Patent ID: 8037245
Filing Date: 2011-10-11
Classification: G06F

Abstract:
1. A storage system, comprising: a storage group including a plurality of storage devices; a write controlling portion for dividing write-targeted data into a plurality of data units, and for writing to the storage group, wherein each of the plurality of data units includes data of a prescribed size; and a restore controlling portion for restoring a data element, each of the plurality of data units including a plurality of data elements, wherein a group storage area, which is a storage area of the storage group, includes a plurality of rows of sub-storage areas, wherein respective rows of the sub-storage areas span the plurality of storage devices, and each respective row includes a plurality of sub-storage areas corresponding to the plurality of storage devices, wherein for a data unit of the plurality of data units, a size of the data unit is smaller than a size of one row of the sub-storage areas, wherein the write controlling portion: wherein if multiple-failure data, which is a data unit comprising a first unreadable data element and a second unreadable data element, exists in the storage group, the restore controlling portion: wherein the write controlling portion: wherein the restore controlling portion: