| 摘要 |
A distributed storage system implements highspeed data reconstitution processing while ensuring a high security level. Devices (63) in a device group (51) with security level "low" distributedly store fragmented data. When a process requesting device (60) belonging to a device group (50) with security level "high" instructs devices (62) belonging to the same group to reconstitute the data, the devices (62) collect and reconstitute part of the fragmented and stored data. After that, the process requesting device (60) collects the data partially reconstituted by the devices (62) and completely reconstitutes the data.
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