StorageCraft Assigned Two Patents

Encryption of certain blocks in deduplication vault
StorageCraft Technology Corporation, Draper, UT, has been assigned a patent (9,003,200) developed by Gardner, Andrew Lynn, Oak City, UT, for a “avoiding encryption of certain blocks in a deduplication vault.”

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”Avoiding encryption of certain blocks in a deduplication vault. In one example embodiment, a method of avoiding encryption of certain blocks during a backup of a source storage into a deduplication vault storage may include analyzing each allocated plain text block stored in a source storage at a point in time to determine if the allocated plain text block is already stored in the deduplication vault storage. If the allocated plain text block is not stored in the deduplication vault storage, the block may be encrypted and the encrypted block may be analyzed to determine if the encrypted block is already stored in the deduplication vault storage. If neither the allocated plain text block nor the encrypted block is already stored in the deduplication vault storage, the encrypted block may be stored in the deduplication vault storage.“

The patent application was filed on September 22, 2014 (14/493,028).

Hash value comparison during crash-tolerant incremental change tracking
between backups of source storage
StorageCraft Technology Corporation, Draper, UT, has been assigned a patent (9,003,143) developed by Barnes, Scott, Draper, UT, and Bushman, Nathan S., Pleasant Grove, UT, for a “hash value comparison during crash-tolerant incremental change tracking between backups of a source storage.”

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”Hash value comparison during crash-tolerant incremental change tracking between backups of a source storage. In one example embodiment, a method includes assigning each block in a source storage into one of multiple zones, creating a nonvolatile zone map, tracking each of the zones that is changed between a first point in time and a second point in time, identifying, as potentially changed zone blocks, the blocks in the source storage assigned to any zone marked as changed in the nonvolatile zone map, identifying, as potentially outdated backup blocks, the most recently backed-up blocks in one or more prior backups that correspond to the potentially changed zone blocks, calculating source hash values of the potentially changed zone blocks, calculating backup hash values of the potentially outdated backup blocks, and comparing the source hash values to the backup hash values to determine which blocks in the source storage actually changed.“

The patent application was filed on April 30, 2014 (14/266,568.