Axcient, Inc.

Vito Caputo

Eric Lalonde

Robert Petri

Systems, methods, and media file system virtualization. Exemplary methods may include rendering a sparse file system and creating a block map for the sparse file system. The block map may include a map record for each file record included in the sparse file system. A map record may include extents for blocks associated with a file record, the map record providing a mapping between allocated block sectors for a file record in the sparse file system and corresponding blocks associated with one or more data sources.

File system virtualization

Some of the methods provided herein may include periodically revising a mirror of the target computing system, according to a predetermined backup schedule, the mirror being stored on the virtual failover volume resident on an appliance that is operatively associated with the target computing system, by periodically comparing the mirror to a configuration of the target computing system to determine changed data blocks relative to the mirror, storing the changed data blocks as one or more differential files in the virtual failover volume, and incorporating the changed data blocks into the mirror. In some embodiments, the systems and methods may be utilized to resparsify the virtual failover volume.

Systems and methods for maintaining a virtual failover volume of a target computing system

Systems, methods, and media for synthesizing a view of a file system are provided herein. Methods may include receiving a request to obtain a view of at least a portion of a file system backup for a device, responsive to the request, mounting one or more backup files for the device on a backup node, generating a view of the at least a portion of a file system created from the one or more mounted backup files, the view being accessible via the intermediary node that is communicatively coupled with the backup node.

Systems, methods, and media for synthesizing views of file system backups

Systems and methods for restoring files and metadata records associated with files are provided herein. Some of the methods include identifying a version of the file, evaluating one or more reverse incremental delta increments, and restoring an arbitrary version of the file based on an arbitrary time reference by assembling the arbitrary version of the file based on the one or more reverse incremental delta increments.

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Wheaton, IL, United States of America

Vito Caputo