APPARATUS, SYSTEM, AND METHOD TO INCREASE DATA INTEGRITY IN A REDUNDANT STORAGE SYSTEM

摘要

An apparatus, system, and method are disclosed to increase data integrity in a redundant storage system. The receive module 502 receives a read request to read data from an ECC chunk 418 spanning N storage elements 402 of an array 400 of N+P storage elements 402. The N storage elements 402 each store a portion of the ECC chunk 418 and the P storage elements 402p store parity data. The data read module 504 reads data from each of X number of storage elements 402 of the N+P storage elements 402 where (N+P) > X =N. The ECC correction module 506 corrects the read data of the ECC chunk 418 using Error Correcting Code ("ECC") in response to the ECC chunk 418 comprising a number of bit errors below a correctable bit error threshold. The substitution module 604 may correct the read data with substitute data from a substitute storage element 402.