How data flows in continuous replication asynchronous mode

In asynchronous mode of continuous replication, CVR processes an incoming write by performing the following steps.

Figure: Data flow in continuous replication asynchronous mode

CVR receives a write on the primary host.
CVR writes it to the primary SRL.
On the primary host, CVR acknowledges to the application that the write is complete.
CVR sends the writes to the asynchronous secondary host in the order in which they were received on the primary host. At the same time, CVR writes to the primary data volumes.
When the primary host receives the network acknowledgment, it knows that the write has been received in the secondary CVR memory buffer.
CVR sends the writes to the data volumes on the secondary host and then sends a data acknowledgment to the primary host.
When the primary host receives the data acknowledgment, CVR marks the write as complete in the SRL.