You might want more than one physical path for a SnapMirror relationship. SnapMirror supports up to two paths for a particular SnapMirror relationship.
When using multiple paths, you need to set up the configuration in one of the following ways.
- Set up static routes to ensure different routes are used for different IP connections.
- Use different subnets for the two connections.
The paths can be Ethernet, Fibre Channel, or a combination of Ethernet and Fibre Channel. The two paths can be used in one of these two modes.
- Multiplexing mode—SnapMirror uses both paths at the same time, essentially load balancing the transfers. If one path fails, the transfers occur on the remaining path. After the failed path is repaired, the transfers resume using both paths.
- Failover mode—SnapMirror uses the first specified path as the desired path and uses the second specified path only after the first path fails.
