FAQ

• What happens if the inter-region link drops during replication?

Replication between regions flows over IP4G managed redundant interconnects. In the event that all connectivity between regions is down, replication between regions will be disrupted. The source volumes will continue to function as normal, and the target volumes will remain as they were when the disruption occurred. When connectivity is restored, the replication will need to be manually restarted.

• How does SBR Handle split-brain scenarios if the communication is lost and then restored?

The target site will not automatically be writable when connectivity is lost, so no split-brain scenario will occur on its own, and replication will be stopped at both sites. A customer may choose to make the target site writable. When the original source site comes online, replication will be in a disabled state in both sites. When turning replication back on, the customer will be in control of which site is the source for the replication.

• Is there a performance impact on the primary volumes when replicating?

There is a small delay to I/O operations that can occur during the application of the change volumes. Customers will see an increase in max service times for brief intervals. The overall delay times are minimal. Following best practices for volume group sizing and configuration will help minimize the IO impacts of SBR.