Emc Corporation

Emc IP Holding Company LLC

Mandavilli Navneeth Rao

Christopher Hercules Claudatos

Michael John Dutch

Jian Xing

Mayank Joshi

Feng Guo

Qiyan Chen

Dong Xiang

Lintao Wan

Anand Raj

A method, article of manufacture, and apparatus for backing up data. In some embodiments, this includes backing up an object to a repository, segmenting the object into a plurality of sub-objects, and assigning a priority to a sub-object. Segmenting the object may include segmenting the object based on file access patterns. Assigning a priority may include assigning a high priority based on file access patterns, or based on policy, among others.

Prioritized backup segmenting

A method, article of manufacture, and apparatus for recovering data. In some embodiments, this includes selecting an object to be recovered, recovering sub-objects of the object based on the priorities assigned to the sub-objects, and reprioritizing the sub-objects based on an application's I/O during recovery. In some embodiments, reprioritizing the sub-objects the sub-objects includes assigning a lower priority to the sub-objects when an application has completed I/O on the object. In some embodiments, recovering sub-objects includes recovering sub-objects to a remote location.

Dynamic prioritized recovery

A method, article of manufacture, and apparatus for processing data. In some embodiments, this includes analyzing a first container at a block level, determining a first level of granularity based on the analysis of the first container, based on the first level of granularity, identifying a first set of data objects, storing metadata of the first set of data objects in a recovery catalog, based on the first set of data objects, identifying a second container, analyzing the second container at a block level, determining a second level of granularity based on the analysis of the second container, based on the second level of granularity, identifying a second set of data objects, storing metadata of the second set of data objects in the recovery catalog, wherein the recovery catalog is stored in a storage device.

Post backup catalogs

A method, article of manufacture, and apparatus for accessing data during data recovery. In some embodiments, this includes sending an I/O request from an application to an object, wherein the object is being recovered, establishing an I/O intercept, intercepting the application's I/O request with the I/O intercept, and redirecting the I/O request based on the status of the object's sub-objects.

Data access during data recovery

A method, article of manufacture, and apparatus for recovering data. A method for recovering data includes selecting an object to be recovered, recovering sub-objects of the object based on the priorities assigned to the sub-objects, and reprioritizing the sub-objects based on an application's I/O during recovery. A method for recovering data includes reprioritizing the sub-objects the sub-objects includes assigning a lower priority to the sub-objects when an application has completed I/O on the object. A method for recovering data includes recovering sub-objects includes recovering sub-objects to a remote location.

A method, article of manufacture, and apparatus for backing up data. The method for backing up data includes backing up an object to a repository, segmenting the object into a plurality of sub-objects, and assigning a priority to a sub-object. Segmenting the object may include segmenting the object based on file access patterns. Assigning a priority may include assigning a high priority based on file access patterns, or based on policy, among others.

A method, article of manufacture, and apparatus for protecting data. In some embodiments, this includes taking a snapshot of a virtual machine, parsing the virtual machine to determine a header section and a file system, indexing the virtual machine based on the parsing, storing the index in a storage device, and storing the snapshot in a deduplicated data storage device.

Efficient backup of virtual data

A method, article of manufacture, and apparatus for protecting data. In some embodiments, this includes creating a copy of a backup virtual machine on a deduplicated data storage device, registering the copy with a virtual environment manager, operating a virtual machine based on the copy and storing changes made during operation of the virtual machine to the copy.

Virtual machine disaster recovery

A method, article of manufacture, and apparatus for restoring data. In some embodiments, this includes determining an object to be recovered, determining a representation of the object, and requesting the representation of the object from a data resource system. In some embodiments, the representation of the object is a hash value of the object. In some embodiments, the representation of the object is a segment of the object.

Optimized recovery

Moving previous version data required to be restored beyond a continuous data protection window, if required, to facilitate efficient reclamation and reallocation of storage allocated to a continuous data protection journaling process is disclosed. In some embodiments, storage is allocated when possible in an allocation group that enables a continuous data protection or other backup process to perform a series of successive write operations without requiring that a write head be moved inefficiently to many arbitrary points on the storage media.

Space compaction and defragmentation mechanisms in data space

A method, article of manufacture, and apparatus for recovering data. In some embodiments, this includes creating a version of the data set, determining a metadata window based on the created version, storing metadata based on the determined metadata window in a first storage device, and storing the version in a second storage device. In some embodiments, a metadata tag may be associated with the metadata, and in some embodiments, a version tag may be associated with the version.

Growing community of inventors

Santa Clara, CA, United States of America

Mandavilli Navneeth Rao