Patent attributes
A method, computer program product, computing system, and system for backing up changed sectors of a virtual disk are described. A method may include determining changed file regions of the virtual disk, the changed file regions being file regions of the virtual disk that changed since a last backup. The method may further include determining changed blocks of the virtual disk, the changed blocks of the virtual disk being blocks of the virtual disk that lie, at least in part, in the changed file regions. The method may also include determining changed sectors for the changed blocks of the virtual disk based upon, at least in part, at least one of: a region offset, a block offset, sector size, and a count of sectors in an associated block. Additionally, the method may include backing up the changed sectors of the virtual disk.
