Beyond Redundancy Book by Eric Bauer at Bookstore - Bookswagon
Book 1
Book 2
Book 3
Book 1
Book 2
Book 3
Book 1
Book 2
Book 3
Book 1
Book 2
Book 3
Home > Science, Technology & Agriculture > Electronics and communications engineering > Beyond Redundancy: How Geographic Redundancy Can Improve Service Availability and Reliability of Computer-Based Systems
Beyond Redundancy: How Geographic Redundancy Can Improve Service Availability and Reliability of Computer-Based Systems

Beyond Redundancy: How Geographic Redundancy Can Improve Service Availability and Reliability of Computer-Based Systems


     0     
5
4
3
2
1



International Edition


X
About the Book

While geographic redundancy can obviously be a huge benefit for disaster recovery, it is far less obvious what benefit is feasible and likely for more typical non-catastrophic hardware, software, and human failures. Georedundancy and Service Availability provides both a theoretical and practical treatment of the feasible and likely benefits of geographic redundancy for both service availability and service reliability. The text provides network/system planners, IS/IT operations folks, system architects, system engineers, developers, testers, and other industry practitioners with a general discussion about the capital expense/operating expense tradeoff that frames system redundancy and georedundancy.

Table of Contents:
Figures xv Tables xix Equations xxi Preface and Acknowledgments xxiii Audience xxiv Organization xxiv Acknowledgments xxvi PART 1 BASICS 1 1 SERVICE, RISK, AND BUSINESS CONTINUITY 3 1.1 Service Criticality and Availability Expectations 3 1.2 The Eight-Ingredient Model 4 1.3 Catastrophic Failures and Geographic Redundancy 7 1.4 Geographically Separated Recovery Site 11 1.5 Managing Risk 12 1.6 Business Continuity Planning 14 1.7 Disaster Recovery Planning 15 1.8 Human Factors 17 1.9 Recovery Objectives 17 1.10 Disaster Recovery Strategies 18 2 SERVICE AVAILABILITY AND SERVICE RELIABILITY 20 2.1 Availability and Reliability 20 2.2 Measuring Service Availability 25 2.3 Measuring Service Reliability 33 PART 2 MODELING AND ANALYSIS OF REDUNDANCY 35 3 UNDERSTANDING REDUNDANCY 37 3.1 Types of Redundancy 37 3.2 Modeling Availability of Internal Redundancy 44 3.3 Evaluating High-Availability Mechanisms 52 4 OVERVIEW OF EXTERNAL REDUNDANCY 59 4.1 Generic External Redundancy Model 59 4.2 Technical Distinctions between Georedundancy and Co-Located Redundancy 74 4.3 Manual Graceful Switchover and Switchback 75 5 EXTERNAL REDUNDANCY STRATEGY OPTIONS 77 5.1 Redundancy Strategies 77 5.2 Data Recovery Strategies 79 5.3 External Recovery Strategies 80 5.4 Manually Controlled Recovery 81 5.5 System-Driven Recovery 83 5.6 Client-Initiated Recovery 85 6 MODELING SERVICE AVAILABILITY WITH EXTERNAL SYSTEM REDUNDANCY 98 6.1 The Simplistic Answer 98 6.2 Framing Service Availability of Standalone Systems 99 6.3 Generic Markov Availability Model of Georedundant Recovery 103 6.4 Solving the Generic Georedundancy Model 115 6.5 Practical Modeling of Georedundancy 121 6.6 Estimating Availability Benefit for Planned Activities 130 6.7 Estimating Availability Benefit for Disasters 131 7 UNDERSTANDING RECOVERY TIMING PARAMETERS 133 7.1 Detecting Implicit Failures 134 7.2 Understanding and Optimizing RTO 141 8 CASE STUDY OF CLIENT-INITIATED RECOVERY 147 8.1 Overview of DNS 147 8.2 Mapping DNS onto Practical Client-Initiated Recovery Model 148 8.3 Estimating Input Parameters 154 8.4 Predicted Results 165 8.5 Discussion of Predicted Results 172 9 SOLUTION AND CLUSTER RECOVERY 174 9.1 Understanding Solutions 174 9.2 Estimating Solution Availability 177 9.3 Cluster versus Element Recovery 179 9.4 Element Failure and Cluster Recovery Case Study 182 9.5 Comparing Element and Cluster Recovery 186 9.6 Modeling Cluster Recovery 187 PART 3 RECOMMENDATIONS 201 10 GEOREDUNDANCY STRATEGY 203 10.1 Why Support Multiple Sites? 203 10.2 Recovery Realms 204 10.3 Recovery Strategies 206 10.4 Limp-Along Architectures 207 10.5 Site Redundancy Options 208 10.6 Virtualization, Cloud Computing, and Standby Sites 216 10.7 Recommended Design Methodology 217 11 MAXIMIZING SERVICE AVAILABILITY VIA GEOREDUNDANCY 219 11.1 Theoretically Optimal External Redundancy 219 11.2 Practically Optimal Recovery Strategies 220 11.3 Other Considerations 228 12 GEOREDUNDANCY REQUIREMENTS 230 12.1 Internal Redundancy Requirements 230 12.2 External Redundancy Requirements 233 12.3 Manually Controlled Redundancy Requirements 235 12.4 Automatic External Recovery Requirements 237 12.5 Operational Requirements 242 13 GEOREDUNDANCY TESTING 243 13.1 Georedundancy Testing Strategy 243 13.2 Test Cases for External Redundancy 246 13.3 Verifying Georedundancy Requirements 247 13.4 Summary 254 14 SOLUTION GEOREDUNDANCY CASE STUDY 256 14.1 The Hypothetical Solution 256 14.2 Standalone Solution Analysis 259 14.3 Georedundant Solution Analysis 263 14.4 Availability of the Georedundant Solution 269 14.5 Requirements of Hypothetical Solution 269 14.6 Testing of Hypothetical Solution 277 Summary 285 Appendix: Markov Modeling of Service Availability 292 Acronyms 296 References 298 About the Authors 300 Index 302

About the Author :
Eric Bauer is Reliability Engineering Manager in the IMS Solutions Organization of Alcatel-Lucent, where he focuses on reliability of Alcatel-Lucent's IMS solution and the network elements that comprise the IMS solution. He has written Design for Reliability: Information and Computer-Based Systems and Practical System Reliability. Randee Adams is a Consulting Member of Technical Staff in the Applications Group of Alcatel-Lucent. Currently, she is focusing on reliability for Alcatel-Lucent's software applications. Daniel Eustace is a Distinguished Member of Technical Staff in the IMS Solutions Organization of Alcatel-Lucent. Currently, he is a solution architect focusing on reliability, key quality indicators, geographical redundancy, and call processing.


Best Sellers


Product Details
  • ISBN-13: 9781118038291
  • Publisher: John Wiley & Sons Inc
  • Publisher Imprint: Wiley-IEEE Press
  • Height: 243 mm
  • No of Pages: 330
  • Returnable: N
  • Sub Title: How Geographic Redundancy Can Improve Service Availability and Reliability of Computer-Based Systems
  • Width: 165 mm
  • ISBN-10: 1118038290
  • Publisher Date: 02 Dec 2011
  • Binding: Hardback
  • Language: English
  • Returnable: N
  • Spine Width: 22 mm
  • Weight: 616 gr


Similar Products

Add Photo
Add Photo

Customer Reviews

REVIEWS      0     
Click Here To Be The First to Review this Product
Beyond Redundancy: How Geographic Redundancy Can Improve Service Availability and Reliability of Computer-Based Systems
John Wiley & Sons Inc -
Beyond Redundancy: How Geographic Redundancy Can Improve Service Availability and Reliability of Computer-Based Systems
Writing guidlines
We want to publish your review, so please:
  • keep your review on the product. Review's that defame author's character will be rejected.
  • Keep your review focused on the product.
  • Avoid writing about customer service. contact us instead if you have issue requiring immediate attention.
  • Refrain from mentioning competitors or the specific price you paid for the product.
  • Do not include any personally identifiable information, such as full names.

Beyond Redundancy: How Geographic Redundancy Can Improve Service Availability and Reliability of Computer-Based Systems

Required fields are marked with *

Review Title*
Review
    Add Photo Add up to 6 photos
    Would you recommend this product to a friend?
    Tag this Book Read more
    Does your review contain spoilers?
    What type of reader best describes you?
    I agree to the terms & conditions
    You may receive emails regarding this submission. Any emails will include the ability to opt-out of future communications.

    CUSTOMER RATINGS AND REVIEWS AND QUESTIONS AND ANSWERS TERMS OF USE

    These Terms of Use govern your conduct associated with the Customer Ratings and Reviews and/or Questions and Answers service offered by Bookswagon (the "CRR Service").


    By submitting any content to Bookswagon, you guarantee that:
    • You are the sole author and owner of the intellectual property rights in the content;
    • All "moral rights" that you may have in such content have been voluntarily waived by you;
    • All content that you post is accurate;
    • You are at least 13 years old;
    • Use of the content you supply does not violate these Terms of Use and will not cause injury to any person or entity.
    You further agree that you may not submit any content:
    • That is known by you to be false, inaccurate or misleading;
    • That infringes any third party's copyright, patent, trademark, trade secret or other proprietary rights or rights of publicity or privacy;
    • That violates any law, statute, ordinance or regulation (including, but not limited to, those governing, consumer protection, unfair competition, anti-discrimination or false advertising);
    • That is, or may reasonably be considered to be, defamatory, libelous, hateful, racially or religiously biased or offensive, unlawfully threatening or unlawfully harassing to any individual, partnership or corporation;
    • For which you were compensated or granted any consideration by any unapproved third party;
    • That includes any information that references other websites, addresses, email addresses, contact information or phone numbers;
    • That contains any computer viruses, worms or other potentially damaging computer programs or files.
    You agree to indemnify and hold Bookswagon (and its officers, directors, agents, subsidiaries, joint ventures, employees and third-party service providers, including but not limited to Bazaarvoice, Inc.), harmless from all claims, demands, and damages (actual and consequential) of every kind and nature, known and unknown including reasonable attorneys' fees, arising out of a breach of your representations and warranties set forth above, or your violation of any law or the rights of a third party.


    For any content that you submit, you grant Bookswagon a perpetual, irrevocable, royalty-free, transferable right and license to use, copy, modify, delete in its entirety, adapt, publish, translate, create derivative works from and/or sell, transfer, and/or distribute such content and/or incorporate such content into any form, medium or technology throughout the world without compensation to you. Additionally,  Bookswagon may transfer or share any personal information that you submit with its third-party service providers, including but not limited to Bazaarvoice, Inc. in accordance with  Privacy Policy


    All content that you submit may be used at Bookswagon's sole discretion. Bookswagon reserves the right to change, condense, withhold publication, remove or delete any content on Bookswagon's website that Bookswagon deems, in its sole discretion, to violate the content guidelines or any other provision of these Terms of Use.  Bookswagon does not guarantee that you will have any recourse through Bookswagon to edit or delete any content you have submitted. Ratings and written comments are generally posted within two to four business days. However, Bookswagon reserves the right to remove or to refuse to post any submission to the extent authorized by law. You acknowledge that you, not Bookswagon, are responsible for the contents of your submission. None of the content that you submit shall be subject to any obligation of confidence on the part of Bookswagon, its agents, subsidiaries, affiliates, partners or third party service providers (including but not limited to Bazaarvoice, Inc.)and their respective directors, officers and employees.

    Accept


    Inspired by your browsing history


    Your review has been submitted!

    You've already reviewed this product!