In the synchronous mode, SnapMirror enables you to replicate data to the destination as soon as it is written to the source volume.
Synchronous SnapMirror is a feature of SnapMirror. You can use synchronous SnapMirror to replicate data between systems situated at remote sites, using either an IP or a Fibre Channel connection.
You can use synchronous SnapMirror only with volumes, not with qtrees. The source and destination volumes must be of the same type: traditional volumes or FlexVol volumes.