Microsoft Technology Licensing, LLC

Yahui Sun

David Charles Oliver

Bradley Joseph Gussin

Dustin Alan Lee

Venkatesh Ashok Phadnavis

Trent Green

The system described herein provides the ability to efficiently back up and restore files within a service, such as a network-based file hosting service or a collaboration service. The system is configured to improve file restoration (may also be referred to as recovery) that occurs in response to an event (may also be referred to as an incident) that compromises a tenant device on which the files reside, thereby preventing access to the files or corrupting the files that are available to the tenant. An example of an event includes a ransomware attack. The described system utilizes a set of defined resources within a boundary to back up tenant files and restore the files. The resources include a metadata database and a blob store. The system combines mutable metadata with immutable content objects within the service to provide faster restoration than the conventional approach.

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Redmond, WA, United States of America

Yahui Sun