You can use Storage Manager to create and manage mirror relationships by
using the mirror policy.
Creating a mirror relationship from a destination SVM
You can use ONTAP Storage Manager to create a mirror relationship from the destination storage virtual machine (SVM) and to assign a policy and schedule to the mirror relationship. The mirror copy enables quick availability of data if the data on the source volume is corrupted or lost.
Deleting mirror relationships
You can delete a mirror relationship and permanently end the mirror relationship between the source and destination volumes. When a mirror relationship is deleted, the base Snapshot copy on the source volume is deleted.
Editing mirror relationships
You can use Storage Manager to edit a mirror relationship either by selecting an existing policy or schedule in the cluster, or by creating a policy or schedule.
Updating mirror relationships
You can initiate an unscheduled mirror update of the destination. You might have to perform a manual update to prevent data loss due to an upcoming power outage, scheduled maintenance, or data migration.
Quiescing mirror relationships
You can use Storage Manager to quiesce a mirror destination to stabilize it before creating a Snapshot copy. The quiesce operation enables active mirror transfers to finish and disables future transfers for the mirroring relationship.
Resuming mirror relationships
You can resume a quiesced mirror relationship. When you resume the relationship, normal data transfer to the mirror destination is resumed and all the mirror activities are restarted.
Breaking SnapMirror relationships
You must break a SnapMirror relationship if a SnapMirror source becomes unavailable and you want client applications to be able to access the data from the mirror destination. After the SnapMirror relationship is broken, the destination volume type changes from "data protection" (DP) to "read/write" (RW).
Resynchronizing mirror relationships
You can reestablish a mirror relationship that was broken earlier. You can perform a resynchronization operation to recover from a disaster that disabled the source volume.
Reverse resynchronizing mirror relationships
You can use Storage Manager to reestablish a mirror relationship that was previously broken. In a reverse resynchronization operation, you reverse the functions of the source volume and destination volume.
Aborting a mirror transfer
You can abort a volume replication operation before the data transfer is complete. You can abort a scheduled update, a manual update, or an initial data transfer.
Restoring a volume in a mirror relationship
For a version-independent mirror relationship, you can use Storage Manager to restore Snapshot copies to a source volume or to other volumes if the source data is corrupted and is no longer usable. You can replace the original data with the Snapshot copies in the destination volume.
How SnapMirror relationships work
You can create a data protection mirror relationship to a destination within a cluster to protect your data. For greater disaster protection, you can also create a mirror relationship to a destination in a different cluster in a different location.