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The VM (Virtual Machine) incremental image is not fit for saving virtual computing environment because it may cause crazy disk space increase of virtual machines. This paper analyzes the process of constructing user-specific virtual computing environment on IaaS (Infrastructure as a Service) platform, and proposes a novel method based on application virtualization to save and reuse user-specific virtual...
Creating backup copies is the most commonly used technique to protect from data loss. In order to increase reliability, doing routinely backup is a best practice. Such backup activities will create multiple redundant data streams which is not economic to be directly stored on disk. Similarly, enterprise archival systems usually deal with redundant data, which needs to be stored for later accessing...
To improve the I/O performance of servers, replacing Hard Disk Drives (HDD) with Solid State Drives (SSD) may be the best way, for SSDs have higher throughput than HDDs in terms of write and read, especially for random access pattern. But the cost per gigabytes (GB) of SSDs is ten or more times higher than that of HDDs. So constructing storage system with HDDs and SSDs is a practical way to improve...
Because of the bottleneck of disk I/O, the distributed file system based on disk is limited in the performance on data throughput and latency. It is a big challenge for such a system to meet the high performance requirement of the massive small-file storage. Cache has been widely used in storage system to improve the data access performance. In order to support the storage of massive small files,...
With the development of network infrastructure and grid technology, a large quantity of file resources are required to be accessed and shared especially in scientific area. However the heterogeneous characteristic of these file resources brings a big challenge to programmer. We have designed and implemented the File Resource Broker (FRB), a light-weight and easy-to-use system for integrating heterogeneous...
Data is becoming more and more important in the current computing environment and enterprise application. In the grid, many systems and middleware aim to hide the heterogeneity of the data resources and to provide a unified way to access them. However, there are a few systems focusing on data integration which means combining structured and unstructured data residing at different data resources and...
We have designed and implemented the Zetta data storage system (ZettaDS), a light-weight scalable distributed data storage system for cluster. While sharing many common characters with some of modern distributed data storage systems such as single meta server architecture, running on inexpensive commodity components, our system is a very light-weight one and aims to handle lots of small files efficiently...
As the evolution of applications, software systems become more and more complex. However, it is a challenge to deliver easy-to-use and reliable large-scale distributed software systems. This paper first reviews current requirements on software systems and the progress made and then reports our effort in delivering a more usable and reliable large-scale distributed software development framework (iFrame)...
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