Journal ArticleDOI
Enterprise architecture availability analysis using fault trees and stakeholder interviews
TLDR
The cost of performing the analysis was low; no case study required more than 20 man-hours of work, making the method ideal for practitioners with an interest in obtaining rapid availability estimates of their enterprise information systems.Abstract:
The availability of enterprise information systems is a key concern for many organisations. This article describes a method for availability analysis based on Fault Tree Analysis and constructs from the ArchiMate enterprise architecture EA language. To test the quality of the method, several case-studies within the banking and electrical utility industries were performed. Input data were collected through stakeholder interviews. The results from the case studies were compared with availability of log data to determine the accuracy of the method's predictions. In the five cases where accurate log data were available, the yearly downtime estimates were within eight hours from the actual downtimes. The cost of performing the analysis was low; no case study required more than 20 man-hours of work, making the method ideal for practitioners with an interest in obtaining rapid availability estimates of their enterprise information systems.read more
Citations
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Journal ArticleDOI
Book Review: Design and Analysis of Fault-Tolerant Digital SystemsDesign and Analysis of Fault-Tolerant Digital Systems: JohnsonB. W. (Addison Wesley, 1989, 577 pp., £41.35)
TL;DR: This book is mainly oriented towards a final year undergraduate course on fault-tolerant computing, primarily with an implementation bias, and draws considerably on the author's experience in industry, particularly reflected in the projects accompanying chapter 5.
Journal ArticleDOI
Using enterprise architecture artefacts in an organisation
Eetu Niemi,Samuli Pekkola +1 more
TL;DR: Using the features of information systems use studies and data from a case study with 14 EA stakeholder interviews, 15 EA artefact use situations are identified and described, resulting in a theoretical framework for understanding their use in general.
Journal ArticleDOI
The value of and myths about enterprise architecture
Yiwei Gong,Marijn Janssen +1 more
TL;DR: Enterprise Architecture myths are identified that are attributable to an overly simplistic conceptualization of EA and demystified by analysing the context-dependent mechanisms behind EA that result in value creation and developing rigorous evidence-based approaches to better understand EA.
Journal ArticleDOI
Optimal IT Service Availability: Shorter Outages, or Fewer?
TL;DR: A framework within which to think about availability management is offered, highlighting the importance of variance of outage costs, and more but shorter outages should be preferred to fewer but longer outages in order to minimize variance.
References
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Book
Case Study Research: Design and Methods
TL;DR: In this article, buku ini mencakup lebih dari 50 studi kasus, memberikan perhatian untuk analisis kuantitatif, membahas lebah lengkap penggunaan desain metode campuran penelitian, and termasuk wawasan metodologi baru.
Case Study Research Design And Methods
TL;DR: The case study research design and methods is universally compatible with any devices to read and is available in the book collection an online access to it is set as public so you can download it instantly.
Journal ArticleDOI
The DeLone and McLean Model of Information Systems Success: A Ten-Year Update
TL;DR: This paper discusses many of the important IS success research contributions of the last decade, focusing especially on research efforts that apply, validate, challenge, and propose enhancements to the original model.
Book
Markov Chains and Stochastic Stability
Sean P. Meyn,Richard L. Tweedie +1 more
TL;DR: This second edition reflects the same discipline and style that marked out the original and helped it to become a classic: proofs are rigorous and concise, the range of applications is broad and knowledgeable, and key ideas are accessible to practitioners with limited mathematical background.
Book
Bayesian networks and decision graphs
TL;DR: The book introduces probabilistic graphical models and decision graphs, including Bayesian networks and influence diagrams, and presents a thorough introduction to state-of-the-art solution and analysis algorithms.