STORAGE CONTROLLER, CONTROL METHOD, AND COMPUTER PRODUCT

摘要

A storage controller that performs control for storing in memory areas of a storage device, data that is grouped into redundant data in blocks each having a given data size. The storage controller includes a memory unit configured to store therein group information created by grouping performed such that logical addresses for a writing destination identified from a data writing request are correlated with the blocks; and a control unit configured to count in response to a data reading request, number of times of reading from a group including logical addresses for a reading destination identified from the reading request, based on the group information, and issues any one among a reading request that includes the logical addresses for the reading destination and a reading request that includes logical addresses for a memory destination of redundant data corresponding to data of the logical addresses for the reading destination.

主权项

1. A storage controller that performs control for storing in memory areas of a storage device, data that is grouped into redundant data in blocks each having a given data size, the storage controller comprising:
a memory unit configured to store therein group information created by grouping performed such that logical addresses for a writing destination identified from a data writing request are correlated with the blocks; and a control unit configured to count in response to a data reading request, number of times of reading from a group including logical addresses for a reading destination identified from the reading request, based on the group information, and issues any one among a reading request that includes the logical addresses for the reading destination and a reading request that includes logical addresses for a memory destination of redundant data corresponding to data of the logical addresses for the reading destination.