Data access system and data access method

A data access system comprising:

• a first information processing apparatus:
• and a second information processing apparatus, wherein the first information processing apparatus includes a storage device
• configured to store a plurality of division data, into which processing target data is divided, in a plurality of positions,
• the second information processing apparatus includes a first storage unit configured to store storage position information of the respective division data of the storage device and configuration information for restoring the processing target data from the division data, and
• the configuration information is not stored in the first information processing apparatus,
• the first information processing apparatus further includes:
• a second storage unit configured to store attribute information about the division data stored in the corresponding storage positions in association with the storage positions of the storage device;
• a determination unit configured perform determination processing based on collation information transmitted from the second information processing apparatus and the attribute information, upon reception of a request for access to the storage device from the second information processing apparatus;
• and
• a prohibition unit configured to prohibit the access to the storage device when it is determined that mismatching is detected by the determination unit.

A data access method of a data access system, which includes a first information processing apparatus with a storage device, and a second information processing apparatus, the data access method comprising:

• storing, by the first information processing apparatus, a plurality of division data, into which processing target data is divided, in a plurality of positions of the storage device,
• storing, by the second information processing apparatus, storage position information of the respective division data of the storage device and configuration information for restoring the processing target data from the division data,
• transmitting, by the second information processing apparatus, to the first information processing apparatus, the division data to which the storage position information indicating the storage position of the division data is added, when the processing target data is written from the second information processing apparatus to the storage device,
• storing, by the first information processing apparatus, the received division data in the storage device according to the storage position information
• transmitting, by the second information processing apparatus, a storage position securement request to the first information processing apparatus when the processing target data is written from the second information processing apparatus to the storage device,
• notifying, by the first information processing apparatus, the second information processing apparatus of a plurality of storage positions selected from the storage device in response to the storage position securement request, and
• allocating, by the second information processing apparatus, the division data to the plurality of notified storage positions, respectively,
• wherein the configuration information is not stored in the first information processing apparatus.

A data access method of a data access system, which includes a first information processing apparatus with a storage device, and a second information processing apparatus, the data access method comprising:

• storing, by the first information processing apparatus, a plurality of division data, into which processing target data is divided, in a plurality of positions of the storage device,
• storing, by the second information processing apparatus, storage position information of the respective division data of the storage device and configuration information for restoring the processing target data from the division data,
• storing, by the first information processing apparatus, attribute information about the division data stored in the corresponding storage positions in association with the storage positions of the storage device;
• performing, by the first information processing apparatus, determination processing based on collation information transmitted from the second information processing apparatus and the attribute information, upon reception of a request for access to the storage device from the second information processing apparatus;
• and
• prohibiting, by the first information processing apparatus, the access to the storage device when it is determined that mismatching is detected in the determination processing,
• wherein the configuration information is not stored in the first information processing apparatus.