METHOD FOR STORING DATA IN FAULT TOLERANCE STORAGE SUB-SYSTEM, THE STORAGE SUB-SYSTEM AND DATA FORMATION MANAGEMENT PROGRAM FOR THE SYSTEM

摘要

PPROBLEM TO BE SOLVED: To provide a method for providing data protection having high cost-effectiveness. PSOLUTION: The fault tolerance sub-system has an array of data storage devices irrelevant to faults. A method for storing data includes a step for dividing a storage area in a storage device into a logical mirror area and a logical stripe area, a step for copying data by storing copies of the data in a pair of storage devices in storing data in the mirror area and a step for storing data as stripes of blocks including a data block and a related error correction block in storing data in the stripe area. PCOPYRIGHT: (C)2004,JPO