A storage control apparatus is provided that comprises a failure monitoring unit arranged to add points in proportion to detected abnormality to find statistically added points for each of N disk devices, the failure monitoring unit issuing an instruction to re-create parity when the statistically added points come closer to a predefined failure determination point, the failure monitoring unit issuing an instruction to disconnect the failed disk device when the statistically added points exceed the failure determination point; and a parity re-creation unit arranged, when receiving the instruction to re-create parity from the failure monitoring unit, to read the plural pieces of user data from (N-1) disk devices to re-calculate parity data for write into the remaining one (1) disk device for each of all addresses of the plurality of disk devices.