| 主权项 |
1. A method for storing data on a non-cache recording medium comprising:
i. receiving an I/O stream of N Bytes; ii. fragmenting the N Bytes into fragmented units of X Bytes; iii. applying a cryptographic hash function to each fragmented unit of X Bytes to form a generated hash function value for each fragmented unit of X Bytes; iv. encoding each hash function value for storage through use of a bit marker table to generate a bit marker for each hash function value for storage and storing each bit marker in the non-cache recording medium, wherein the encoding further uses a frequency of occurrence converter, wherein for each hash function value for storage, a converted string of bits is generated, wherein for at least two different strings of Y bits, the converted strings of bits that are output are of different lengths; v. accessing a correlation file, wherein the correlation file associates a stored hash function value of Y bits with each of a plurality of stored sequences of X Bytes and
(a) if the generated hash function value for a fragmented unit of X Bytes is in the correlation file, using the stored hash function value of Y bits for storage on a non-cache recording medium; and(b) if the generated hash function value for the fragmented unit of X Bytes is not in the correlation file, then storing the generated hash function value of Y bits with the fragmented unit of X Bytes in the correlation file and using the generated hash function value for storage on the non-cache recording medium. |
