Veritas Technologies LLC

Cheng Shan

Xianbo Zhang

Shuai Cheng

Wen Feng Jiang

Dongxu Sun

Yu Wang

Haibin She

Cheng Hai Zhu

Xinbao Jin

Jinchang Zhang

Chunzhong Zhang

Wenfeng Jiang

Disclosed herein are methods, systems, and processes to optimize and manage fingerprint backward compatibility in deduplication backup computing systems. A new fingerprint is generated for a segment object stored in a data container based on a new fingerprinting process. A header file is modified by replacing an old fingerprint for the segment object based on an old fingerprinting process with the new fingerprint. An entry including information indicating an association between the old fingerprint and the new fingerprint is created in a fingerprint map file.

Fingerprint backward compatibility in deduplication backup systems

Techniques for data backup and restoration are disclosed. In one embodiment, the techniques may be realized as a method including generating a first backup representing a database at a first time; after the first backup, generating a plurality of journal entries, each journal entry representing a change to the database made after the first time; and restoring the database from the first backup and the plurality of journal entries, the restored database including the changes represented by the entries.

Techniques for data backup and restoration

The disclosed computer-implemented method for healing images in deduplication storage may include (i) detecting that a data segment stored within deduplication storage is corrupted by executing an algorithm on the data segment to generate a numerical identifier for the data segment and determining that the numerical identifier does not match a previously stored numerical identifier for the data segment, (ii) checking, during a backup operation, whether a digital fingerprint of a data segment of an image being backed up matches a digital fingerprint of the corrupted data segment that was taken prior to corruption and that is already stored within the deduplication storage, and (iii) appending the data segment from the image being backed up to a container that already contains the corrupted data segment rather than replacing the corrupted data segment. Various other methods, systems, and computer-readable media are also disclosed.

Systems and methods for healing images in deduplication storage

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Beijing, China

Cheng Shan