Synchronizing expirations for incremental backup data stored on a cloud-based object storage

US11809280B2 · kind B2 · utility

Assignee

• EMC IP Holding Company LLC · US

Inventors

• Shelesh Chopra · Kanchinakote, IN
• Sunil Yadav · Sherpur, IN
• Amarendra Behera · Bengaluru, IN
• Ravi Vijayakumar Chitloor · Kanchinakote, IN
• Tushar Dethe · Bengaluru, IN
• Himanshu Arora · Champaign, US
• Prabhat Kumar Dubey · Gubbi, IN
• Jigar Bhanushali · Valsad, IN
• Deependra Singh · Kanpur, IN

Key dates

• Filing date: Mar 5, 2021
• Grant date: Nov 7, 2023
• Expiry date: Mar 10, 2041

Classification

• Technology area (CPC G): Physics
• CPC primary: G06F2201/835
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

Described is a system for synchronizing expiration times for incremental backup data stored on a cloud-based object storage. More particularly, the system may provide a layer of intelligence when updating the expiration times associated with backup data to ensure that a full recovery of the client data to a point-in-time of any incremental backup may be performed. To provide such a capability, the system may maintain specialized metadata identifying expiration times for objects and a list of objects required to perform a full recovery to a point-in-time for each of the performed backups (e.g. full or incremental). The system may access this metadata to identify which objects stored by a previous backup are still referenced by a subsequent backup. Based on the identified objects, the system may synchronize object expiration times to ensure objects are not prematurely deleted from the object storage.