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Cloud computing is an increasingly popular paradigm for accessing computing resources. A popular class of computing clouds is Infrastructure as a Service (IaaS) clouds, exemplified by Amazon's Elastic Computing Cloud (EC2). In these clouds, users are given access to virtual machines on which they can install and run arbitrary software, including database systems. Users can also deploy database appliances on these clouds, which are virtual machines with pre-installed pre-configured database systems. Deploying database appliances on IaaS clouds and performance tuning and optimization in this environment introduce some interesting research challenges. This paper presents some of these challenges, and the paper outlines the tools and techniques required to address them.
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