environments and IT specialists who are responsible for implementation of production environments.

Author : Lydia Parziale,Berthold Gunreben,Filipe Miranda,Paul W Novak,Ken Werner,IBM Redbooks
Publisher : IBM Redbooks
Page : 204 pages
File Size : 44,7 Mb
Release : 2016-05-06
Category : Computers
ISBN : 9780738440989

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The Virtualization Cookbook for IBM z Systems Volume 3: SUSE Linux Enterprise Server 12 by Lydia Parziale,Berthold Gunreben,Filipe Miranda,Paul W Novak,Ken Werner,IBM Redbooks Pdf

This IBM® Redbooks® publication is Volume 3 of a series of three books called The Virtualization Cookbook for IBM z Systems. The other two volumes are called: The Virtualization Cookbook for IBM z Systems Volume 1: IBM z/VM 6.3, SG24-8147 The Virtualization Cookbook for IBM z Systems Volume 2: Red Hat Enterprise Linux 7.1 Servers, SG24-8303 It is suggested that you start with Volume 1 of this series, because IBM z/VM® is the base "layer" when installing Linux on IBM z SystemsTM. Volume 1 starts with an introduction, describes planning, and then describes z/VM installation into a two-node, single system image (SSI) cluster, configuration, hardening, automation, and servicing. It adopts a cookbook format that provides a concise, repeatable set of procedures for installing and configuring z/VM using the SSI clustering feature. Volumes 2 and 3 describe how to roll your own Linux virtual servers on z Systems hardware under z/VM. The cookbook format continues with installing and customizing Linux. Volume 3 focuses on SUSE Linux Enterprise Server 12. It describes how to install and configure SUSE Linux Enterprise Server 12 onto the Linux administration system, which does the cloning and other tasks. It also explains how to use AutoYaST2, which enables you to automatically install Linux using a configuration file, and explains how to create and use appliances and bootable images from configuration files. In addition, it provides information about common tasks and tools available to service SUSE Linux Enterprise Server.

Author : Lydia Parziale,Murthy Garimella,Eric Marins,Filipe Miranda,Paul Novak,Vinodkumar Ramalingam,IBM Redbooks
Publisher : IBM Redbooks
Page : 282 pages
File Size : 55,6 Mb
Release : 2021-10-19
Category : Computers
ISBN : 9780738460062

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The Virtualization Cookbook for IBM Z Volume 2: Red Hat Enterprise Linux 8.2 by Lydia Parziale,Murthy Garimella,Eric Marins,Filipe Miranda,Paul Novak,Vinodkumar Ramalingam,IBM Redbooks Pdf

This IBM® Redbooks® publication is Volume 2 of a five-volume series of books entitled The Virtualization Cookbook for IBM Z®. This volume includes the following chapters: Chapter 1, "Installing Red Hat Enterprise Linux on LNXADMIN" on page 3, describes how to install and configure Red Hat Enterprise Linux onto the Linux Administration server, which performs the cloning and other tasks. Chapter 2, "Automated Red Hat Enterprise Linux installations by using Kickstart" on page 37, describes how to use Red Hat's kickstart tool to create Linux systems. This tool is fundamentally different from cloning in that an automated installation is implemented. You can try kickstart and cloning. Understand that these applications attempt to accomplish the same goal of quickly getting Linux systems up and running, and that you do not need to use both. Chapter 3, "Working with subscription-manager, yum, and DaNdiFied" on page 47, describes how the Red Hat Network works. It provides centralized management and provisioning for multiple Red Hat Enterprise Linux systems. Kickstart is an easy and fast way to provision your Linux guests in any supported Linux platform. It re-creates the operating system from the beginning by using the kickstart profile configuration file that installs the new operating system unattended. It also sets up the new guest according to the definition that was set up in the kickstart file. Usually, Linux is administered by the same team that manages Linux on all platforms. By using kickstart, you can create a basic profile that can be used in all supported platforms and customize Linux profiles, as needed. Cloning requires a better understanding of the z/VM environment and z/VM skills. It is a fast process if you enable the IBM FlashCopy® feature in advance. It clones the disks from a golden image to new disks that are used by the new Linux guest. The process can be automated by using the cloning scripts that are supplied with this book. It is recommended that you start with The Virtualization Cookbook for IBM Z Volume 1: IBM z/VM 7.2, SG24-8147 of this series because the IBM® z/VM hypervisor is the foundation (or base "layer") for installing Linux on IBM Z.

Author : Lydia Parziale,Edi Lopes Alves,Vic Cross,Paul Novak,Mauro Cesar de Souza,IBM Redbooks
Publisher : IBM Redbooks
Page : 546 pages
File Size : 40,9 Mb
Release : 2021-07-15
Category : Computers
ISBN : 9780738459721

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The Virtualization Cookbook for IBM Z Volume 1: IBM z/VM 7.2 by Lydia Parziale,Edi Lopes Alves,Vic Cross,Paul Novak,Mauro Cesar de Souza,IBM Redbooks Pdf

This IBM® Redbooks® publication is volume one of five in a series of books entitled The Virtualization Cookbook for IBM Z. The series includes the following volumes: The Virtualization Cookbook for IBM z Systems® Volume 1: IBM z/VM® 7.2, SG24-8147 The Virtualization Cookbook for IBM Z Volume 2: Red Hat Enterprise Linux 8.2 Servers, SG24-8303 The Virtualization Cookbook for IBM z Systems Volume 3: SUSE Linux Enterprise Server 12, SG24-8890 The Virtualization Cookbook for IBM z Systems Volume 4: Ubuntu Server 16.04, SG24-8354 Virtualization Cookbook for IBM Z Volume 5: KVM, SG24-8463 It is recommended that you start with Volume 1 of this series because the IBM z/VM hypervisor is the foundation (or base "layer") for installing Linux on IBM Z®. This book series assumes that you are generally familiar with IBM Z technology and terminology. It does not assume an in-depth understanding of z/VM or Linux. It is written for individuals who want to start quickly with z/VM and Linux, and get virtual servers up and running in a short time (days, not weeks or months). Volume 1 starts with a solution orientation, discusses planning and security, and then, describes z/VM installation methods, configuration, hardening, automation, servicing, networking, optional features, and more. It adopts a "cookbook-style" format that provides a concise, repeatable set of procedures for installing, configuring, administering, and maintaining z/VM. This volume also includes a chapter on monitoring z/VM and the Linux virtual servers that are hosted. Volumes 2, 3, and 4 assume that you completed all of the steps that are described in Volume 1. From that common foundation, these volumes describe how to create your own Linux virtual servers on IBM Z hardware under IBM z/VM. The cookbook format continues with installing and customizing Linux. Volume 5 provides an explanation of the kernel-based virtual machine (KVM) on IBM Z and how it can use the z/Architecture®. It focuses on the planning of the environment and provides installation and configuration definitions that are necessary to build, manage, and monitor a KVM on Z environment. This publication applies to the supported Linux on Z distributions (Red Hat, SUSE, and Ubuntu).

Author : Lydia Parziale,Edi Lopes Alves,Eric Everson Mendes Marins,IBM Redbooks
Publisher : IBM Redbooks
Page : 80 pages
File Size : 48,9 Mb
Release : 2017-12-12
Category : Computers
ISBN : 9780738456560

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Scale up for Linux on IBM Z by Lydia Parziale,Edi Lopes Alves,Eric Everson Mendes Marins,IBM Redbooks Pdf

This book was written by IBM® IT specialists who have experience implementing IBM Z® solutions, especially Linux on IBM LinuxONETM (LinuxONE) or IBM Z servers. Therefore, the content of this book follows the guidelines from Linux and IBM z/VM® regarding LinuxONE and IBM Z installations. The preferred practices described in this book are gathered from the experiences of those specialists in hundreds of projects at IBM and customer environments. This publication provides you with all of the information that you need to decide the best scaling architecture when implementing Linux on IBM Z or LinuxONE. This book has the following goals: To inform you about x86 sprawl problems To inform you that x86 Vertical Scale out architectures are problematic going forward To provide solutions to x86 server sprawl problems To inform you about the LinuxONE and IBM Z differentiation for each x86 server sprawl problem To provide virtulization and security options for LinuxOne and IBM Z The scaling up and scaling out architectures enable you to scale the capacity of an existing system to attend a sporadic application demand or an application workload. This gives you some freedom to operate in the environment. However, if this activity is performed without correct planning and the correct architecture choice, it leads to a server sprawl situation where your environment houses more servers than it should based on its current and predicted requirements. Although scaling out on x86 systems is a common form of scaling because of their popularity, the x86 systems were originally designed as cheap computers. Unfortunately, the scale out on x86 can easily become a problem in terms of total cost of ownership (TCO) when the environment starts to increase in terms of number of physical servers. The LinuxONE and IBM Z servers solve the sprawl problem caused by the scaling out of x86 servers, and are an excellent choice for cloud, mobile, big data, blockchain, analytics, and other workloads that require a robust and flexible environment. This publication describes the advantages and disadvantages of the scaling options. The audience of this publication consists of the following groups: Customers, IBM Business Partners, and IBM consultants planning and installing Linux on IBM Z, IBM Z family or x86 platform System administrators administering the Linux Systems If you are a customer considering LinuxONE and IBM Z family as a platform for your applications (analytics, blockchain, cloud, or other) or a pre-sales person, read those publications.

Author : Susan Adamovich,Sam Amsavelu,Armelle Chevé,Helene Grosch,Moshe Reder,David J Simpson,Narjisse Zaki,IBM Redbooks
Publisher : IBM Redbooks
Page : 128 pages
File Size : 47,5 Mb
Release : 2018-07-26
Category : Computers
ISBN : 9780738442617

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Oracle on IBM Z by Susan Adamovich,Sam Amsavelu,Armelle Chevé,Helene Grosch,Moshe Reder,David J Simpson,Narjisse Zaki,IBM Redbooks Pdf

Oracle Database 12c Release 1 running on Linux is available for deployment on the IBM ZTM family of servers. The enterprise-grade Linux on IBM Z solution is designed to add value to Oracle Database solutions, including the new functions that are introduced in Oracle Database 12c. In this IBM Redbooks® publication, we explore the IBM and Oracle Alliance and describe how Oracle Database benefits from the IBM Z platform. We then explain how to set up Linux guests to install Oracle Database 12c. We also describe how to use the Oracle Enterprise Manager Cloud Control Agent to manage Oracle Database 12c Release 1. We also describe a successful consolidation project from sizing to migration, performance management topics, and high availability. Finally, we end with a chapter about surrounding Oracle with Open Source software. The audience for this publication includes database consultants, installers, administrators, and system programmers. This publication is not meant to replace Oracle documentation, but to supplement it with our experiences while installing and using Oracle products.

Author : Lydia Parziale,Eduardo Simoes Franco,Felipe Cardeneti Mendes,IBM Redbooks
Publisher : IBM Redbooks
Page : 78 pages
File Size : 50,9 Mb
Release : 2019-07-17
Category : Computers
ISBN : 9780738457901

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Scale up for Linux on LinuxONE by Lydia Parziale,Eduardo Simoes Franco,Felipe Cardeneti Mendes,IBM Redbooks Pdf

This book was written by IBM® IT specialists who have experience implementing Linux solutions on IBM LinuxONETM (LinuxONE). The contents of this book follow the guidelines from Linux regarding LinuxONE installations. The preferred practices that are described in this book are gathered from the experiences of those specialists in hundreds of projects at IBM and customer environments. This IBM Redbooks® publication provides you with the information needed in making a decision on scaling architecture when implementing Linux on LinuxONE. This book has the following goals: To inform you about x86 sprawl problems To inform you that x86 Vertical Scale out architectures are problematic going forward To provide solutions to x86 server sprawl problems To inform you about the LinuxONE solution for each x86 server sprawl problem To provide virtualization and security options for LinuxOne The scaling up and scaling out architectures enable you to scale the capacity of an existing system to accommodate sporadic application demands or application workloads. This provides some freedom to operate in the environment. However, if this activity is performed without correct planning and the correct architecture choice, it leads to server sprawl where your environment houses more servers than it should based on its current and predicted requirements. This can potentially cause your enterprise to both waste resources and increase costs. Although scaling out on x86 systems is a common form of growth because of inexpensive x86 systems, the scale out can easily become a problem in terms of total cost of ownership (TCO) when the environment starts to increase the number of physical servers and the resources needed to maintain them. LinuxONE servers solve the sprawl problem caused by the scaling out of x86 servers, and are an excellent choice for cloud, mobile, big data, blockchain, analytics, and other workloads that require a robust and flexible environment. This publication describes the advantages and disadvantages of the LinuxONE scaling option. The audience for this publication consists of the following groups: Customers, IBM Business Partners, IT architects and IT Specialists planning and installing Linux on LinuxONE System administrators managing the Linux Systems

Author : Ivan Dobos,Sam Amsavelu,Kathryn Arrell,Gaylan Braselton,Armelle Cheve,Damian Gallagher,Hel ne Grosch,Michael MacIsaac,Romain Pochard,Barton Robinson,David Simpson,Richard Smrcina,IBM Redbooks
Publisher : IBM Redbooks
Page : 416 pages
File Size : 40,9 Mb
Release : 2013-11-22
Category : Computers
ISBN : 9780738438719

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Experiences with Oracle 11gR2 on Linux on System z by Ivan Dobos,Sam Amsavelu,Kathryn Arrell,Gaylan Braselton,Armelle Cheve,Damian Gallagher,Hel ne Grosch,Michael MacIsaac,Romain Pochard,Barton Robinson,David Simpson,Richard Smrcina,IBM Redbooks Pdf

Linux on System z offers many advantages to customers who rely on the IBM® mainframe systems to run their businesses. Linux on System z makes use of the qualities of service in the System z® hardware and in z/VM®, making it a robust industrial strength Linux. This provides an excellent platform for hosting Oracle solutions that run in your enterprise. This IBM Redbooks® publication is divided into several sections to share the following experiences that are gained while Oracle Database 11gR2 is installed and tested: Setting up Red Hat Enterprise Linux 6 for Oracle Managing an Oracle on Linux on System z environment Provisioning Linux guests using several tools It also includes many general hints and tips for running Oracle products on IBM System z with Linux and z/VM. Interested readers include database consultants, installers, administrators, and system programmers. This book is not meant to replace Oracle documentation but to supplement it with our experiences while Oracle products are installed and used.

Author : Helmut Hellner,Ingo Franzki,Martin Kammerer,Roopa Mahendra,Wilhelm Mild,IBM Redbooks
Publisher : IBM Redbooks
Page : 216 pages
File Size : 50,6 Mb
Release : 2010-02-03
Category : Computers
ISBN : 9780738434001

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z/VSE Using DB2 on Linux for System z by Helmut Hellner,Ingo Franzki,Martin Kammerer,Roopa Mahendra,Wilhelm Mild,IBM Redbooks Pdf

Data is one the most critical and valuable assets of a business. Critical strategic decisions can be made more quickly and effectively when they are based on complete, accurate, and timely operational data. From this point of view, it is important to have an enterprise data management architecture that supports a flexible global view of the business. Many environments today are heterogeneous with a high quantity and diversity of data. In this IBM® Redbooks® publication, we help enterprise architects and IT managers with these environments make decisions for a centralized database or data warehouse. We recommend a centralized data management environment on Linux® on System z®. We include guidance for IBM z/VSETM and Linux specialists to reorganize existing IBM DB2® VSE data and build a database environment with continuous operation in Linux on System z. We begin this book by describing the possibilities and advantages of enterprise data management and different technical ways to realize it. Then we discuss planning, which is important for setting the foundation of the architecture that is implemented. We explain the hardware considerations for capacity and performance planning. For the z/VSE system and Linux on System z, we describe considerations for operation in a logical partition (LPAR) and in a virtualized environment with IBM z/VM®. In addition, we discuss the disk behavior for different workloads, storage dependencies, network connections, and DB2 database considerations. We also guide you in customizing the DB2 server for z/VSE, z/VM, and DB2 on Linux to allow existing z/VSE and z/VM applications to access the database on Linux on System z. We include the data migration, application considerations, dependencies, compatibility, monitoring, and tuning possibilities in such an environment.

Author : Lydia Parziale,Anthony Bongiorno,Howard Charter,Jo Johnston,Volker Masen,Clovis Pereira,Sreehari Somasundaran,Srivatsan Venkatesan,IBM Redbooks
Publisher : IBM Redbooks
Page : 134 pages
File Size : 50,8 Mb
Release : 2016-03-31
Category : Computers
ISBN : 9780738436623

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An Introduction to z/VM Single System Image (SSI) and Live Guest Relocation (LGR) by Lydia Parziale,Anthony Bongiorno,Howard Charter,Jo Johnston,Volker Masen,Clovis Pereira,Sreehari Somasundaran,Srivatsan Venkatesan,IBM Redbooks Pdf

IBM® z/VM® 6.2 introduces significant changes to z/VM in the form of multi-system clustering technology allowing up to four z/VM instances in a single system image (SSI) cluster. This technology is important, because it offers clients an attractive alternative to vertical growth by adding new z/VM systems. In the past, this capability required duplicate efforts to install, maintain, and manage each system. With SSI, these duplicate efforts are reduced or eliminated. Support for live guest relocation (LGR) allows you to move Linux virtual servers without disruption to the business, helping you to avoid planned outages. The z/VM systems are aware of each other and can take advantage of their combined resources. LGR enables clients to avoid loss of service due to planned outages by relocating guests from a system requiring maintenance to a system that remains active during the maintenance period. Together, the SSI and LGR technologies offer substantial client value, and they are a major departure from past z/VM practices. This IBM Redbooks® publication gives you a broad understanding of the new SSI architecture and an overview of LGR. We show an LGR example that shows a typical SAP user environment. In our example, the SAP Application Server Central Instance resides on a Linux on System z® guest and an IBM DB2® 10 database server runs on z/OS®. This book is written for IT architects, who design the systems, and IT specialists, who build the systems.