A Secure File Allocation Algorithm for Heterogeneous Distributed Systems

In this study we develop a secure allocating processing(SAP) algorithm for the S-FAS scheme [13] to improve the security level and consider its performance using the heterogeneous feature of a large distributed system. The SAP allocation algorithm considers load balancing, delayed effects caused by the workload variance of many consecutive requests, and the heterogeneous feature of the storage nodes in the system. We develop a prototype using the multi-threading technique for the S-FAS scheme with the SAP algorithm to guide the file allocation. We did some experiments and the results show that the proposed solution can not only improve the security level, but also improve the throughput of the distributed storage system with heterogeneous vulnerabilities by using the multi-thread technique.