Full and differential replication

If a replication policy encounters an issue that cannot be fixed (for example, if the association was broken on the target cluster), you might need to reset the replication policy. If you reset a replication policy, SyncIQ performs either a full replication or a differential replication the next time the policy is run. You can specify the type of replication that SyncIQ performs.

During a full replication, SyncIQ transfers all data from the source cluster regardless of what data exists on the target cluster. A full replication consumes large amounts of network bandwidth and can take a very long time to complete. However, a full replication is less strenuous on CPU usage than a differential replication.

During a differential replication, SyncIQ first checks whether a file already exists on the target cluster and then transfers only data that does not already exist on the target cluster. A differential replication consumes less network bandwidth than a full replication; however, differential replications consume more CPU. Differential replication can be much faster than a full replication if there is an adequate amount of available CPU for the replication job to consume.