Patent ID: 8589726

Claim:
A method of uncovering corrupted data in a physical storage space of a storage system, said corrupted data being correctable by an error correction code (ECC), the method comprising: executing a first read command in respect of a given data unit with the ECC disabled so that the first read command returns a first data in an uncorrected form; subsequent to the first read command, executing a second read command in respect of said given data unit, the second read command being adapted to utilize an ECC to check for corrupted data and to return a second data in an error-free form; determining whether a difference exists between the first data and the second data, said difference being indicative of at least one corrected error in said given data unit; and determining that at least part of non-transitory storage media that store said data unit is suspected as malfunctioning, in response to at least said difference.