METHOD, COMPUTER PROGRAM AND SYSTEM FOR ERROR DETECTION IN MIRRORED DATA STORAGE SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a method and system for error detection in a mirrored data storage system.

SOLUTION: The mirrored data storage system includes a first mirrored system applying a first error detection and correction code (ECC) algorithm and a second mirrored system applying a second ECC algorithm. The method reads recovered data in each of the first and second mirrored systems and processes the recovered data in each of the first and second mirrored systems by applying both first and second ECC algorithms to produce four calculated ECC values. The method uses the calculated ECC values to determine the correct recovered data of the first and second mirrored systems.

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