Intelligent re-tiering of incremental backup data stored on a cloud-based object storage

US11669403B2 · kind B2 · utility

Assignee

• EMC IP Holding Company LLC · US

Inventors

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

Key dates

• Filing date: Jan 15, 2021
• Grant date: Jun 6, 2023
• Expiry date: Jun 22, 2041

Classification

• Technology area (CPC G): Physics
• CPC primary: G06F11/1469
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

Described is a system for intelligent re-tiering of backup data stored on a cloud-based object storage. More specifically, the system may re-tier objects such that the system retains the ability to efficiently perform a full restore of backup data even when incremental backups are performed to a cloud-based object storage. To provide such a capability, the system may maintain a specialized metadata database that stores information indicating the backup time for each backup, and a list of objects required to perform a full restore to each of the backup times. Accordingly, when using a threshold time (e.g. expiry) to select object candidates for re-tiering, the system may leverage the metadata database to ensure that objects that may still need to be referenced are not unnecessarily moved to a lower storage tier.