Splitting a mirrored aggregate or traditional volume

Splitting a mirrored aggregate or traditional volume removes the relationship between its two plexes and creates two independent unmirrored aggregates or traditional volumes. After splitting, both the aggregates or traditional volumes come online.

Considerations

You might split a mirrored aggregate or traditional volume for one of the following reasons.

You want to stop mirroring an aggregate or traditional volume.
You want to move a mirrored aggregate or traditional volume to another location.
You want to modify the mirrored aggregate or traditional volume, and test the modification before applying it. You can apply and test the modifications and test on the split-off copy of the plex, then apply those changes to the untouched original plex.

Note: You do not need to stop applications that are running before splitting a mirrored aggregate or traditional volume.

To split a mirrored aggregate or traditional volume into two independent unmirrored aggregates or traditional volumes, complete the following step.

Note: Ensure that both plexes of the mirrored aggregate or traditional volume you are splitting are online and operational.

Step

Enter the following command:{ aggr | vol } split plexname { aggrname | volname }
plexname is the name of one of the plexes in the mirrored volume.
aggrname is the name of the new aggregate.

volname is the name of the new traditional volume.

Example
In this example, use the following command to split plex0 from mirrored aggregate aggr0 and name the new aggregate aggrNew.aggr split aggr0/plex0 aggrNew
After splitting, there are two unmirrored aggregates, aggr0 and aggrNew.

Example
In this example, use the following command to split plex0 from mirrored volume vol0 and name the new volume volNew.vol split vol0/plex0 volNew
After splitting, there are two unmirrored volumes, vol0 and volNew.

Before splitting, a mirrored aggregate or traditional volume has two plexes, plex0 and plex1. After splitting, the new unmirrored aggregate or traditional volume with the new name has one plex, plex0. The new unmirrored aggregate or traditional volume with the original name also has one plex, either plex0 or plex1.

The plex name for an unmirrored aggregate or traditional volume is unimportant because the aggregate or traditional volume has only one plex. If you remirror one of these unmirrored aggregates or volumes, the resulting plex names will always be plex0 and plex1.

Parent topic: SyncMirror management

Removing a plex from a mirrored aggregate

Removing a plex from a mirrored traditional volume

Changing the state of a plex

Related reference

Addition of a plex to an existing unmirrored aggregate or traditional volume