Detection and correction of silent data corruption

摘要

There is provided a method of writing data to a sector of a storage device, the sector comprising a data field and a protection information field and having identifying information identifying the location of said sector. The method comprises providing data to be written to an intended sector, generating, for said intended sector, a message comprising the data and the identifying information of said intended sector and performing, on said message, error correcting encoding to generate a codeword. The codeword comprises the message and parity information generated from said error correcting coding. The data can then be written to the data field of the sector, and the parity information can be written to said protection information field of the sector.

主权项

1. A method comprising:
providing data to be written to an intended sector of a data storage device; generating, for the intended sector, a message comprising the data to be written to the intended sector and identifying information for the intended sector, the identifying information identifying a location of the intended sector and comprising a device identifier address and a sector logical address; performing, on the message, error correcting encoding to generate parity information derived from the data and the identifying information; generating a codeword comprising the message and the parity information generated from the error correcting coding, the codeword arranged as N-bit symbols with N greater than eight; writing the data to a data field of the intended sector; and writing the parity information to a protection information field of the sector.