Patent ID: 7876620

Claim:
A method for operating non-volatile storage, comprising: receiving a read command requesting to read data from at least one selected non-volatile storage element in a set of non-volatile storage elements, the at least one selected non-volatile storage element is associated with a selected word line in a set of word lines; in response to the read command, selecting another word line in the set of word lines; sensing data from non-volatile storage elements which are associated with the another word line, including performing an error correction process; determining a metric based on the error correction process; if the metric is below a threshold, reading the at least one selected non-volatile storage element using at least one read compare level which is determined based on the data sensed from the non-volatile storage elements which are associated with the another word line; and if the metric is above the threshold, further investigating integrity of the data in the set of non-volatile storage elements.