Patent ID: 8375071

Claim:
A file management information storage apparatus for inputting and outputting file management information, the file management information storage apparatus comprising: a storage unit having a fixed-length area that stores plural pieces of fixed-length data and a variable-length area that stores plural pieces of variable-length data; a file management section that accepts an input-output request for the file management information; a fixed-length area management section that inputs and outputs basic management information as fixed-length data for managing a file corresponding to the input-output request to and from the fixed-length area of the storage unit on the basis of the input-output request accepted by the file management section; and a variable-length area management section that inputs and outputs extended management information as variable-length data for managing the file corresponding to the input-output request to and from the variable-length area of the storage unit on the basis of the input-output request accepted by the file management section.