Emc Corporation

Delphix Corporation

Other

Avamar Technologies, Inc.

Jedidiah Yueh

Alok Kumar Srivastava

Charles Li Zha

Yan Wang

Xavier David Luiz

Scott Auchmoody

Scott H Ogata

Thomas B Bolt

Jennifer Starling

Gregory Hagan Moulton

Eric Olsen

Felix Hamilton

Charlie Li Zha

Clint L McVey

William Crosby

Robert Ramos

Information from multiple databases is retrieved and stored on a database storage system. Multiple point-in-time copies are obtained for each database. A point-in-time copy retrieves data changed in the database since the retrieval of a previous point-in-time copy. A virtual database (VDB) is created by creating a set of files in the data storage system. Each file in the set of files created for a VDB is linked to the database blocks on the database storage system associated with a point-in-time copy of the source database. The set of files associated with the VDB are mounted on a database server allowing the database server to read from and write to the set of files. Workflows based on VDBs allow various usage scenarios based on databases to be implemented efficiently, for example, testing and development, backup and recovery, and data warehouse building.

Virtual database system

User interactions with a database storage system allow creation of virtual databases based on point-in-time copies associated with a source database. Multiple point-in-time copies are obtained for each source database. A point-in-time copy retrieves data changed in the source database since the retrieval of a previous point-in-time copy. A virtual database (VDB) is created by creating a set of files in the data storage system and mounting the files on a database server allowing the database server to access the files. User interactions allow the user to specify the source database, a point in time associated with the source database and a destination server to create the virtual database. User input can specify other attributes associated with the virtual database including the file paths, database parameters etc. The user can specify schedules of various actions, including making and retention of point-in-time copies.

Interfacing with a virtual database system

Datacenter workflow automation scenarios using virtual databases

File system backups are performed by copying information describing changes in the file system since a previous point in time. To restore data, a virtual restored file system (VRFS) structure is created corresponding to a snapshot of data copied from the file system that is stored in the backup file system. A client can read the data stored in the backup file system pointed at by the VRFS structure as well as write to the backup file system. Multiple clients can share blocks of data stored on the backup file system via the same VRFS structure or via multiple VRFS structures. If a client writes to a data block pointed at by a VRFS, a copy of the data block is made to which the client makes changes so that the data in the original data blocks is saved for other clients.

De-duplication based backup of file systems

A centralized content addressed storage (CAS) application and a method for providing data protection are implemented by running a CAS application on a virtualization layer of a computer platform. The virtualization layer presents to the CAS application a normalized representation of a hardware subsystem of the computer platform, shielding the CAS application from actual hardware devices of the computer platform. A storage device of the computer platform is used to store a raw data set and the CAS application generates a backup data set of the raw data set. The CAS application stores the backup data set to an archive mechanism of the computer platform and can also restore and recover the raw data set in the event it is lost, corrupted or otherwise destroyed. Multiple CAS applications can be operated separately or together and they may be the same or differ.

Centralized content addressed storage

A virtualized backup storage application and a method for providing data protection are implemented by running a backup storage application on a virtualization layer of a computer platform. The virtualization layer presents to the backup storage application a normalized representation of a hardware subsystem of the computer platform, shielding the backup storage application from actual hardware devices of the computer platform. A storage device of the computer platform is used to store a raw data set and the backup storage application generates a backup data set of the raw data set. The backup storage application can replicate the backup data set to a virtualized archive of the computer platform and can also restore and recover the raw data set in the event it is lost, corrupted or otherwise destroyed.

Virtualized backup solution

In one example, a method for de-duplicating redundant data in a virtualized storage environment includes operating a data de-duplication application on a host system that is one of a plurality of host systems in a computer architecture, where the data de-duplication application is operable to globally de-duplicate data in a pooled storage capacity that comprises a virtualization of a plurality of storage devices.

De-duplication in a virtualized storage environment

A data storage and protection system includes secondary storage and at least one instance of a high efficiency storage application ('HESA'). The HESA backs up and archives client data stored in primary storage of a client computer system or client node to secondary storage. Archive files generated by the HESA re-use previously backed up client data stored in the secondary storage. In one embodiment, previously backed up client data is re-used for an archive file by organizing the archive file as a hash tree having hash values pointing to the previously backed up client data. In addition, the HESA can maximize available space in the primary storage by replacing previously backed up and/or archived client data in the primary storage with pointers that point to the previously backed up and/or archived client data in secondary storage.

Archive and backup virtualization

In one example, a method for de-duplicating redundant data in a virtualized storage environment includes, in response to receipt of a write request that includes write data and a virtual memory address of the write data, mapping the virtual memory address to a physical memory address within a pooled storage capacity that includes a virtualization of a plurality of storage devices. Next, a determination is made that a second block of data included in the write data of the write request is identical to a first block of data that is stored in the pooled storage capacity. Finally, a pointer, rather than the second block of data, is stored in the pooled storage capacity at the physical memory address. The pointer points to the first block of data.

Growing community of inventors

Menlo Park, CA, United States of America

Jedidiah Yueh