Patent ID: 8498962
Filing Date: 2013-07-30
Classification: G06F

Abstract:
1. A method comprising: generating a first signature for a first file, wherein the first signature is generated as a function of data within the first file; comparing the first signature with a plurality of signatures stored in memory, wherein the plurality of signatures correspond to a plurality of backup copies, respectively, of a plurality of files, respectively; in response to determining that the first signature does not match any of the plurality of signatures, creating a backup copy of the first file; generating a second signature for a second file, wherein the second signature is generated as a function of data within the second file; comparing the second signature with one or more of the plurality of signatures; in response to determining that the second signature matches one of the plurality of signatures, comparing a time stamp for the one signature of the plurality with a modification time stamp for a file corresponding to the one signature.