Invention Grant
- Patent Title: Re-aligning data replication configuration of primary and secondary data serving entities of a cross-site storage solution after a failover event
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Application No.: US17751410Application Date: 2022-05-23
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Publication No.: US11966307B2Publication Date: 2024-04-23
- Inventor: Murali Subramanian , Sohan Shetty , Akhil Kaushik
- Applicant: NetApp, Inc.
- Applicant Address: US CA San Jose
- Assignee: NetApp, Inc.
- Current Assignee: NetApp, Inc.
- Current Assignee Address: US CA San Jose
- Agency: Jaffery Watson Mendonsa & Hamilton LLP
- Main IPC: G06F11/20
- IPC: G06F11/20 ; H04L67/1097

Abstract:
Systems and methods for re-aligning data replication configuration of a cross-site storage solution after a failover are provided. According to one embodiment, after a failover, the new primary distributed storage system orchestrates flipping of the data replication configuration of a peered consistency group (CG) to reestablish zero RPO and zero RTO protections for the peered CG. The primary causes the secondary distributed storage system to perform an atomic database operation on its remote configuration database to (i) delete an existing source configuration that identifies the secondary as a source of data replication; and (ii) persist a new destination configuration identifying the secondary as a destination of data replication. Then, the primary performs an atomic database operation on its local configuration database to (i) delete an existing destination configuration identifying the primary as the destination; and (ii) persist a new source configuration identifying the distributed storage system as the source.
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