HDS Assigned Two Patents

Data privacy in fixed content distributed storage
Hitachi Data Systems Corporation (HDS), Santa Clara, CA, has been assigned a patent (9,794,232) developed by Shaw, David M., Newton, MA, for a “method for data privacy in a fixed content distributed data storage.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “A storage cluster of symmetric nodes includes a data privacy scheme that implements key management through secret sharing. The protection scheme preferably is implemented at install time. At install, an encryption key is generated, split, and the constituent pieces written to respective archive nodes. The key is not written to a drive to ensure that it cannot be stolen. Due to the secret sharing, any t of the n nodes must be present before the cluster can mount the drives. To un-share the secret, a process runs before the cluster comes up. It contacts as many nodes as possible to attempt to reach a sufficient t value. Once it does, the process un-shares the secret and mounts the drives locally. Given bidirectional communication, this mount occurs more or less at the same time on all t nodes. Once the drives are mounted, the cluster can continue to boot as normal.”

The patent application was filed on July 29, 2015 (14/812,297).

Locating redundant data using patterns of matching fingerprints
Hitachi Data Systems Corporation (HDS), Santa Clara, CA, has been assigned a patent (9,766,832) developed by Trimble, Ronald Ray, Acton, MA, Kennedy, Jon Christopher, Marlborough, MA, Reiter, Timmie G., Charlotte, NC, Biernacki, David Michael, Woonsocket, RI, McMaster, Carey Jay, Stow, MA, and King, Stefan Merrill, Belmont, MA, for a “method for data privacy in a fixed content distributed data storage.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “A system configured to compute match potential between first data and second data is provided. The system includes data storage storing the first data and the second data, and at least one processor coupled to the data storage. The at least one processor is configured to identify a first sequence of fingerprints characterizing a first plurality of sections of the first data, the first sequence being ordered according to an order of the first plurality of sections within the first data, identify a second sequence of fingerprints comprising fingerprints that match fingerprints within the first sequence, the second sequence of fingerprints characterizing a second plurality of sections of the second data, the second sequence being ordered according to an order of the second plurality of sections within the second data, quantify a similarity between the first sequence and the second sequence, and adjust the match potential based on the similarity.”

The patent application was filed on January 22, 2014 (14/161,142).