Papers by Author: Li Xian Fan

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Authors: Li Xian Fan, Yong Zhao Xu, Hong Tao Li
Abstract: The datacenter of one university owns massive E-Learning resources, and how to support safe and efficient access so as to support large-scale concurrent read and write protection has troubled the administrators of the campus datacenter. In this paper, we presented our E-learning resources storage system. The resources are stored in one HDFS(HADDOP Distributed File System) based storage systems, to effectively support the E-learning scenarios as small write-once files with large-scale concurrent read scenarios. Within the System, the E-learning data can be deployed redundantly across multiple storage nodes, which are distributed so as to improve read and write speed. Furthermore, when a single data node fails the system can also be recovered by redundant node data in the system and improve system security greatly. The system supports that the desktop systems, mobile platforms and web browser can access the system with cross-platform mechanism. The system adopts encryption mechanisms through the establishment of secure storage directory, and the user terminal can encrypts and unencrypts the user-files with offline mode to guarantee the safety of user data.
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Authors: Li Xian Fan, Yong Zhao Xu, Hong Tao Li
Abstract: Virtualization technology has revolted the computer technology. In the paper, we present our virtual computer cluster. The components of computer cluster have been improved by virtualization technology from the actual computer server to virtual server instance. Virtual computer cluster includes front-end machine and the cluster nodes. The front-end machine can be physical machines or virtual machines; the cluster node can also be virtual or physical machine node. The front-end machine of the cluster communicates with the cluster nodes through physical or virtual network adapter. The front-end machine connects with the cluster management software in each node so as to monitor and control every physical or virtual node within the cluster. A single virtual computer cluster extends its resources with adding physical or virtual resources including computing resources, storage resources and etc. within secure and stabile occasions with special needs. The technology can be widely applied to cluster and parallel computing demand but with lower-cost system design scenarios.
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