Only certain types of SnapMirror configurations support cascading.
The following table lists the two-hop cascade configurations that are supported for SnapMirror replication:
System A to system B | System B to system C |
---|---|
Synchronous SnapMirror | Asynchronous volume SnapMirror |
Asynchronous volume SnapMirror | Asynchronous volume SnapMirror |
Asynchronous volume SnapMirror | Qtree SnapMirror |
Qtree SnapMirror | Asynchronous volume SnapMirror |
When the first hop in the cascade is synchronous SnapMirror, the synchronous replication can be to one destination system only. Subsequent SnapMirror replications cascading from that destination system must be asynchronous and can be to multiple destination systems.