What SyncMirror is

SyncMirror is an optional feature of Data ONTAP. You can use SyncMirror to mirror aggregates embedded in traditional volumes and aggregates that contain FlexVol volumes.

SyncMirror creates aggregates or traditional volumes that consist of two copies of the same WAFL file system. SyncMirror simultaneously updates the two copies, known as plexes. Therefore, the copies are always identical.

For more information about aggregates and volumes, see the Data ONTAP Storage Management Guide.

• Advantages of using SyncMirror
  A SyncMirror relationship between two aggregates or traditional volumes provides a high level of data availability because the two plexes are physically separated on different shelves and the shelves are connected to the storage system with separate cables and adapters. Each plex has its own collection of spare disks.