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What Is Replication?

Replication maintains additional copies of data, applications, or workloads in secondary locations by transferring changes between source and destination environments on an ongoing basis. 

Unlike traditional backup processes that produce discrete recovery points, replication continuously or periodically synchronizes updates, so secondary copies remain closely aligned with production systems. Because replication propagates changes, it also propagates deletion, corruption, and encryption events, which is why it is not a substitute for backup. 

Organizations frequently use replication to support workloads with demanding availability requirements. Depending on operational objectives, replication may be implemented synchronously, where a write is acknowledged only after it has been committed at both locations, or asynchronously, where changes are transferred after the source write completes. 

Modern platforms support replication across physical servers, virtual machines, cloud workloads, storage systems, databases, SaaS applications, and disaster recovery environments. Replicated workloads may reside in secondary data centers, cloud infrastructure, or dedicated recovery sites. 

Replication is commonly deployed alongside backup technologies. While replication supports rapid workload availability and failover operations, backup systems provide historical recovery points, retention capabilities, and recovery options independent of replicated copies. 

Together, backup and replication contribute to disaster recovery planning, business continuity objectives, and broader data resilience strategies. 

Why Replication Matters

Replication helps maintain secondary copies of critical workloads, supporting availability requirements, and reducing the effects of infrastructure disruptions. 

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