Abstract: A Storage Mapping Driver (SMD) that provides a system and method for determining the application host storage locations of file data so that the file data can be later backed up directly from its storage media. The application host location of the file data is sent to the backup host either just prior to a backup or as the information is obtained. In this way the backup host is capable of backing up the files without reference to systems on the application host such as the file system manager and the volume manager. The SMD invokes the file system manager and/or the volume manager to read a file to be backed up in order to obtain a file map. If the host system does not have a file system manager and/or a volume manager, a backup file system manager is provided, which is invoked by the SMD to read a file to obtain a file map for use during a backup.

Abstract: Methods and systems to backup data are provided. A first computing device identifies data to backup and stabilizes a frozen image of that data. Next, the frozen image is decomposed into physical storage addresses housing the data. The decomposed storage addresses are sent to a second computing device. The second computing device uses the storage addresses along with existing operating system I/O operations to backup the data to computer readable media.

Abstract: A deleted snapshot of a data volume may be reconstructed from an existing snapshot and one or more modification logs. For example, modifications to the data volume that occur subsequent to creation of a first snapshot may be logged in a modification log. If the first snapshot is deleted, the first snapshot may be reconstructed by modifying a second snapshot, created after the first snapshot, according to the modification log in order to undo any modifications made to the data volume prior to creation of the second snapshot and after creation of the first snapshot.

Abstract: Methods and systems to backup data are provided. A first computing device identifies data to backup and stabilizes a frozen image of that data. Next, the frozen image is decomposed into physical storage addresses housing the data. The decomposed storage addresses are sent to a second computing device. The second computing device uses the storage addresses along with existing operating system I/O operations to backup the data to computer readable media.