Abstract: A method and apparatus for efficiently logging changes to a file system are disclosed. A file system filter driver intercepts I/O requests directed to a file system, and analyzes the I/O requests to determine whether the requests are write or modify requests directed to a file included in a list of files to be monitored for changes. If the I/O request is directed to such a file, the file system filter driver logs the I/O request to a b-tree structured change log file. Furthermore, in one embodiment, the file system filter driver is configured to log file system changes to multiple log files to coincide with snapshot operations, such that the file system changes to be included in each snapshot are included in separate log files.

Abstract: An archive method and system receives a backup request for a target dataset used by an application on a primary storage system to be backed up on a secondary storage system. Different applications may each have a corresponding proprietary application format for storing their datasets. An application translator module is loaded into an extensible backup manager that converts between a proprietary application format associated with the target dataset and a predetermined storage format used by the extensible backup manager. The application translator module converts from the proprietary application format into the predetermined storage format when the baseline backup of the target dataset has not yet been performed. An incremental backup uses the application translator module to convert from the proprietary application format associated with the application into the predetermined storage format of the extensible backup manager.

Abstract: An archive method and system receives a backup request for a target dataset used by an application on a primary storage system to be backed up on a secondary storage system. Different applications may each have a corresponding proprietary application format for storing their datasets. An application translator module is loaded into an extensible backup manager that converts between a proprietary application format associated with the target dataset and a predetermined storage format used by the extensible backup manager. The application translator module converts from the proprietary application format into the predetermined storage format when the baseline backup of the target dataset has not yet been performed. An incremental backup uses the application translator module to convert from the proprietary application format associated with the application into the predetermined storage format of the extensible backup manager.