A Novel Reliability Model for Information Technology Web services

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| 2016

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 52597 (01)
University: Sharif University of Technology
Department: Industrial Engineering
Advisor(s): Fatahi Valilai, Omid
Abstract:
The Internet is often used for communication-based applications such as online banking, stock trading, and shopping where service interruption is unacceptable. Thus, analysis of the impact of the failures of hardware, software, and related services’ performance quality of the service provided to users is of importance to designers and managers in these functions. In this study, we developed a strategy to the design of a dynamic combination of file servers with the aim of providing reliability and SLA. At first, we examine the reasons for the violation of service level in file host services and datacenters, and then we introduce the criteria to measure the violation of service level on the file servers. Then, we convert the problem of dynamic composition of file servers into four sub-problems. These include anticipating, identifying, selecting, and assigning. Afterwards, we discuss ways to solve each of the four sub-problems. Subsequently, we have implemented the approach on the servers of a file host service and have shown that this approach works better in the criteria for the service levels than before
Keywords:
Invariance ; Service Level Agreement ; Server Resources Allocation ; File Host Services ; File Server

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