Symantec Corporation

Veritas Technologies LLC

Ashutosh Bahadure

Carl J Appellof

Edward Michael Goble

A computer-implemented method for enabling efficient access to incremental backups may include selecting an incremental backup of a volume of data, the incremental backup of the volume of data storing blocks from the volume of data that have changed since a previous backup of the volume of data, identifying block metadata for the incremental backup that describes a location of each block within the blocks in the incremental backup, detecting synthesized block metadata for the previous backup that describes a location of each block in the volume according to a synthesized view of the volume of data from a full backup of the volume up to the previous backup, and combining the block metadata for the incremental backup with the synthesized block metadata for the previous backup to generate new synthesized block metadata for the incremental backup. Various other methods, systems, and computer-readable media are also disclosed.

Systems and methods for enabling efficient access to incremental backups

Data blocks are copied from a source (e.g., a source virtual disk) to a target (e.g., a target virtual disk). The source virtual disk format is preserved on the target virtual disk. Offsets for extents stored in the target virtual disk are converted to offsets for corresponding extents in the source virtual disk. A map of the extents for the source virtual disk can therefore be used to create, for deduplication, segments of data that are aligned to boundaries of the extents in the target virtual disk.

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Lake Mary, FL, United States of America

Ashutosh Bahadure