About secondary logging enabled asynchronous mode

Secondary logging is an advanced feature that improves replication performance throughput. This feature uses the Secondary SRL to stage the data before writing to the data volume. The data volume write requires write-order fidelity, which slows the replication throughput. Staging the data to the Secondary SRL allows an immediate acknowledgment of the data write, and allows the Primary to push more data. The Secondary applies the data to the volume in a parallel manner to maintain write-order fidelity. The data acknowledgment is performed immediately after writing on the SRL.

The requirements for automatically enabling support for Secondary logging are as follows:

If any of these requirements are not met, the Secondary logging feature is automatically disabled, and traditional replication is used, which may provide lesser replication throughput.