Abstract: A method, a system, and a computer program product for protection and recovery of backup storage systems from ransomware attacks. A request to modify data stored in a storage system is received. The storage system includes at least one component configured to store the deduplicated data. An acknowledgement of the received request is generated. The acknowledgement indicates that the data stored in the at least one component and identified in the received request was modified. Modification of the data stored in the at least one component and identified in the received request for a predetermined period of time is prevented.

Abstract: A method, a system, and a computer program product for performing a backup of data are disclosed. A grid server in a plurality of grid servers is selected for deduplicating a segment of data in a plurality of segments of data contained within a data stream. The segment of data is forwarded to the selected grid server for deduplication. A zone contained within the forwarded segment of data is deduplicated using the selected server. The deduplication is performed based on a listing of a plurality of zone stamps. Each zone stamp in the plurality of zone stamps represents a zone in a plurality of zones deduplicated by at least one server in the plurality of grid servers.

Abstract: A system, a method, and a computer program product for performing deduplication of data using a scalable deduplication grid are disclosed. A listing of a plurality of zone stamps is generated, where each zone stamp represents a zone in the plurality of zones in a data stream. The listing contains a logical arrangement of the plurality of zone stamps obtained from each storage location and being accessible by a plurality of servers. A first zone stamp in the listing is compared to a second zone stamp in the listing. The first and second zones are delta-compressed based on a determination that the first zone stamp is substantially similar to the second zone stamp. A server is selected to perform the comparison and delta-compression.

Abstract: A method, a system, and a computer program product for protection and recovery of backup storage systems from ransomware attacks. A request to modify data stored in a storage system is received. The storage system includes at least one component configured to store the deduplicated data. An acknowledgement of the received request is generated. The acknowledgement indicates that the data stored in the at least one component and identified in the received request was modified. Modification of the data stored in the at least one component and identified in the received request for a predetermined period of time is prevented.

Abstract: A method, a system, and a computer-implemented method for performing multi-level deduplication of data are disclosed. A zone stamp is generated for each zone in a plurality of zones contained in at least one data stream. The zone stamp is compared to another zone stamp. The zone stamp and another zone stamp represent zones in the plurality of zones. The comparison is performed for zones at corresponding zone levels based on a determination that a zone stamp of a zone of a preceding zone level is not similar to another zone stamp of another preceding zone level. The zone at the preceding zone level includes at least one zone of a next zone level having a size smaller than or equal to a size of the zone of the preceding zone level. The zone and another zone are deduplicated based on a determination that the zone stamp is similar to another zone stamp.

Abstract: A method, a system, and a computer program product for performing a backup of data are disclosed. A grid server in a plurality of grid servers is selected for deduplicating a segment of data in a plurality of segments of data contained within a data stream. The segment of data is forwarded to the selected grid server for deduplication. A zone contained within the forwarded segment of data is deduplicated using the selected server. The deduplication is performed based on a listing of a plurality of zone stamps. Each zone stamp in the plurality of zone stamps represents a zone in a plurality of zones deduplicated by at least one server in the plurality of grid servers.

Abstract: A system, a method, and a computer program product for performing deduplication of data using a scalable deduplication grid are disclosed. A listing of a plurality of zone stamps is generated, where each zone stamp represents a zone in the plurality of zones in a data stream. The listing contains a logical arrangement of the plurality of zone stamps obtained from each storage location and being accessible by a plurality of servers. A first zone stamp in the listing is compared to a second zone stamp in the listing. The first and second zones are delta-compressed based on a determination that the first zone stamp is substantially similar to the second zone stamp. A server is selected to perform the comparison and delta-compression.

Abstract: A system, a method, and a computer program product for performing deduplication of data using a scalable deduplication grid are disclosed. A listing of a plurality of zone stamps is generated, where each zone stamp represents a zone in the plurality of zones in a data stream. The listing contains a logical arrangement of the plurality of zone stamps obtained from each storage location and being accessible by a plurality of servers. A first zone stamp in the listing is compared to a second zone stamp in the listing. The first and second zones are delta-compressed based on a determination that the first zone stamp is substantially similar to the second zone stamp. A server is selected to perform the comparison and delta-compression.

Abstract: A method, a system, and a computer program product for performing a backup of data are disclosed. A grid server in a plurality of grid servers is selected for deduplicating a segment of data in a plurality of segments of data contained within a data stream. The segment of data is forwarded to the selected grid server for deduplication. A zone contained within the forwarded segment of data is deduplicated using the selected server. The deduplication is performed based on a listing of a plurality of zone stamps. Each zone stamp in the plurality of zone stamps represents a zone in a plurality of zones deduplicated by at least one server in the plurality of grid servers.

Abstract: A system, a method, and a computer program product for delta version clustering and re-anchoring are provided. A first anchor having a plurality of delta-compressed versions of data dependent on the first anchor is generated. The first anchor and the plurality of delta-compressed versions form a cluster. A second anchor is generated. The first anchor is replaced with the second anchor. The replacing includes re-computing at least one delta-compressed version in the plurality of delta-compressed versions to be dependent on the second anchor. The second anchor replaces the first anchor as an anchor of the cluster.

Abstract: A method, a system, and a computer program product for performing next level multi-level deduplication. A first zone stamp for a first data zone is generated and compared to a second zone stamp representing a second data zone, where the zones are first level data zones. The first and second data zones are deduplicated when the first zone stamp matches the second zone stamp. A second-level first zone stamp is selected when there is no match between first and second zone stamps. The second-level first zone stamp, representing a second-level first data zone in the first data zone, is compared to the second zone stamp and/or a second-level second zone stamp representing a second-level second data zone. The second-level first zone and one of the second data zone and the second-level second zone are deduplicated when the second-level first zone stamp matches one of the second zone stamp and the second-level second zone stamp.

Abstract: A method, a system, and a computer-implemented method for performing multi-level deduplication of data are disclosed. A zone stamp is generated for each zone in a plurality of zones contained in at least one data stream. The zone stamp is compared to another zone stamp. The zone stamp and another zone stamp represent zones in the plurality of zones. The comparison is performed for zones at corresponding zone levels based on a determination that a zone stamp of a zone of a preceding zone level is not similar to another zone stamp of another preceding zone level. The zone at the preceding zone level includes at least one zone of a next zone level having a size smaller than or equal to a size of the zone of the preceding zone level. The zone and another zone are deduplicated based on a determination that the zone stamp is similar to another zone stamp.

Abstract: A method, a system, and a computer program product for performing next level multi-level deduplication. A first zone stamp for a first data zone is generated and compared to a second zone stamp representing a second data zone, where the zones are first level data zones. The first and second data zones are deduplicated when the first zone stamp matches the second zone stamp. A second-level first zone stamp is selected when there is no match between first and second zone stamps. The second-level first zone stamp, representing a second-level first data zone in the first data zone, is compared to the second zone stamp and/or a second-level second zone stamp representing a second-level second data zone. The second-level first zone and one of the second data zone and the second-level second zone are deduplicated when the second-level first zone stamp matches one of the second zone stamp and the second-level second zone stamp.

Abstract: A method, a system, and a computer-implemented method for performing multi-level deduplication of data are disclosed. A zone stamp is generated for each zone in a plurality of zones contained in at least one data stream. The zone stamp is compared to another zone stamp. The zone stamp and another zone stamp represent zones in the plurality of zones. The comparison is performed for zones at corresponding zone levels based on a determination that a zone stamp of a zone of a preceding zone level is not similar to another zone stamp of another preceding zone level. The zone at the preceding zone level includes at least one zone of a next zone level having a size smaller than or equal to a size of the zone of the preceding zone level. The zone and another zone are deduplicated based on a determination that the zone stamp is similar to another zone stamp.

Abstract: A method, a system, and a computer program product for performing a backup of data are disclosed. A grid server in a plurality of grid servers is selected for deduplicating a segment of data in a plurality of segments of data contained within a data stream. The segment of data is forwarded to the selected grid server for deduplication. A zone contained within the forwarded segment of data is deduplicated using the selected server. The deduplication is performed based on a listing of a plurality of zone stamps. Each zone stamp in the plurality of zone stamps represents a zone in a plurality of zones deduplicated by at least one server in the plurality of grid servers.

Abstract: A system, a method, and a computer program product for performing deduplication of data using a scalable deduplication grid are disclosed. A listing of a plurality of zone stamps is generated, where each zone stamp represents a zone in the plurality of zones in a data stream. The listing contains a logical arrangement of the plurality of zone stamps obtained from each storage location and being accessible by a plurality of servers. A first zone stamp in the listing is compared to a second zone stamp in the listing. The first and second zones are delta-compressed based on a determination that the first zone stamp is substantially similar to the second zone stamp. A server is selected to perform the comparison and delta-compression.

Abstract: A method, a system, and a computer-implemented method for performing multi-level deduplication of data are disclosed. A zone stamp is generated for each zone in a plurality of zones contained in at least one data stream. The zone stamp is compared to another zone stamp. The zone stamp and another zone stamp represent zones in the plurality of zones. The comparison is performed for zones at corresponding zone levels based on a determination that a zone stamp of a zone of a preceding zone level is not similar to another zone stamp of another preceding zone level. The zone at the preceding zone level includes at least one zone of a next zone level having a size smaller than or equal to a size of the zone of the preceding zone level. The zone and another zone are deduplicated based on a determination that the zone stamp is similar to another zone stamp.

Abstract: A method, a system, an apparatus, and a computer readable medium for transmission of data across a network are disclosed.

Abstract: A system, a method, and a computer program product for adaptive scheduled periodic caching are disclosed. A data stream is received. The data stream contains a plurality of versions of data arranged in a plurality of data clusters. Each data cluster includes an anchor version having a plurality of versions of data dependent on the anchor version. A size of each anchor version of each data cluster is determined. A number of versions of data dependent on each anchor version is also determined. For each anchor version, a ratio of the determined number of dependent versions of data to the determined size of each anchor is computed. At least one anchor version for storing in a memory location is selected based on the computed ratio.

Abstract: A method, a system, an apparatus, and a computer readable medium for transmission of data across a network are disclosed.