Patent ID: 9645754
Date: 2017-05-09
CPC Classifications: G06F

Claim:
1. A method for storing data for a data deduplication system, the method comprising: obtaining data chunks achieved from data deduplication; assigning the data chunks to at least one group; recording grouping information of the data chunks, wherein the grouping information associates each data chunk of the data chunks to a given group of the at least one group; with respect to each group, calculating parity data chunks based on data chunks in the group, wherein the parity data chunks are used for, in response to a data chunk in the group being damaged, causing the damaged data chunk to be recovered on the basis of other data chunks in the group and parity data chunks of the group; storing the calculated parity data chunks; and responsive to the data chunk in the group being damaged, recovering the damaged data chunk on the basis of other data chunks in the group to which the damaged data chunk belongs and parity data chunks of the group.