| 摘要 |
<p>Provided is a file server apparatus 4 that processes files stored in a plurality in response to an I/O request when entity data of a plurality of files has a common portion, generates a consolidation file that holds common entity data as consolidated data; and manages each of the plurality of files as a de-duplication file that does not hold the consolidated data, and, when there is the I/O request to at least one of the plurality of files, acquires the consolidated data and processes in response to the I/O request to at least one of the plurality of files, and holds difference data generated by performing processing in response to the I/O request including referring to the consolidation file, and whenever a predetermined timing comes, the file server apparatus determines a load balancing method according to a dependency obtained, for each of the de-duplication files, from a ratio of a data amount of the difference data of each of the de-duplication file with respect to a data amount of the consolidated data, and distributes into the plurality of volumes in accordance with the determined load balancing method, data of the file.</p> |
