Performance Evaluation of Online Backup Cloud Storage

Performance Evaluation of Online Backup Cloud Storage

Xiao Zhang (School of Computer Science, Northwestern Polytechnical University, Xi’an, China), WenXiong Feng (School of Computer Science, Northwestern Polytechnical University, Xi’an, China) and Xiao Qin (Department of Computer Science and Software Engineering, Auburn University, Auburn, AL, USA)
Copyright: © 2013 |Pages: 14
DOI: 10.4018/ijcac.2013070102
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Cloud storage provides storage services to users via Internet. They provide lavish interfaces for different applications. Online backup is the most developed application based on cloud storage. Most past studies focus on functional characters and price per GB. But there is not much consideration about performance evaluation. In this paper, the authors present a method to evaluate the performance of different online backup services with clients. Because these clients do not prompt when the download/upload process starts and finishes, the authors capture the packets transferred between clients and the cloud storage provider. The authors evaluate the performance from the view of the end-user, comparing the upload and download speeds of different services. This method can help users find the best provider to accommodate their situation. The authors evaluate the performance of several cloud storage providers by analyzing the performance of different vendors in different times and different file type and size. From the performance results, the authors can expose which technologies are used in the cloud storage system to reduce the storage and network cost.
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The cloud storage market is now crowded with different service providers. There are plenty of services to choose from. Many articles introduced how to choose new cloud storage services. Vince compared the most well known cloud storage providers, including Dropbox, SkyDrive, SugarSync, and (Cloud storage comparison, n.d.). He compared the capacity and functionality of different providers. And there is a comparison of 51 different online backup services (Wikipedia, n.d.). Most of these studies compare the free and paid space, support platform, convenience, and security.

Too many think of cloud storage as just another or the next type of storage. As usual with this view, it is associated with a view that the “next” storage type is bigger, faster and cheaper. As such, proponents of this view generally believe that access via traditional approaches, like WebDAV, NFS, CIFS, and others, is a critical capability (Cloud Storage Strategy, 2009). Performance is an important factor for storage devices. Cloud storage providers offer abundant interfaces for different purposes (e.g., REST, File System, SQL like query). However, the novel interfaces (usually neither SQL nor POSIX), elasticity, and new use cases of cloud serving systems motivate a new benchmark.

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