Patent ID: 8760983

Claim:
An information recording apparatus comprising: a divider configured to divide recording data into a plurality of recording data blocks for each predetermined recording unit; a generator configured to set, as a first block set, n recording data blocks recorded in corresponding areas in file system management areas of n, first to nth (n: integer, n≧2) storages, and generate first parity data from the n recording data blocks forming the first block set; and a recorder configured to record the n recording data blocks forming the first block set in first areas in the file system management areas of the n storages out of corresponding first areas in the file system management areas of the n storages and one storage, and record the first parity data in the first area in the file system management area of the one storage, wherein the generator is configured to extract, from the plurality of recording data blocks, n recording data blocks for forming the first block set, and configured to, when m (m: integer, m≧1) recording data blocks smaller in number than the n recording data blocks remain, generate temporary parity data based on the remaining m recording data blocks, and the recorder is configured to record the remaining m recording data blocks in corresponding second areas in the file system management areas of m storages out of the n storages, out of corresponding second areas in the file system management areas of the n storages and the one storage, and configured to record the temporary parity data outside the file system management area of at least one storage out of the n storages and the one storage.