Patent ID: 8719620

Claim:
A storage control apparatus used by a higher-level apparatus, comprising: a controller, and multiple storage devices controlled by this controller, wherein the multiple storage devices configure a parity group, which enables data restoration by parity, the storage control apparatus further comprising: a blocking process part for blocking a prescribed storage device from among the multiple storage devices; a management information storage part for storing management information for managing, for each of the storage devices, a prescribed area having data from a higher-level apparatus from among the storage areas of the storage devices that are provided in the respective multiple storage devices and at a provided destination; a determination part for determining whether a storage area of the prescribed storage device is a data area or a parity area for each stripe line of the parity group; if it is determined that the storage area is a data area, obtaining management information for a parity area corresponding to the data area from the management information storage part, and determining whether the data area is the prescribed area based on the management information for the parity area and a prescribed determination criterion; if it is determined that the storage area is a parity area, obtaining management information for the data area corresponding to the parity area from the management information storage part, and determining whether the parity area is the prescribed area based on the management information for the data area and a prescribed determination criterion; and a rebuild control part for executing a rebuild process with respect to an area determined to be the prescribed area from among the storage areas of the prescribed storage device.