US 8,572,045 B1Granted

System and method for efficiently restoring a plurality of deleted files to a file system volume

AssigneeSymantec Corporation

InventorDharmesh R. Shah

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Abstract

Various embodiments of a system and method for restoring a plurality of files previously deleted from a volume are described. For each respective file of the plurality of deleted files, the method may operate to determine a time at which the respective file was last modified and a time at which the respective file was deleted. These times define a respective recovery time window for the respective file. The method may further comprise determining a particular point in time that is within the recovery time windows for two or more of the plurality of deleted files. A temporary version of the volume as it existed at the particular point in time may be created, and each file of the two or more files may be restored to the volume from the temporary version of the volume.

Claims12

Dependent claims

A computer-accessible storage medium storing program instructions executable to:

for each respective file of a plurality of files deleted from a volume, determine a respective recovery time window for the respective file, wherein the respective recovery time window for each respective file is defined by a time at which the respective file was last modified and a time at which the respective file was deleted;
in response to determining the recovery time windows for the plurality of files, automatically determine a particular point in time that is within the recovery time windows for two or more of the plurality of deleted files by calculating an intersection of the recovery time windows for the two or more files and determining a point in time within the intersection, wherein the intersection defines a time period in which the recovery time windows for the two or more files overlap;
in response to said determining the particular point in time, create a temporary version of the volume as it existed at the particular point in time;
and
restore each file of the two or more files to the volume from the temporary version of the volume.

2 more elements

A system comprising:

one or more processors;
and
memory storing program instructions;
wherein the program instructions are executable by the one or more processors to:
for each respective file of a plurality of files deleted from a volume, determine a respective recovery time window for the respective file, wherein the respective recovery time window for each respective file is defined by a time at which the respective file was last modified and a time at which the respective file was deleted;
in response to determining the recovery time windows for the plurality of files, automatically determine a particular point in time that is within the recovery time windows for two or more of the plurality of deleted files by calculating an intersection of the recovery time windows for the two or more files and determining a point in time within the intersection, wherein the intersection defines a time period in which the recovery time windows for the two or more files overlap;
in response to said determining the particular point in time, create a temporary version of the volume as it existed at the particular point in time;
and
restore each file of the two or more files to the volume from the temporary version of the volume.

6 more elements

Dependencies are inferred from the claim text.