Symantec Corporation

Veritas Technologies LLC

Tomtom Global Content B.v.

Data Center Technologies

Nick Cremelie

Bastiaan Stougie

Mark Christiaens

Joris Custers

Tim Bekaert

Tom De Coninck

Pascal Clarysse

Mark Vertongen

Koen Verheyen

Koen D'Hoye

Erwin Perremans

Hans Verheyden

There is provided a method for identifying possible errors/inconsistencies within an electronic map representation of a network of navigable elements within a geographic area, the method comprising: obtaining at a server positional data relating to the movement over time of a plurality of devices travelling around the navigable network; processing the obtained positional data at the server with reference to the electronic map representing the navigable network in order to identify potential inconsistencies in the map in the form of one or more locations within the navigable network where an observed behaviour of devices travelling around the navigable network as indicated by the obtained positional data is not consistent with a behaviour that would be expected based on the electronic map. This information may then be relayed to navigation devices for supplementing the electronic map when generating navigation instructions.

Supplementing electronic map data from user behavior

A system, method, and medium for detecting expired data in a data deduplicated storage system are disclosed. The system receives a request to insert a file into the deduplicated storage system. In response, the system determines a unique identifier for the file and stores the unique identifier in a list of unique identifiers associated with a data object that stores the file content. The system determines that the data object is not expired based at least in part on the identifier being present in the list of unique identifiers.

System and method for efficient data removal in a deduplicated storage system

Analyzing backup objects maintained by a de-duplication server. A plurality of first objects may be maintained. Each first object may refer to second object(s) and each second object may refer back to at least one first object. For each respective first object, the respective first object may be analyzed to determine the one or more second objects referred to by the respective first object. Correspondingly, a command may be generated for each respective second object of the determined second object(s), thereby generating a plurality of commands. Each command may be used to verify that the respective second object refers back to the respective first object. The plurality of commands may be sorted into a disk access order. The commands may be used to verify that each second object refers back to first objects that refer to the second object.

Analyzing backup objects maintained by a de-duplication storage system

A computer-implemented method for data-selection-specific data deduplication associated with a single-instance-storage computing subsystem may comprise: 1) detecting a request to store a data selection to the single-instance-storage computing subsystem, 2) identifying a data-selection-specific fingerprint set associated with the data selection and stored on a storage device, and 3) utilizing the data-selection-specific fingerprint set associated with the data selection for data deduplication associated with the request to store the data selection to the single-instance-storage computing subsystem. Other exemplary data deduplication methods, as well as corresponding exemplary systems and computer-readable media, are also disclosed.

Systems and methods for data-selection-specific data deduplication

A computer-implemented method for seeding a fingerprint cache for data deduplication associated with a single-instance-storage computing subsystem may comprise: 1) maintaining server-side fingerprint usage data for a plurality of fingerprints associated with data stored in the single-instance-storage computing subsystem and 2) building, based at least in part on the fingerprint usage data, a server-side fingerprint cache for use in client-side data deduplication, the server-side fingerprint cache comprising at least a subset of the plurality of fingerprints. The method may further comprise: 1) receiving a request for the server-side fingerprint cache from a client-side data deduplication computing subsystem and 2) transmitting data representative of the server-side fingerprint cache to the client-side data deduplication computing subsystem for use in client-side data deduplication associated with the single-instance-storage computing subsystem. Other exemplary fingerprint cache seeding and data deduplication methods, as well as corresponding exemplary systems and computer-readable media, are also disclosed.

Systems and methods for seeding a fingerprint cache for data deduplication

A computer-implemented method for controlling initialization of a fingerprint cache for data deduplication associated with a single-instance-storage computing subsystem may comprise: 1) detecting a request to store a data selection to the single-instance-storage computing subsystem, 2) leveraging a client-side fingerprint cache associated with a previous storage of the data selection to the single-instance-storage computing subsystem to initialize a new client-side fingerprint cache, and 3) utilizing the new client-side fingerprint cache for data deduplication associated with the request to store the data selection to the single-instance-storage computing subsystem. Other exemplary methods of controlling initialization of a fingerprint cache for data deduplication, as well as corresponding exemplary systems and computer-readable-storage media, are also disclosed.

Systems and methods for controlling initialization of a fingerprint cache for data deduplication

A system and method for managing single instance storage. A computer system includes at least two backup servers, each backup server included in a single-instance storage pool. A first backup server conveys a first de-duplicated list identifying data segments from the first storage pool to a second backup server. The first backup server receives from the second backup server a second de-duplicated list identifying a subset of the data segments and conveys the subset of the data segments to the second backup server. In response to receiving the first list from the first backup server, the second backup server de-duplicates the first list against a second storage pool and conveys the second list to the first backup server. In response to receiving the subset of the data segments, the second backup server adds the received data segments to the second storage pool.

Growing community of inventors

Ghent, Belgium

Nick Cremelie