Patent ID: 7181641
Filing Date: 2007-02-20
Classification: G11B

Abstract:
1. A method for verifying data written onto a first memory device by a data storage system, the method comprising: at a first time, generating a first sequence of numbers based on a first seed value using a pseudo random number generator, the first seed value including a first time sensitive code based on the first time; writing the first sequence of numbers on the first memory device at a first location and a second memory device using the data storage system; reading first sets of data stored on the first memory device at the first location and the second memory device; comparing the first set of data read from the first memory device to the first set of data read from the second memory device to evaluate integrity of the first set of data written onto the first memory device; at a second time, generating a second sequence of numbers based on a second seed value using the pseudo random generator, the second seed value including a second time sensitive code based on the second time; writing the second sequence of numbers on the first memory device at the first location and a second memory device using the data storage system; reading second sets of data stored on the first memory device at the first location and the second memory device; and comparing the second set of data read from the first memory device to the second set of data read from the second memory device to evaluate integrity of the first set of data written onto the first memory device.