The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 23, 2022
Filed:
Jun. 08, 2020
Sap SE, Walldorf, DE;
Vivek Kandiyanallur, San Francisco, CA (US);
Jia Feng, Pleasanton, CA (US);
Alexander Chernavin, San Carlos, CA (US);
Chitong Chung, Mountain View, CA (US);
Shyam Sunder Reddy Avula, San Ramon, CA (US);
Xin Guo, Fremont, CA (US);
Scott Hamilton, Aldie, VA (US);
Clay Jacobs, Hillsborough, CA (US);
Christopher de Castro, Farmington, MN (US);
Kaushik Ghosh, Santa Clara, CA (US);
SAP SE, Walldorf, DE;
Abstract
A distributed storage system includes a primary storage system and a secondary storage system. The secondary storage system stores the actual data and the primary storage system stores metadata for the actual data. The metadata references at the primary storage system may be deleted without deleting the corresponding data at the secondary storage system. Snapshots of the metadata at the primary storage system are sent to the secondary storage system. The secondary storage system can compare two metadata snapshots received from the primary storage in order to determine whether data stored at the secondary storage system has been deleted at the primary storage system for longer than a retention period. Such data may be deleted to free up storage space at the secondary storage server.