- ONTAP 9.1 - 9.5P3
- SnapMirror source node has fan-out SnapMirror relationships
- A SnapMirror source node has one or more slower fan-out SnapMirror relationships as well as other, faster fan-out SnapMirror Relationships from the same source node.
- In some cases, one or more of the slower SnapMirror relationship(s) throttle the throughput rate achieved by the faster SnapMirror relationships.
- When the slower SnapMirrors are aborted or otherwise idle, the faster SnapMirror relationships go back to expected speeds.
- This KB only applies when fast SnapMirrors are throttled by slower SnapMirrors transferring from the same source node at the same time.
- In these cases, the fast SnapMirrors run at expected speeds when the slower SnapMirrors are aborted or otherwise not transferring.
- As an example, consider a SnapMirror source node has an InterCluster SnapMirror relationship going over a WAN link achieving at-best a throughput of 15MB/s.
- This same SnapMirror source node also has an intra-cluster SnapMirror relationship replicating over a 10Gbps cluster interconnect achieving a throughput of 100MB/s.
- When the slower InterCluster SnapMirror is transferring, the faster intra-cluster SnapMirror slows to ~15-20MB/s.
- When the slower InterCluster SnapMirror is aborted, the faster intra-cluster SnapMirror picks back up to the expected 100MB/s throughput.