ENCODER BY-PASS WITH SCRAMBLER

摘要

A first physical location is read to obtain read data. Error correction decoding is performed on the read data to obtain error-corrected data where the error-corrected data includes first error-corrected metadata. Error correction encoding is performed on a first random sequence combined with a second random sequence, concatenated with second metadata. Error correction encoding is also performed on a sequence of zeros concatenated with the first error-corrected metadata to obtain second encoded data. The error-corrected data, the first encoded data, and the second encoded data are summed to obtain migrated data, which is stored at a second physical location.

主权项

1. A system, comprising:
a storage interface configured to:
read a first physical location in storage to obtain read data; andstore migrated data at a second physical location in the storage; an error correction decoder configured to perform error correction decoding on the read data in order to obtain error-corrected data, wherein the error-corrected data includes first error-corrected metadata; an error correction encoder configured to:
perform error correction encoding on (1) a first random sequence combined with a second random sequence, concatenated with (2) second metadata; andperform error correction encoding on a sequence of zeros concatenated with the first error-corrected metadata in order to obtain second encoded data; and an adder configured to sum (1) the error-corrected data, (2) the first encoded data, and (3) is the second encoded data in order to obtain the migrated data.