CROSS-REFERENCE TO RELATED APPLICATIONS

The present application claims the benefit of India Provisional Patent Application Serial No. 202141014977, which was filed on Mar. 31, 2021, by Ashish Kumar, et al. for TECHNIQUE FOR EFFICIENT DATA FAILOVER IN A MULTI-SITE DATA REPLICATION ENVIRONMENT, which is hereby incorporated by reference.

BACKGROUND

Technical Field

The present disclosure relates to data failover and, more specifically, to data failover using snapshots in a multi-site data replication environment.

Background Information

Data failover generally involves copying or replicating data among multiple datacenters to enable continued operation of data processing operations in a multi-site data replication environment, such as backup, content distribution and disaster recovery. As used herein, the multi-site data replication environment includes more than two datacenters, i.e., sites, which are often geographically separated by relatively large distances and connected over a communication network, e.g., a wide area network. For example, data at a local datacenter (primary site) may be replicated over the network to a plurality of remote datacenters located at geographically separated distances to ensure continued data processing operations in the event of a failure of the primary site.

Data may be replicated between the sites such that each update to the data at the primary site is copied to the remote sites. However, copying of each data update typically results in constant transfer of data over networks spanning geographical areas in the multi-site data replication environment, which may be costly and expensive, as the network is often poorly utilized leading to needless replication with commensurate bandwidth reduction and often a failure to meet (satisfy) recovery point objective thresholds.

