High Availability It Services

Author: Terry Critchley
Editor: Auerbach Publications
ISBN: 9780367377939
File Size: 59,32 MB
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This book starts with the basic premise that a service is comprised of the 3Ps--products, processes, and people. Moreover, these entities and their sub-entities interlink to support the services that end users require to run and support a business. This widens the scope of any availability design far beyond hardware and software. It also increases the potential for service failure for reasons beyond just hardware and software; the concept of logical outages. High Availability IT Services details the considerations for designing and running highly available "services" and not just the systems infrastructure that supports those services. Providing an overview of virtualization and cloud computing, it supplies a detailed look at availability, redundancy, fault tolerance, and security. It also stresses the importance of human factors. The book starts off by providing an availability primer and detailing the reasons why you need to be concerned with high availability. Next, it outlines the theory of reliability and availability and the elements of actual practices in this high availability (HA) area, including Service Level Agreements (SLAs) and Change Management. Examining what the major hardware and software vendors have to offer in the HA world, the book considers the ubiquitous world of clouds and virtualization as well as the availability considerations they present. The book examines high availability concepts and architectures such as reliability, availability, and serviceability (RAS); clusters; grids; and redundant arrays of independent disks (RAID) storage. It also covers the role of security in providing high availability, cluster offerings, emergent Linux clusters, online transaction processing (OLTP), and relational databases.

Cio

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File Size: 20,56 MB
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Auug Conference Proceedings

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File Size: 34,66 MB
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High Availability And Disaster Recovery

Author: Klaus Schmidt
Editor: Springer Science & Business Media
ISBN: 3540345825
File Size: 27,12 MB
Format: PDF, Mobi
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Companies and institutions depend more than ever on the availability of their Information Technology, and most mission critical business processes are IT-based. Business Continuity is the ability to do business under any circumstances and is an essential requirement faced by modern companies. Both concepts - High Availability and Disaster Recovery - are realized by redundant systems. This book presents requirements, concepts, and realizations of redundant systems on all abstraction levels, and all given examples refer to UNIX and Linux Systems.

National Library Of Medicine Programs And Services

Author: National Library of Medicine (U.S.)
Editor:
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File Size: 38,48 MB
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End To End High Availability Solution For System Z From A Linux Perspective

Author: Lydia Parziale
Editor: IBM Redbooks
ISBN: 073844006X
File Size: 50,33 MB
Format: PDF
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As Linux on System z becomes more prevalent and mainstream in the industry, the need for it to deliver higher levels of availability is increasing. This IBM Redbooks publication starts with an explanation of high availability (HA) fundamentals such as HA concepts and terminology. It continues with a discussion of why a business needs to consider an HA solution and then explains how to determine your business single points of failure. We outline the components of a high availability solution and describe these components. Then we provide some architectural scenarios and demonstrate how to plan and decide an implementation of an end-to-end HA solution, from Linux on System z database scenarios to z/OS, and include storage, network, z/VM, Linux, and middleware. This implementation includes the IBM Tivoli System Automation for Multiplatforms (TSA MP), which monitors and automates applications distributed across Linux, AIX®, and z/OS® operating systems, as well as a GDPS based solution. It includes the planning for an end-to-end scenario, considering Linux on System z, z/VM, and z/OS operating environments, and the middleware used. The TSA MP implements HA for infrastructure, network, operating systems, and applications across multiple platforms and is compared to a Linux HA implementation based on open source Linux-HA, which is Linux only.

Service Availability

Author: Miroslaw Malek
Editor: Springer Science & Business Media
ISBN: 3540727353
File Size: 25,66 MB
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Program Chairs’ Message th The 4 International Service Availability Symposium (ISAS 2007) continued with the tradition of its predecessors by bringing together researchers and practitioners from both academia and industry to address the problems of service availability. The unique characteristic of a strong academic and industrial partnership was vividly - flected in this year’s event, from the Organizing Committee to the contributions and the participants. Recognizing the value of broadening the scope of ISAS 2007, we included new topic areas that cover model-driven design and human factors. We received a total of 25 submissions, each of which was thoroughly reviewed by at least three members of the Program Committee. Due to the limited time allocated for the symposium, many worthwhile manuscripts unfortunately did not make it into the final program. Our sincere thanks go to the Program Committee for conducting a vigorous review process in a rather tight time schedule. The detailed reviews and their generous comments have shaped the contributions into an excellent program.

Pro Sharepoint Disaster Recovery And High Availability

Author: Stephen Cummins
Editor: Apress
ISBN: 1430263288
File Size: 33,64 MB
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Focuses equally on disaster prevention and then disaster response, including coverage of cloud computing and cloud availability, an area untouched by other disaster recovery/high availability titles.

High Availability Network Fundamentals

Author: Chris Oggerino
Editor: Cisco Press
ISBN: 1587130173
File Size: 34,89 MB
Format: PDF, Mobi
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A practical guide to modeling and designing reliable networks Provides a detailed introduction to modeling availability necessary for network design Helps network designers understand the theoretical availability of their topologies Explains the factors that limit availability to minimize the number of network failures Provides all the information necessary to do basic availability modeling/budgeting High Availability Network Fundamentalsdiscusses the need for and the mathematics of availability, then moves on to cover the issues affecting availability, including hardware, software, design strategies, human error, and environmental considerations. After setting up the range of common problems, it then delves into the details of how to design networks for fault tolerance and provides sample calculations for specific systems. Also included is a complete, end-to-end example showing availability calculations for a sample network.

Pro Sharepoint 2010 Disaster Recovery And High Availability

Author: Stephen Cummins
Editor: Apress
ISBN: 1430239522
File Size: 19,35 MB
Format: PDF
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Few IT professionals take the time to learn what needs to be known to do disaster recovery well. Most labor under the pretense that good administration equals close to five-nines uptime. Most technical people do not see the value of planning for disasters until the unexpected has already happened, and the effects of a disaster involving a SharePoint farm—which today houses business information, line-of-business applications, sensitive information, extranets, and other highly important assets—can be staggering. Pro SharePoint 2010 Disaster Recovery and High Availability will take you through a step-by-step process to show how to build an awareness and reaction plan for the inevitable. With a focus on real-world experiences and war stories, author Stephen Cummins weaves an expert tale of woe response and offers you: Ways to see the warning signs of disaster, and ways to avoid it Ways to respond to a disaster while it is happening Perhaps most importantly, how to develop a plan to deal with disaster when it inevitably does happen

Gartner Group Symposium Itxpo

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File Size: 21,56 MB
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System Support For Software Fault Tolerance In Highly Available Database Management Systems

Author: Mark Paul Sullivan
Editor:
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File Size: 77,67 MB
Format: PDF
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Service Availability

Author: Dave Penkler
Editor: Springer Science & Business Media
ISBN: 3540687246
File Size: 72,37 MB
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This book constitutes the thoroughly refereed post-proceedings of the Third International Service Availability Symposium, ISAS 2006, held in Helsinki, Finland, in May 2006. The 19 revised full papers presented were carefully reviewed and selected from 38 submissions. The papers are organized in topical sections on availability modeling, estimation and analysis, dependability techniques and their applications, performability: measurements and assessments, service availability standards: experience reports and futures.

Service Delivery

Author: Great Britain. Office of Government Commerce
Editor: The Stationery Office
ISBN: 9780113300174
File Size: 30,37 MB
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This book is one of a series issued as part of the updated IT Infrastructure Library that documents industry best practice for the support and delivery of IT services. Although this book can be read in isolation it is recommended that it be used in conjunction with the other IT Infrastructure Library books. Service management is a generic concept and the guidance in the new IT Infrastructure Library books is applicable generically. The guidance is also scaleable, applicable to both small and large organisations. It applies to distributed and centralised systems, whether in-house or supplied by third parties. It is neither bureaucratic nor unwieldly if implemented sensibly and in full recognition of the business needs of the organisation.

Cio

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File Size: 12,29 MB
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A resource for information executives, the online version of CIO offers executive programs, research centers, general discussion forums, online information technology links, and reports on information technology issues.

Building High Availability Windows Server 2003 Solutions

Author: Jeffrey R. Shapiro
Editor: Addison-Wesley Professional
ISBN: 9780321228789
File Size: 78,74 MB
Format: PDF, Docs
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"This is the definitive resource for every network administrator, consultant, and architect who needs to maximize availability, scalability, and performance in Windows server environments." "Shapiro and Policht offer a clear, concise roadmap for keeping Windows servers running 24x7 and delivering on even the most challenging service-level agreement. They provide real-world case studies and easy-to-use instruction designed to help readers make better decisions more rapidly."--BOOK JACKET.

Microsoft Exchange Server 2013 High Availability

Author: Nuno Mota
Editor: Packt Publishing Ltd
ISBN: 1782171517
File Size: 64,76 MB
Format: PDF, ePub, Mobi
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This book is a hands-on practical guide that provides the reader with a number of clear scenarios and examples, making it easier to understand and apply the new concepts. Each chapter can be used as a reference, or it can be read from beginning to end, allowing consultants/administrators to build a solid and highly available Exchange 2013 environment. If you are a messaging professional who wants to learn to design a highly available Exchange 2013 environment, this book is for you. Although not a definite requirement, practical experience with Exchange 2010 is expected, without being a subject matter expert.

Pro Sql Server 2005 High Availability

Author: Allan Hirt
Editor: Apress
ISBN: 9781430203742
File Size: 34,39 MB
Format: PDF, Mobi
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This book comprehensively covers the technology, the people, the process, and the real-world best practices for planning, deploying, administering, and maintaining highly available SQL Server 2005 instances. It provides in-depth, detailed advice on what it takes to assure SQL Server high availability for businesses of any size. It covers both availability and performance, from the perspective of high availability, and addresses the crucial needs of enterprise-class, 24x7 SQL Server 2005 implementations. The book is based on real-world experience. It gives sound guidance to DBAs and system administrators on how to really get the job done.

Architecting For Scale

Author: Lee Atchison
Editor: "O'Reilly Media, Inc."
ISBN: 1491943416
File Size: 14,64 MB
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Every day, companies struggle to scale critical applications. As traffic volume and data demands increase, these applications become more complicated and brittle, exposing risks and compromising availability. This practical guide shows IT, devops, and system reliability managers how to prevent an application from becoming slow, inconsistent, or downright unavailable as it grows. Scaling isn’t just about handling more users; it’s also about managing risk and ensuring availability. Author Lee Atchison provides basic techniques for building applications that can handle huge quantities of traffic, data, and demand without affecting the quality your customers expect. In five parts, this book explores: Availability: learn techniques for building highly available applications, and for tracking and improving availability going forward Risk management: identify, mitigate, and manage risks in your application, test your recovery/disaster plans, and build out systems that contain fewer risks Services and microservices: understand the value of services for building complicated applications that need to operate at higher scale Scaling applications: assign services to specific teams, label the criticalness of each service, and devise failure scenarios and recovery plans Cloud services: understand the structure of cloud-based services, resource allocation, and service distribution