USAGE OF OP LOG BASED FAST RECOVERY OF BIDIRECTIONAL SYNCHRONOUS REPLICATION IN A CROSS-SITE DISTRIBUTED STORAGE SYSTEM

Abstract: in one embodiment, a computer-implemented method comprises establishing bi-directional synchronous replication between one or more storage objects of a primary storage site and one or more storage objects of a secondary storage site with each storage site having read/write access while maintaining zero recovery point objective (rpo) and zero recovery time objective (rto), initiating a resynchronization process due to a loss of the bi-directional synchronous replication between the one or more storage objects and the one or more storage objects, and performing the resynchronization process based on using inflight tracking replay and reconciliation between a first op log metafile of the primary storage site and a second op log metafile of the secondary storage site.

Inventor(s): Vishal Thakur, Akhil Kaushik, Anoop Vijayan, Krishna Murthy Chandraiah Setty Narasingarayanapeta

CPC Classification: G06F3/065 ({Replication mechanisms})

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