METHOD FOR IMPROVING AVAILABILITY OF CLOUD STORAGE FEDERATION ENVIRONMENT

摘要

The present invention relates to a method for improving availability of a cloud storage federation environment and an application program therefor. A method for improving availability of a cloud storage federation including at least one cloud storage, the method comprising: collecting log data of each cloud storage from a provider of the at least one cloud storage to generate an integrated log; Calculating quantitative analysis availability score of each cloud storage using error information and log information, calculating qualitative analysis availability score of each cloud storage using an error code or an error message included in the integrated log, Analyzing the quantitative analysis availability score and the qualitative analysis availability score to determine an optimal storage corresponding to an important file whose frequency of use is equal to or greater than a reference value and copying the important file to the optimum storage, . According to the present invention, the availability of a cloud storage federation environment can be improved by storing large files in erased coded data in cost-effective cloud storage while copying small files or metadata to a plurality of high-performance cloud storage have.