Storagecraft Technology Corporation

Stephen Williams

Nathan S Bushman

Optimizing backup of whitelisted files. In one example embodiment, a method of optimizing backup of whitelisted files may include a whitelist analysis phase that may include identifying a set of allocated blocks in a source storage at a point in time, identifying whitelisted files that are already stored in a deduplication storage, and determining whether one of the whitelisted files is stored in the source storage by analyzing file attribute data stored in file system metadata in the source storage. If so, the whitelist analysis phase may include pruning the set of allocated blocks to exclude the allocated blocks that correspond to content of the one whitelisted file and associating logical locations of the content of the one whitelisted file as stored in the source storage with logical locations of the content of the one whitelisted file as stored in the deduplication storage.

Optimizing backup of whitelisted files

Avoiding compression of high-entropy data during creation of a backup of a source storage. In one example embodiment, a method for avoiding compression of high-entropy data during creation of a backup of a source storage may include identifying a chunk with an original size in a file in a source storage, compressing, during creation of a backup of the source storage, the chunk to generate a compressed chunk with a compressed size, determining a compression ratio for the chunk by comparing the original size to the compressed size, determining whether the compression ratio is less than the compression threshold, and, in response to determining that the compression ratio is less than the compression threshold, automatically designating the file as a high-entropy file and automatically avoiding compression, during the creation of the backup, of chunks in a second similar file in the source storage.

Growing community of inventors

South Jordan, UT, United States of America

Stephen Williams