Emc Corporation

Thomas L Dings

Neil F Schutzman

Madhav Mutalik

Ananthan K Pillai

Ajay Shekhar

Pashupati Kumar

Subramanian Periyagaram

Jacob M Jacob

Robert W Toop

Robert Alan Boudrie

John E Stockenberg

Michael H Wright

David C Dysert

Sujit Suresh Naik

Christophe Balczunas

Performing data backup for a client includes receiving, at a host other than the client, volume information including data indicating a physical data storage location of at least a part of a volume comprising one or more stored objects associated with the client; and determining at the host, based at least in part on the volume information, a stored object information for a stored object included in the volume, the stored object information including data associated with a physical data storage location of the stored object.

Data mover discovery of object extent

A method of attribute based resource allocation is presented. A resource such as a pool of storage has certain properties or attributes associated with portions of the pool. When a request for storage is needed, the requester provides a selection expression which comprises properties and logical operators. From the selection expression a determination is made to allocate portions of the storage pool which meet the requirements of the selection expression.

Method and system for allocating multiple attribute storage properties to selected data storage resources

A method of attribute based resource allocation is presented. A resource such as a pool of storage has certain properties or attributes associated with portions of the pool. When a request for storage is needed, the requester provides a selection expression which includes properties and logical operators. From the selection expression a determination is made to allocate portions of the storage pool which meet the requirements of the selection expression.

Attribute based resource allocation

An information recovery system includes mountable data volume replications that can be examined for enhanced error detection and correction.

Information replication system having enhanced error detection and recovery

An information recovery system mounts partial database replications, such as selected tablespaces, on a target host.

Information replication system mounting partial database replications

An information recovery system automatically selects storage for a replication of a data volume.

Information replication system having automated replication storage

An enterprise storage system for performing a file level backup operation on data using a mirror disk and a primary disk includes a split mechanism to split the mirror disk from the primary disk before backing data files up from said mirror disk to said sequential storage media and an extent mapping mechanism to perform extent mapping on files to be backed up in a given backup session before the split mechanism splits the mirror for the same given backup session, and an extent map check and update mechanism to check, after the split mechanism splits the mirror for the same given backup session, whether any files have been updated in a manner so as to require additional or revised extent map information.

Management of file extent mapping to hasten mirror breaking in file level mirrored backups

When performing mirrored disk restores, including both disk level mirrored restores and file level mirrored restores, rather than first restore data to a mirror disk and later move that data to the primary disk, the data on the primary disk is first copied to the mirror disk, and thereafter, the data is restored from the backup storage device to the primary disk, independent of the mirror disk.

Reversible mirrored restore of an enterprise level primary disk

A system for providing high speed external backup and restoration of data in a data storage system. Individual data objects are backed up in logical order on backup media such as magnetic tape so that they may be retrieved individually. Minimized descriptions of backed up data are transmitted between the host and backup systems to control high speed transfer of data between data servers and backup devices on a separate data channel. The descriptions are manipulated by the backup system to comply with formats of any number of host systems and data storage systems and to efficiently map the backed up data onto the backup devices. The system also provides for restoration of data to the data storage system by using a host system to pre-allocate space for the restored data, obtaining mapping information for the allocated space from the host system, and then directly writing the restored data into the allocated space, based on the mapping information.

Growing community of inventors

Hopkinton, MA, United States of America

Thomas L Dings