Method and apparatus for storing a data to memory devices

An apparatus, comprising:

• a plurality of storage devices to store data and corresponding parity data, said data distributed among a plurality of data strips stored in said storage devices, respectively;
• and
• a processing unit to execute processes which include:
• calculating a parity data based on the data stored in said storage devices;
• determining whether said calculated parity data coincides with a predetermined value;
• and
• storing an alternative parity data instead of said calculated parity data into one of said storage devices storing the parity data, when said calculated parity data coincide with said predetermined value.

An apparatus, comprising:

• a plurality of computer readable media to store data and corresponding parity data among a plurality of data strips stored in the computer readable media;
• means for calculating the parity data based on the data to be stored in the computer readable media;
• means for changing the calculated parity data to an alternative parity data if the calculated parity data is equal to a predetermined value;
• and
• means for storing and/or reading the data and the corresponding alternative parity data and/or the calculated parity data to and/from the computer readable media.