An Efficient File Assignment Strategy for Hybrid Parallel Storage System with Energy & Reliability Constraints

In this work, we are interested in the file assignment problem in a distributed file system. We adopt a hybrid parallel storage system consisting of hard and flash disks, and then address the problem of minimizing the system’s mean response time by determining the distribution of the files in the system. In addition, energy efficiency and system reliability are all taken into consideration and regarded as the system constraints. Due to the complexity of the problem, we propose our Two Stage File Assignment algorithm (TSFA) to find an optimized solution with predefined constraints. The efficiency of our algorithm is verified by extensive experiments.