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IBM Systems Journal

Issue 4 • Date 2008

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Displaying Results 1 - 19 of 19
  • Message from the Vice President, Solutions & Global Technical Sales, IBM Global Sales & Distribution

    Publication Year: 2008, Page(s): 1
    IEEE is not the copyright holder of this material | PDF file iconPDF (47 KB)
    Freely Available from IEEE
  • Preface

    Publication Year: 2008, Page(s): 491
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (26 KB)

    The quest to provide IT (information technology) systems infrastructures that can support the required level of end-user service availability for an organization is ongoing and likely to be never ending. That said, real progress has been made as engineers and practitioners have increased their objectives from a focus on reliable systems, to multisystem configurations, to multisite deployments, so ... View full abstract»

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  • Achieving continuous availability of IBM systems infrastructures

    Publication Year: 2008, Page(s):493 - 503
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (295 KB)

    This paper introduces, at a high level, the key topics relevant to continuous availability of IBM systems infrastructures. After defining terms and identifying what is encompassed in the scope of continuous availability of IBM system infrastructures, we explain the IT (information technology) life cycle of planning and execution through which an IT organization and its infrastructure pass to creat... View full abstract»

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  • IBM Parallel Sysplex clustering: Technology options for continuous availability

    Publication Year: 2008, Page(s):505 - 517
    Cited by:  Papers (4)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (298 KB)

    IBM Parallel Sysplex® is a clustering technology that was designed to address specific client business objectives for IBM mainframe System z® servers. The nondisruptive addition of scalable processing capacity and improved application availability with respect to unplanned and planned outages were two key design objectives. This paper focuses on the evolving technology options that s... View full abstract»

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  • IBM Power Systems platform: Advancements in the state of the art in IT availability

    Publication Year: 2008, Page(s):519 - 533
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (506 KB)

    This paper surveys the current state of information technology (IT) availability on the IBM System p5® server platform, then describes how selected hardware and software features of the next-generation IBM Power™ Systems platform (by which we specifically mean IBM POWER6™ processor-based systems running the IBM AIX™ 6 operating system) will enable client IT organization... View full abstract»

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  • Resilient hosting in a continuously available virtualized environment

    Publication Year: 2008, Page(s):535 - 548
    Cited by:  Papers (2)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (504 KB)

    In this paper, we describe continuously available services and application hosting on the Events/IBM.comt Infrastructure (EI)—a continuously available virtualized environment based on three active data centers that has demonstrated 100-percent availability for many premier Web sites, including www.ibm.com. The environment consists of simultaneously active paths spanning three geographically... View full abstract»

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  • IT service management for high availability

    Publication Year: 2008, Page(s):549 - 561
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (386 KB)

    High-availability service management (HASM) is defined as information technology (IT) service management that is designed to meet the business demand for availability of critical IT and IT-enabled business services. HASM requires the use of the Six Sigma method and analytical tools applied to key service management processes and services; event and incident monitoring and management design; high e... View full abstract»

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  • Combining high availability and disaster recovery solutions for critical IT environments

    Publication Year: 2008, Page(s):563 - 575
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (387 KB)

    This paper discusses high availability and disaster recovery solutions and their differences and presents the concepts and technical details of various solutions that combine them for highly critical environments. It discusses the business and regulatory issues that are driving the requirements for these solutions and presents various data center topologies that customers are choosing when impleme... View full abstract»

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  • Three reliability engineering techniques and their application to evaluating the availability of IT systems: An introduction

    Publication Year: 2008, Page(s):577 - 589
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (368 KB)

    We present a brief introduction to three reliability engineering techniques: failure mode, effects, and criticality analysis; reliability block diagrams; and fault tree analysis. We demonstrate the use of one of these techniques, reliability block diagrams, in evaluating the availability of information technology (IT) systems through a case study involving an IT system supported by a three-tier We... View full abstract»

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  • Leveraging virtualization to optimize high-availability system configurations

    Publication Year: 2008, Page(s):591 - 604
    Cited by:  Papers (17)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (384 KB)

    Leveraging redundant resources is a common means of addressing availability requirements, but it often implies redundant costs as well. At the same time, virtualization technologies promise cost reduction through resource consolidation. Virtualization and high-availability (HA) technologies can be combined to optimize availability while minimizing costs, but merging them properly introduces new ch... View full abstract»

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  • From high availability and disaster recovery to business continuity solutions

    Publication Year: 2008, Page(s):605 - 619
    Cited by:  Papers (2)  |  Patents (5)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (564 KB)

    We first provide an overview of the state-of-the-art architectures for continuous availability, briefly covering such traditional concepts as high-availability (HA) clustering on distributed platforms and on the mainframe. We explain how HA can be achieved in environments based on Sun Microsystems J2EE™, which differ from classical clustering approaches, and we discuss how disaster recovery... View full abstract»

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  • Availability analysis of blade server systems

    Publication Year: 2008, Page(s):621 - 640
    Cited by:  Papers (16)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1290 KB)

    The successful development and marketing of commercial high-availability systems requires the ability to evaluate the availability of systems. Specifically, one should be able to demonstrate that projected customer requirements are met, to identify availability bottlenecks, to evaluate and compare different configurations, and to evaluate and compare different designs. For evaluation approaches ba... View full abstract»

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  • The resiliency challenge presented by soft failure incidents

    Publication Year: 2008, Page(s):641 - 652
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (257 KB)

    A common problem observed on mainframe installations, and one which presents a significant challenge for resiliency and high availability, involves soft failure incidents. n contrast to catastrophic failures, soft failures involve some degree of system shutdown without an obvious cause. This has been described with the phrase: “Systems don't break; they just stop running, and we don't know ... View full abstract»

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  • Scoring and thresholding for availability

    Publication Year: 2008, Page(s):665 - 666
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (439 KB)

    As the capacity of hardware systems has grown and workload consolidation has taken place, the volume of performance metrics and diagnostic data streams has outscaled the capability of people to handle these systems using traditional methods. As work of different types (such as database, batch, and Web processing), each in its own monitoring silo, runs concurrently on a single image (operating syst... View full abstract»

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  • Enhancing availability with service automation and a trusted support partner

    Publication Year: 2008, Page(s):667 - 680
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1169 KB)

    Since the onset of the computer age, customers have been searching for ways to increase systems availability, maximizing the return on their investment and keeping their systems running continuously as much as possible. Traditionally, customers have used a combination of hardware and software architecture and processes in an attempt to address their continuous availability needs. In this paper, we... View full abstract»

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  • IBM TotalStorage Productivity Center for Replication for z/OS

    Publication Year: 2008, Page(s):681 - 694
    Cited by:  Patents (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (473 KB)

    Designing and implementing a business resilience (or disaster recovery) plan is a complex procedure for customers, and the impact of implementing an incorrect or incomplete plan can be significant. For some customers, being able to recover their data center functionality in a short period of time may be of the utmost importance; for others, recovering in a short period of time may be worthless if ... View full abstract»

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  • Data center topologies for mission-critical business systems

    Publication Year: 2008, Page(s):695 - 706
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (491 KB)

    In this paper we examine the ways in which data center topology choices affect mission-critical business system availability and we propose a methodology for ensuring business resilience by assessing the risks to the mission-critical business systems and then designing a data center topology to mitigate these risks. This methodology is based on the IBM Business Resilience Framework, a framework th... View full abstract»

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  • Contents of Volume 47, 2008

    Publication Year: 2008, Page(s):707 - 708
    IEEE is not the copyright holder of this material | PDF file iconPDF (32 KB)
    Freely Available from IEEE
  • Errata

    Publication Year: 2008, Page(s): 709
    IEEE is not the copyright holder of this material | PDF file iconPDF (33 KB)
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Aims & Scope

Throughout its history, the IBM Systems Journal has been devoted to software, software systems, and services, focusing on concepts, architectures, and the uses of software.

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
John J. Ritsko
IBM T. J. Watson Research Center5