StorageCraft Assigned Two Patents

Detecting modifications to storage that occur in alternate operating environment
StorageCraft Technology Corporation, Draper, UT, has been assigned a patent (9,361,301) developed by Bushman, Nathan S., Pleasant Grove, UT, for a “detecting modifications to a storage that occur in an alternate operating environment.”

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”Detecting modifications to a storage that occur in an alternate operating environment. In one example embodiment, a method for detecting modifications to a storage that occur in an alternate operating environment may include tracking, in a modify map, modifications to a storage that occur during operation of a primary operating environment, identifying a first most recent transaction identifier in a journal of a file system of the storage prior to closing of the storage by the primary operating environment, upon opening of the storage by the primary operating environment, identifying a second most recent transaction identifier in the journal, determining that the second most recent transaction identifier does not match the first most recent transaction identifier, concluding that the storage was modified in an alternate operating environment between the closing and the opening of the storage by the primary operating environment, and invalidating the modify map.“

The patent application was filed on May 7, 2015 (14/706,654).

Capturing post-snapshot quiescence writes in branching image backup chain
StorageCraft Technology Corporation, Draper, UT, has been assigned a patent (9,361,185) developed by Bushman, Nathan S., Pleasant Grove, UT, for a “capturing post-snapshot quiescence writes in a branching image backup chain .”

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”Capturing post-snapshot quiescence writes in a branching image backup chain. In one example embodiment, a method for capturing post-snapshot quiescence writes in a branching image backup chain may include taking a first snapshot of a source storage at a first point in time, identifying a first set of block positions of blocks that are allocated in the source storage at the first point in time, identifying a second set of block positions of blocks that are written to the first snapshot during post-snapshot quiescence of the first snapshot, resulting in a first quiesced snapshot, copying the blocks in the first set of block positions from the first snapshot to a full image backup, copying the blocks in the second set of block positions from the first quiesced snapshot to a first incremental image backup that depends on the full image backup, tracking a third set of block positions of the blocks that are modified in the source storage between the first point in time and a second point in time, taking a second snapshot of the source storage at the second point in time, identifying a fourth set of block positions of the blocks that are allocated in the source storage at the second point in time, identifying a fifth set of block positions of blocks that are written to the second snapshot during post-snapshot quiescence of the second snapshot, resulting in a second quiesced snapshot, calculating a sixth set of block positions by performing a Boolean AND operation on the third set of block positions and the fourth set of block positions, copying the blocks in the sixth set of block positions from the second snapshot to a second incremental image backup that depends on the full image backup, and copying the blocks in the fifth set of block positions from the second quiesced snapshot to a third incremental image backup that depends on the second incremental image backup.“

The patent application was filed on June 8, 2015 (14/733,628).