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We propose a guideline for data placement in heterogeneous distributed storage systems. Heterogeneous distributed storage systems sometimes cause degradation of aggregate data throughput. The proposed guideline is that data accessed by a client should be placed equally to all servers. We evaluate a storage system configured by the proposed guideline by(More)
When large-scale disasters occur, such as the Great East Earthquake Japan occurred in March 2011, servers located in the affected area are sometimes disrupted. If the servers has important information, such as medical information, it is crucial to restore the servers because the information is utilized by medical activities. Therefore, the servers must be(More)
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