METHOD FOR ENCODING, DATA-RESTRUCTURING AND REPAIRING PROJECTIVE SELF-REPAIRING CODES

摘要

A method for encoding, data-restructuring and repairing projective self-repairing codes is provided. The method comprises the following steps: equally dividing original data; setting base finite fields which have an inclusion relation according to parameters of the equally divided data: a first finite field and a second finite field; partitioning a space constructed of B/C-dimensional vectors with its subgroup coset, and choosing B/C subspaces among the subspaces, each chosen subspace being corresponding to a storage node; arraying vectors of the B/C subspaces to obtain an encoding matrix; and according to each storage node's encoding vectors, obtaining encoding data stored therein, and storing the encoding data into the storage node. The method's calculation is simpler and its overhead is less.