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- Type of Document: Ph.D. Dissertation
- Language: Farsi
- Document No: 53300 (19)
- University: Sharif University of Technology
- Department: Computer Engineering
- Advisor(s): Habibi, Jafar
- Abstract:
- In cloud federation, a number of cloud service providers (CSP) interoperate to rent each other's computing resources. When a CSP finds a lack in its resources, it can use other CSPs' spare resources for its jobs. This way, the number of physical resources needed by CSPs decreases, since they don't need a pessimistic forecast for resource provision. In this thesis, we analyze possibility of such federation from an architectural viewpoint and then, propose a model to realize such federation. First, we study architectural requirements of cloud federation. A number of important requirements are gathered from previous work. These requirements are then categorized and prioritized, showing that availability, performance and security are the important requirement categories in cloud federation. Then, we introduce a model for enabling this federation. For this end, we propose the concept of virtual cloud service provider, which has no physical resource by itself and delegates its users' requests to other CSPs. By conducting a mathematical analysis as well as an evaluation on datasets from Amazon EC2 spot prices, Microsoft Azure and BitBrains data center, we show that the virtual cloud service provider can leverage considerable resources and expose them to its users with an acceptable price, while providing proper SLAs for them. When the concept of virtual cloud service provider and its feasibility is shown, we can find it as a way to create a cloud federation
- Keywords:
- Cloud Computing ; Service Level Agreement ; Software Architecture ; Spot Prices ; Cloud Federation
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